1
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You N, Deng SH, He H, Hu J. Ferromanganese oxide-functionalized TiO 2 for rapid catalytic ozonation of PPCPs through a coordinated oxidation process with adjusted composition and strengthened generation of reactive oxygen species. WATER RESEARCH 2024; 258:121813. [PMID: 38820991 DOI: 10.1016/j.watres.2024.121813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 05/16/2024] [Accepted: 05/19/2024] [Indexed: 06/02/2024]
Abstract
Ferromanganese oxide (MFOx) was first utilized to functionalize TiO2 and an MFOx@TiO2 catalyst was developed for catalytic ozonation for rapid attack of pharmaceutical and personal care products (PPCPs) with adjusted reactive oxygen species (ROSs) composition and strengthened ROSs generation. Unlike Al2O3, which strongly relied on adsorption and was significantly influenced by MFOx loading, synergistic catalytical effects of MFOx and TiO2 were observed, and optimal MFOx doping of 2 wt% and MFOx@TiO2 dosage of 500 ppm were obtained for catalyzing ozonation. In ibuprofen (IBP) degradation, MFOx@TiO2-catalyzed ozonation (MFOx@TiO2/O3) obtained 2.0-, 4.7- and 6.9-folds the kobs of TiO2/O3, MFOx/O3 and bare ozonation (B/O3). Stronger O3 decomposition was observed by MFOx@TiO2 over bare TiO2 with the participation of redox pairs Fe(II)/Fe(III) and Mn(II)/Mn(III)/Mn(IV) and increased surface oxygen vacancies (SOVs) from 9.8 % to 33.7 % was detected. The results revealed that Fe(II), Mn(II) and Mn(III) with low valance accelerated Ti(III) generation from Ti(VI), obtaining an unprecedented high Ti(III) composition occupying 35.3 % of the total Ti atoms. Ti(III) catalyzed the direct reduction of SOVs-O2 to •O2-, and it accelerated the formation of Ti(VI)-OH and Ti(VI)-O which catalyzed O3 decomposition into •O2-. •O2- was found to primarily initiate IBP degradation with nucleophilic addition and dominated over 66 % IBP removal. The enhanced •O2- generation further strengthened •OH and 1O2 production. MFOx@TiO2/O3 obtained 17 %, 21 % and 30 % higher TOC removal over TiO2/O3, MFOx/O3 and B/O3, respectively. Acute toxicity tests confirmed the effective toxicity control of organics by MFOx@TiO2/O3 process (inhibition rate: 10.9 %). Degradation test of atenolol and sulfamethoxazole confirmed the catalytic effects of MFOx@TiO2. MFOx@TiO2 performed strong resistance to water matrix in application test and showed good stability and reusability. The study proposed an effective catalyst for strengthening the ozonation process on PPCPs degradation and provided an in-depth understanding of the mechanisms and characteristics of the MFOx@TiO2 catalyst and MFOx@TiO2/O3 process.
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Affiliation(s)
- Na You
- Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore
| | - Shi-Hai Deng
- School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Haiyang He
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Jiangyong Hu
- Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore.
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2
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Akaike K, Shimoi Y, Miura T, Morita H, Akiyama H, Horiuchi S. Disentangling Origins of Adhesive Bonding at Interfaces between Epoxy/Amine Adhesive and Aluminum. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10625-10637. [PMID: 37467444 DOI: 10.1021/acs.langmuir.3c01218] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Joining metals by adhesive bonding is essential in widespread fields such as mobility, dentistry, and electronics. Although adhesive technology has grown since the 1920s, the roles of interfacial phenomena in adhesive bonding are still elusive, which hampers the on-demand selection of surface treatment and adhesive types. In the present study, we clarified how chemical interactions and mechanical interlocking governed adhesive bonding by evaluating adhesion properties at the interfaces between epoxy/amine adhesive and two kinds of Al adherends: a flat aluminum hydroxide (AlxOyHz) and technical Al plate with roughness. Spectroscopic and microscopical data demonstrate that the protonation of the amino groups in an amine hardener converts Al(OH)3 on the AlxOyHz surface to AlO(OH). The interfacial protonation results in an interfacial dipole layer with positive charges on the adhesive side, whose electrostatic interaction increases the interfacial fracture energy. The double cantilever beam tests for the flat AlxOyHz and technical Al substrates clarify that the mechanical interlocking originating from the surface roughness further increases the fracture energy. This study disentangles the roles of the chemical interactions and mechanical interlocking occurring at the epoxy adhesive/Al interface in the adhesion mechanism.
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Affiliation(s)
- Kouki Akaike
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Yukihiro Shimoi
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology, Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Toshiaki Miura
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology, Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Hiroshi Morita
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology, Central 2, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Haruhisa Akiyama
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Shin Horiuchi
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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3
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Zhou J, Yang P, Kots PA, Cohen M, Chen Y, Quinn CM, de Mello MD, Anibal Boscoboinik J, Shaw WJ, Caratzoulas S, Zheng W, Vlachos DG. Tuning the reactivity of carbon surfaces with oxygen-containing functional groups. Nat Commun 2023; 14:2293. [PMID: 37085515 PMCID: PMC10121666 DOI: 10.1038/s41467-023-37962-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 04/07/2023] [Indexed: 04/23/2023] Open
Abstract
Oxygen-containing carbons are promising supports and metal-free catalysts for many reactions. However, distinguishing the role of various oxygen functional groups and quantifying and tuning each functionality is still difficult. Here we investigate the role of Brønsted acidic oxygen-containing functional groups by synthesizing a diverse library of materials. By combining acid-catalyzed elimination probe chemistry, comprehensive surface characterizations, 15N isotopically labeled acetonitrile adsorption coupled with magic-angle spinning nuclear magnetic resonance, machine learning, and density-functional theory calculations, we demonstrate that phenolic is the main acid site in gas-phase chemistries and unexpectedly carboxylic groups are much less acidic than phenolic groups in the graphitized mesoporous carbon due to electron density delocalization induced by the aromatic rings of graphitic carbon. The methodology can identify acidic sites in oxygenated carbon materials in solid acid catalyst-driven chemistry.
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Affiliation(s)
- Jiahua Zhou
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
- Catalysis Center for Energy Innovation, University of Delaware, Newark, DE, 19716, USA
| | - Piaoping Yang
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
- Catalysis Center for Energy Innovation, University of Delaware, Newark, DE, 19716, USA
| | - Pavel A Kots
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Maximilian Cohen
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA
| | - Ying Chen
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Caitlin M Quinn
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Matheus Dorneles de Mello
- Catalysis Center for Energy Innovation, University of Delaware, Newark, DE, 19716, USA
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - J Anibal Boscoboinik
- Catalysis Center for Energy Innovation, University of Delaware, Newark, DE, 19716, USA
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Wendy J Shaw
- Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Stavros Caratzoulas
- Catalysis Center for Energy Innovation, University of Delaware, Newark, DE, 19716, USA
| | - Weiqing Zheng
- Catalysis Center for Energy Innovation, University of Delaware, Newark, DE, 19716, USA.
| | - Dionisios G Vlachos
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, 19716, USA.
- Catalysis Center for Energy Innovation, University of Delaware, Newark, DE, 19716, USA.
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4
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Singh P, Gogoi A, Aien QU, Dixit M. Assessing the Effect of Dopants on the C-H Activation Activity of γ-Al 2 O 3 using First-Principles Calculations. Chemphyschem 2023; 24:e202200670. [PMID: 36324289 DOI: 10.1002/cphc.202200670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Revised: 10/21/2022] [Indexed: 11/06/2022]
Abstract
In recent years, the high availability of methane in the shale gas reserves has raised significant interest in its conversion to high-value chemicals but this process is still not commercially viable. Metal oxides, due to their surface heterogeneity and the presence of Lewis acidic and basic site pairs are known to facilitate the activation of C-H bonds of methane. In this work, we investigate the C-H bond activation of methane on pristine and doped γ-Al2 O3 clusters using density functional theory (DFT) calculations. Our results demonstrate that the polar pathway is energetically preferred over the radical pathway on these systems. We found that the metal dopants (boron and gallium) not only alter the catalytic activity of dopant sites but this effect is more pronounced on some of the adjacent sites (non-local). Among the selected dopants, gallium greatly improves the catalytic activity on most of the site pairs (including most active and least active) of pristine γ-Al2 O3 . Additionally, we identified a correlation between H2 binding energies and the C-H activation free energies on Ga-doped γ-Al2 O3 .
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Affiliation(s)
- Priti Singh
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, India
| | - Amrita Gogoi
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata-Mohanpur, Nadia, 741 246, West Bengal, India
| | - Qurat Ul Aien
- Department of Chemistry, Lovely Professional University, Phagwara, 144001, Paunjab, India
| | - Mudit Dixit
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Hyderabad, 500078, India
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5
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Zhu H, Jackson TA, Subramaniam B. Facile Ozonation of Light Alkanes to Oxygenates with High Atom Economy in Tunable Condensed Phase at Ambient Temperature. JACS AU 2023; 3:498-507. [PMID: 36873707 PMCID: PMC9975831 DOI: 10.1021/jacsau.2c00631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/07/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
We have demonstrated the oxidation of mixed alkanes (propane, n-butane, and isobutane) by ozone in a condensed phase at ambient temperature and mild pressures (up to 1.3 MPa). Oxygenated products such as alcohols and ketones are formed with a combined molar selectivity of >90%. The ozone and dioxygen partial pressures are controlled such that the gas phase is always outside the flammability envelope. Because the alkane-ozone reaction predominantly occurs in the condensed phase, we are able to harness the unique tunability of ozone concentrations in hydrocarbon-rich liquid phases for facile activation of the light alkanes while also avoiding over-oxidation of the products. Further, adding isobutane and water to the mixed alkane feed significantly enhances ozone utilization and the oxygenate yields. The ability to tune the composition of the condensed media by incorporating liquid additives to direct selectivity is a key to achieving high carbon atom economy, which cannot be achieved in gas-phase ozonations. Even in the liquid phase, without added isobutane and water, combustion products dominate during neat propane ozonation, with CO2 selectivity being >60%. In contrast, ozonation of a propane+isobutane+water mixture suppresses CO2 formation to 15% and nearly doubles the yield of isopropanol. A kinetic model based on the formation of a hydrotrioxide intermediate can adequately explain the yields of the observed isobutane ozonation products. Estimated rate constants for the formation of oxygenates suggest that the demonstrated concept has promise for facile and atom-economic conversion of natural gas liquids to valuable oxygenates and broader applications associated with C-H functionalization.
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Affiliation(s)
- Hongda Zhu
- Center
for Environmentally Beneficial Catalysis, University of Kansas, 1501 Wakarusa Dr., Lawrence, Kansas 66047, United States
| | - Timothy A. Jackson
- Center
for Environmentally Beneficial Catalysis, University of Kansas, 1501 Wakarusa Dr., Lawrence, Kansas 66047, United States
- Department
of Chemistry, University of Kansas, 1567 Irving Hill Rd, Lawrence, Kansas 66045, United States
| | - Bala Subramaniam
- Center
for Environmentally Beneficial Catalysis, University of Kansas, 1501 Wakarusa Dr., Lawrence, Kansas 66047, United States
- Department
of Chemical and Petroleum Engineering, University
of Kansas, 1530 W. 15th, Lawrence, Kansas 66045, United States
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6
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Conesa J, Morales M, García-Bosch N, Ramos IR, Guerrero-Ruiz A. GRAPHITE SUPPORTED HETEROPOLYACID AS A REGENERABLE CATALYST IN THE DEHYDRATION OF 1-BUTANOL TO BUTENES. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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7
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Strange NA, Adak S, Stroupe Z, Crain CA, Novak EC, Daemen LL, Larese JZ. A multi-faceted structural, thermodynamic, and spectroscopic approach for investigating ethanol dehydration over transition phase aluminas. Phys Chem Chem Phys 2023; 25:590-603. [DOI: 10.1039/d2cp04016f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The surface-catalyzed dehydration of ethanol over transition phase aluminas was studied using a multi-faceted structural and thermodynamic characterization approach, which enabled a detailed examination of the reaction mechanism using INS.
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Affiliation(s)
| | - Sourav Adak
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
- Lovely Professional University, Phagwara, Punjab 144001, India
| | - Zachary Stroupe
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
| | | | - Eric C. Novak
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Luke L. Daemen
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - J. Z. Larese
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
- Joint Institute for Advanced Materials, Knoxville, TN 37920, USA
- Shull-Wollan Center, a Joint Institute for Neutron Sciences, Oak Ridge, TN 37831, USA
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8
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Yang D, Chheda S, Lyu Y, Li Z, Xiao Y, Siepmann JI, Gagliardi L, Gates BC. Mechanism of Methanol Dehydration Catalyzed by Al 8O 12 Nodes Assisted by Linker Amine Groups of the Metal–Organic Framework CAU-1. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dong Yang
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 21000, China
| | - Saumil Chheda
- Department of Chemical Engineering and Materials Science, Department of Chemistry, and Chemical Theory Center, University of Minnesota─Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Yinghui Lyu
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 21000, China
| | - Ziang Li
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 21000, China
| | - Yue Xiao
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 21000, China
| | - J. Ilja Siepmann
- Department of Chemical Engineering and Materials Science, Department of Chemistry, and Chemical Theory Center, University of Minnesota─Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Laura Gagliardi
- Department of Chemistry, Pritzker School of Molecular Engineering, James Franck Institute, and Chicago Center for Theoretical Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Bruce C. Gates
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
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9
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Sulfate ionic liquids promoted FeCl3-catalyzed dehydration of propargyl alcohols. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Mastroianni L, Vajglová Z, Eränen K, Peurla M, Di Serio M, Yu. Murzin D, Russo V, Salmi T. Microreactor technology in experimental and modelling study of alcohol oxidation on nanogold. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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A critical assessment of the roles of water molecules and solvated ions in acid-base-catalyzed reactions at solid-water interfaces. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)64032-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Onn TM, Gathmann SR, Wang Y, Patel R, Guo S, Chen H, Soeherman JK, Christopher P, Rojas G, Mkhoyan KA, Neurock M, Abdelrahman OA, Frisbie CD, Dauenhauer PJ. Alumina Graphene Catalytic Condenser for Programmable Solid Acids. JACS AU 2022; 2:1123-1133. [PMID: 35647588 PMCID: PMC9131479 DOI: 10.1021/jacsau.2c00114] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/27/2022] [Accepted: 04/01/2022] [Indexed: 06/15/2023]
Abstract
Precise control of electron density at catalyst active sites enables regulation of surface chemistry for the optimal rate and selectivity to products. Here, an ultrathin catalytic film of amorphous alumina (4 nm) was integrated into a catalytic condenser device that enabled tunable electron depletion from the alumina active layer and correspondingly stronger Lewis acidity. The catalytic condenser had the following structure: amorphous alumina/graphene/HfO2 dielectric (70 nm)/p-type Si. Application of positive voltages up to +3 V between graphene and the p-type Si resulted in electrons flowing out of the alumina; positive charge accumulated in the catalyst. Temperature-programmed surface reaction of thermocatalytic isopropanol (IPA) dehydration to propene on the charged alumina surface revealed a shift in the propene formation peak temperature of up to ΔT peak∼50 °C relative to the uncharged film, consistent with a 16 kJ mol-1 (0.17 eV) reduction in the apparent activation energy. Electrical characterization of the thin amorphous alumina film by ultraviolet photoelectron spectroscopy and scanning tunneling microscopy indicates that the film is a defective semiconductor with an appreciable density of in-gap electronic states. Density functional theory calculations of IPA binding on the pentacoordinate aluminum active sites indicate significant binding energy changes (ΔBE) up to 60 kJ mol-1 (0.62 eV) for 0.125 e- depletion per active site, supporting the experimental findings. Overall, the results indicate that continuous and fast electronic control of thermocatalysis can be achieved with the catalytic condenser device.
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Affiliation(s)
- Tzia Ming Onn
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Sallye R. Gathmann
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Yuxin Wang
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Roshan Patel
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Silu Guo
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Han Chen
- Department
of Chemical Engineering, University of Massachusetts
Amherst, 686 N. Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Jimmy K. Soeherman
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Phillip Christopher
- Department
of Chemical Engineering, University of California,
Santa Barbara, 3335 Engineering
II, Santa Barbara, California 93106, United States
| | - Geoffrey Rojas
- Characterization
Facility, University of Minnesota, 100 Union Street SE, Minneapolis, Minnesota 55455, United States
| | - K. Andre Mkhoyan
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Matthew Neurock
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Omar A. Abdelrahman
- Department
of Chemical Engineering, University of Massachusetts
Amherst, 686 N. Pleasant Street, Amherst, Massachusetts 01003, United States
| | - C. Daniel Frisbie
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Paul J. Dauenhauer
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
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13
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Abdelgaid M, Mpourmpakis G. Structure–Activity Relationships in Lewis Acid–Base Heterogeneous Catalysis. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mona Abdelgaid
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Giannis Mpourmpakis
- Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
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14
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15
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Dao PDQ, Park ST, Sohn HS, Yoon NS, Cho CS. Construction of trinuclear N-fused hybrid scaffolds by coupling and cyclization of 2-bromoaryl- and 2-bromovinylimidazoles with ureas under recyclable Cu/C–Al2O3 catalysis. Tetrahedron 2022. [DOI: 10.1016/j.tet.2021.132613] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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16
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Deng L, Han S, Zhou D, Li Y, Shen W. Morphology dependent effect of γ-Al2O3 for ethanol dehydration: nanorods and nanosheets. CrystEngComm 2022. [DOI: 10.1039/d1ce01316e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
γ-Al2O3 nanorods gave the improved selectivity of C2H4 in ethanol dehydration due to the selective exposure of {100} facets.
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Affiliation(s)
- Li Deng
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Shaobo Han
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Di Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yong Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Wenjie Shen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
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17
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Morteo‐Flores F, Roldan A. The Effect of Pristine and Hydroxylated Oxide Surfaces on the Guaiacol HDO Process: A DFT Study. Chemphyschem 2021; 23:e202100583. [PMID: 34495572 PMCID: PMC9292963 DOI: 10.1002/cphc.202100583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/07/2021] [Indexed: 11/07/2022]
Abstract
The acid‐base character of oxide supports is crucial for catalytic reactions. In this work, the acid‐base properties of five oxide surfaces common in heterogeneous catalysis were investigated and related to their interaction with monolignol compounds derived from lignin. We have used density functional theory simulations also to understand the role of the surfaces’ hydroxylation state. The results show that moderate hydroxyl coverage on the amphoteric γ‐Al2O3 (110) slightly strengthens the oxy‐compounds’ adsorption due to an increase in Lewis acidity. Similarly, low hydroxyl coverage on the reducible TiO2 (101) enlarges its adsorption capacity by up to 42 % compared with its clean surface. The higher affinity is attributed to the more favourable interaction between the surface‐OH groups and the aromatic rings. Overall, the results indicate that hydroxyl coverage enhances the amphoteric and reducible adsorption capacity towards aromatic species.
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Affiliation(s)
- Fabian Morteo‐Flores
- Cardiff Catalysis InstituteSchool of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
| | - Alberto Roldan
- Cardiff Catalysis InstituteSchool of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
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18
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Zeng L, Cao Y, Li Z, Dai Y, Wang Y, An B, Zhang J, Li H, Zhou Y, Lin W, Wang C. Multiple Cuprous Centers Supported on a Titanium-Based Metal–Organic Framework Catalyze CO 2 Hydrogenation to Ethylene. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01939] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Lingzhen Zeng
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
| | - Yonghua Cao
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
| | - Zhe Li
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
| | - Yiheng Dai
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
| | - Yongke Wang
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
| | - Bing An
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
| | - Jingzheng Zhang
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
| | - Han Li
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
| | - Yang Zhou
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
| | - Wenbin Lin
- Department of Chemistry, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States
| | - Cheng Wang
- State Key Laboratory of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering, iCHEM, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) Xiamen University, Xiamen 361005, People’s Republic of China
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19
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Two-Dimensional Perovskite Crystals Formed by Atomic Layer Deposition of CaTiO 3 on γ-Al 2O 3. NANOMATERIALS 2021; 11:nano11092207. [PMID: 34578523 PMCID: PMC8469333 DOI: 10.3390/nano11092207] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 11/17/2022]
Abstract
CaTiO3 films with an average thickness of 0.5 nm were deposited onto γ-Al2O3 by Atomic Layer Deposition (ALD) and then characterized by a range of techniques, including X-ray Diffraction (XRD) and High-Resolution, Transmission Electron Microscopy (HRTEM). The results demonstrate that the films form two-dimensional crystallites over the entire surface. Lattice fringes from HRTEM indicate that the crystallites range in size from 5 to 20 nm and are oriented in various directions. Films of the same thickness on SiO2 remained amorphous, indicating that the support played a role in forming the crystallites.
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20
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Lee HJ, Choi IH, Kim SW, Hwang KR. Selective Production of Bio-Based Linear Alpha-Olefin from Wasted Fatty Alcohol on Al 2O 3 for Bio-Based Chemicals. Polymers (Basel) 2021; 13:2850. [PMID: 34502889 PMCID: PMC8433876 DOI: 10.3390/polym13172850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/20/2021] [Accepted: 08/23/2021] [Indexed: 11/17/2022] Open
Abstract
The catalytic dehydration of a bio-based fatty alcohol was performed using Al2O3 prepared by solvothermal synthesis for selective production of long-chain linear-alpha-olefins (LAO). The effect of the synthesis temperature of alumina precursors on the dehydration of 1-octadecanol (C18H38O) was examined based on the textural properties and Lewis acid-base properties of the catalysts. Amorphous alumina synthesized at 325 °C showed the highest surface area (233.07 m2/g) and total pore volume (1.237 cm3/g) among the catalysts and the best dehydration results: 93% conversion, 62% selectivity of 1-octadecene (C18H36), and 89% LAO purity. This was attributed to the increased Al/O ratio and atomic concentration of surface O in alumina, which were important factors in the catalytic dehydration of 1-octadecanol through the synergistic catalysis of acid-base pairs. The produced bio-based LAO can be key intermediates for synthesis of oxo alcohols and poly-alpha-olefins, as alternatives to petroleum-based LAO to achieve carbon neutrality in chemical industry.
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Affiliation(s)
- Hye-Jin Lee
- Energy Resource Upcycling Research Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea; (H.-J.L.); (I.-H.C.)
- Department of Chemical and Biological Engineering, Korea University, Seoul 136701, Korea;
| | - Il-Ho Choi
- Energy Resource Upcycling Research Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea; (H.-J.L.); (I.-H.C.)
| | - Seung-Wook Kim
- Department of Chemical and Biological Engineering, Korea University, Seoul 136701, Korea;
| | - Kyung-Ran Hwang
- Energy Resource Upcycling Research Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea; (H.-J.L.); (I.-H.C.)
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21
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Xiao Y, Han L, Zhang L, Gates BC, Yang D. Pair Sites on Nodes of Metal-Organic Framework hcp UiO-66 Catalyze tert-Butyl Alcohol Dehydration. J Phys Chem Lett 2021; 12:6085-6089. [PMID: 34170689 DOI: 10.1021/acs.jpclett.1c01574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
On metal oxide cluster nodes of metal-organic frameworks (MOFs), sites not bonded to linkers (e.g., defects and structural vacancies) control reactivity and catalysis. Attention has been focused on isolated, individual sites, but pair sites have been largely overlooked. We now show that the MOF hcp UiO-66, which incorporates dimeric Zr6O8 nodes bridged by μ2-OH groups, is an excellent platform for identifying and controlling adjacent sites consisting of OH groups and Zr4+ sites, which catalyze tert-butyl alcohol dehydration much more rapidly than isolated single sites.
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Affiliation(s)
- Yue Xiao
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 21000, China
| | - Lu Han
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 21000, China
| | - Lixiong Zhang
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 21000, China
| | - Bruce C Gates
- Department of Chemical Engineering, University of California, Davis, California 95616, United States
| | - Dong Yang
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 21000, China
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22
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Elucidating the origin of selective dehydrogenation of propane on γ-alumina under H2S treatment and co-feed. J Catal 2021. [DOI: 10.1016/j.jcat.2020.12.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Najmi S, So J, Stavitski E, McDermott WP, Lyu Y, Burt SP, Hermans I, Sholl DS, Sievers C. In‐situ
IR Spectroscopy Study of Reactions of C3 Oxygenates on Heteroatom (Sn, Mo, and W) doped BEA Zeolites and the Effect of Co‐adsorbed Water. ChemCatChem 2021. [DOI: 10.1002/cctc.202001424] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sean Najmi
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
| | - Jungseob So
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
| | - Eli Stavitski
- National Synchrotron Light Source II Brookhaven National Laboratory Upton NY 11973 USA
| | - William P. McDermott
- Department of Chemistry & Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison WI 53706 USA
| | - Yimeng Lyu
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
| | - Sam P. Burt
- Department of Chemistry & Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison WI 53706 USA
| | - Ive Hermans
- Department of Chemistry & Department of Chemical and Biological Engineering University of Wisconsin-Madison Madison WI 53706 USA
| | - David S. Sholl
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
| | - Carsten Sievers
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
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24
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Larabi C, Norsic S, Khrouz L, Boyron O, Szeto KC, Lucas C, Taoufik M, De Mallmann A. Oxide-Supported Titanium Catalysts: Structure–Activity Relationship in Heterogeneous Catalysis, with the Choice of Support as a Key Step. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cherif Larabi
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Sébastien Norsic
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Lhoussain Khrouz
- Université de Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, 46 Allée d’Italie, 69342 Lyon, France
| | - Olivier Boyron
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Kai Chung Szeto
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Christine Lucas
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Mostafa Taoufik
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
| | - Aimery De Mallmann
- Université de Lyon, ESCPE Lyon, UMR 5265 CNRS, Université Claude Bernard Lyon 1, Laboratoire C2P2, 43 bd du 11 Novembre 1918, F-69626 Villeurbanne Cedex, France
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25
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Duan T, Xiao Y, Zhang G, Hou B, Jia L, Li D. Effect of crystalline phases and acid sites on the dehydration of 1-octadecanol to 1-octadecene over TiO2–ZrO2 mixed oxides. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-01848-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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27
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Rates of levoglucosanol hydrogenolysis over Brønsted and Lewis acid sites on platinum silica-alumina catalysts synthesized by atomic layer deposition. J Catal 2020. [DOI: 10.1016/j.jcat.2020.05.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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Sustainable short-chain olefin production through simultaneous dehydration of mixtures of 1-butanol and ethanol over HZSM-5 and γ-Al2O3. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.05.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Fujino A, Ito SI, Goto T, Ishibiki R, Osuga R, Kondo JN, Fujitani T, Nakamura J, Hosono H, Kondo T. Ethanol-ethylene conversion mechanism on hydrogen boride sheets probed by in situ infrared absorption spectroscopy. Phys Chem Chem Phys 2020; 23:7724-7734. [PMID: 32870215 DOI: 10.1039/d0cp03079a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Two-dimensional hydrogen boride (HB) sheets were recently demonstrated to act as a solid acid catalyst in their hydrogen-deficient state. However, both the active sites and the mechanism of the catalytic process require further elucidation. In this study, we analyzed the conversion of ethanol adsorbed on HB sheets under vacuum during heating using in situ Fourier transform infrared (FT-IR) absorption spectroscopy with isotope labelling. Up to 450 K, the FT-IR peak associated with the OH group of the adsorbed ethanol molecule disappeared from the spectrum, which was attributed to a dehydration reaction with a hydrogen atom from the HB sheet, resulting in the formation of an ethyl species. At temperatures above 440 K, the number of BD bonds markedly increased in CD3CH2OH, compared to CH3CD2OH; the temperature dependence of the formation rate of BD bonds was similar to that of the dehydration reaction rate of ethanol on HB sheets under steady-state conditions. The rate-determining step of the dehydration of ethanol on HB was thus ascribed to the dehydrogenation of the methyl group of the ethyl species on the HB sheets, followed by the immediate desorption of ethylene. These results show that the catalytic ethanol dehydration process on HB involves the hydrogen atoms of the HB sheets. The obtained mechanistic insights are expected to promote the practical application of HB sheets as catalysts.
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Affiliation(s)
- Asahi Fujino
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8573, Japan
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30
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Renewable Butene Production through Dehydration Reactions over Nano-HZSM-5/γ-Al2O3 Hybrid Catalysts. Catalysts 2020. [DOI: 10.3390/catal10080879] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The development of new, improved zeolitic materials is of prime importance to progress heterogeneous catalysis and adsorption technologies. The zeolite HZSM-5 and metal oxide γ-Al2O3 are key materials for processing bio-alcohols, but both have some limitations, i.e., HZSM-5 has a high activity but low catalytic stability, and vice versa for γ-Al2O3. To combine their advantages and suppress their disadvantages, this study reports the synthesis, characterization, and catalytic results of a hybrid nano-HZSM-5/γ-Al2O3 catalyst for the dehydration of n-butanol to butenes. The hybrid catalyst is prepared by the in-situ hydrothermal synthesis of nano-HZSM-5 onto γ-Al2O3. This catalyst combines mesoporosity, related to the γ-Al2O3 support, and microporosity due to the nano-HZSM-5 crystals dispersed on the γ-Al2O3. HZSM-5 and γ-Al2O3 being in one hybrid catalyst leads to a different acid strength distribution and outperforms both single materials as it shows increased activity (compared to γ-Al2O3) and a high selectivity to olefins, even at low conversion and a higher stability (compared to HZSM-5). The hybrid catalyst also outperforms a physical mixture of nano-HZSM-5 and γ-Al2O3, indicating a truly synergistic effect in the hybrid catalyst.
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31
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Qi J, Finzel J, Robatjazi H, Xu M, Hoffman AS, Bare SR, Pan X, Christopher P. Selective Methanol Carbonylation to Acetic Acid on Heterogeneous Atomically Dispersed ReO4/SiO2 Catalysts. J Am Chem Soc 2020; 142:14178-14189. [DOI: 10.1021/jacs.0c05026] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Ji Qi
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93117, United States
| | - Jordan Finzel
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93117, United States
| | - Hossein Robatjazi
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93117, United States
| | | | - Adam S. Hoffman
- Stanford Synchrotron Radiation Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Simon R. Bare
- Stanford Synchrotron Radiation Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | | | - Phillip Christopher
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93117, United States
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32
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Wu Z, Zhang J, Su Z, Wang P, Tan T, Xiao FS. Low-Temperature Dehydration of Ethanol to Ethylene over Cu–Zeolite Catalysts Synthesized from Cu–Tetraethylenepentamine. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01253] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Zhiyi Wu
- Beijing Advanced Innovation Center for Soft Matter, Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jian Zhang
- Beijing Advanced Innovation Center for Soft Matter, Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zerui Su
- Beijing Advanced Innovation Center for Soft Matter, Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Pingzhou Wang
- Beijing Advanced Innovation Center for Soft Matter, Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Tianwei Tan
- Beijing Advanced Innovation Center for Soft Matter, Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Feng-Shou Xiao
- Beijing Advanced Innovation Center for Soft Matter, Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
- Key Laboratory of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, 310028, China
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33
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Robatjazi H, Lou M, Clark BD, Jacobson CR, Swearer DF, Nordlander P, Halas NJ. Site-Selective Nanoreactor Deposition on Photocatalytic Al Nanocubes. NANO LETTERS 2020; 20:4550-4557. [PMID: 32379463 DOI: 10.1021/acs.nanolett.0c01405] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Photoactivation of catalytic materials through plasmon-coupled energy transfer has created new possibilities for expanding the scope of light-driven heterogeneous catalysis. Here we present a nanoengineered plasmonic photocatalyst consisting of catalytic Pd islands preferentially grown on vertices of Al nanocubes. The regioselective Pd deposition on Al nanocubes does not rely on complex surface ligands, in contrast to site-specific transition-metal deposition on gold nanoparticles. We show that the strong local field enhancement on the sharp nanocube vertices provides a mechanism for efficient coupling of the plasmonic Al antenna to adjacent Pd nanoparticles. A substantial increase in photocatalytic H2 dissociation on Pd-bound Al nanocubes relative to pristine Al nanocubes can be observed, incentivizing further engineering of heterometallic antenna-reactor photocatalysts. Controlled growth of catalytic materials on plasmonic hot spots can result in more efficient use of the localized surface plasmon energy for photocatalysis, while minimizing the amount and cost of precious transition-metal catalysts.
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Affiliation(s)
- Hossein Robatjazi
- Department of Chemical Engineering, University of California, Santa Barbara, Santa Barbara, California 93106, United States
| | | | | | | | - Dayne F Swearer
- Department of Material Science and Engineering, Stanford University, Stanford, California 94305, United States
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34
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Xia H. Monomolecular Dehydration of Ethanol into Ethylene over H-MOR Studied by Density Functional Theory. ACS OMEGA 2020; 5:9707-9713. [PMID: 32391457 PMCID: PMC7203697 DOI: 10.1021/acsomega.9b03984] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 03/12/2020] [Indexed: 06/11/2023]
Abstract
The framework effect of H-mordenite (H-MOR) zeolite on monomolecular dehydration of ethanol to ethylene has been simulated based on density functional theory. It is indicated that both the reaction mechanism and the activation energy barriers are significantly affected by the pore-confinement effect. In the 12-membered ring (12-MR), the energy barriers of the stepwise mechanism and the concerted mechanism are 35.0 and 42.4 kcal mol-1, respectively, suggesting that ethylene can be competitively formed through both pathways. While in the 8-membered ring (8-MR), the barrier of the concerted mechanism is 43.4 kcal mol-1, which is much lower than that of the stepwise mechanism with the ethoxy intermediate formation barrier of 53.7 kcal mol-1. Furthermore, the water molecule acts as the intermediate to stabilize the transition states (TSs) for both stepwise and concerted mechanisms and helps to transport protons during the reaction.
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35
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Abdulrazzaq HT, Rahmani Chokanlu A, Frederick BG, Schwartz TJ. Reaction Kinetics Analysis of Ethanol Dehydrogenation Catalyzed by MgO–SiO 2. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00811] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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36
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Zhang X, Yang P, Liu Y, Pan J, Li D, Wang B, Feng J. Support morphology effect on the selective oxidation of glycerol over AuPt/CeO2 catalysts. J Catal 2020. [DOI: 10.1016/j.jcat.2020.01.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Niamnuy C, Prapaitrakul P, Panchan N, Seubsai A, Witoon T, Devahastin S, Chareonpanich M. Synthesis of Dimethyl Ether via CO 2 Hydrogenation: Effect of the Drying Technique of Alumina on Properties and Performance of Alumina-Supported Copper Catalysts. ACS OMEGA 2020; 5:2334-2344. [PMID: 32064395 PMCID: PMC7017421 DOI: 10.1021/acsomega.9b03713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
Thermal treatment during catalyst preparation is one of the important factors affecting the characteristics and performance of a catalyst. To improve the catalytic performance of an alumina-supported copper catalyst prepared by an impregnation method for dimethyl ether (DME) synthesis from CO2, the effects of the use of hot air and infrared drying as well as calcination at 600 and 900 °C to prepare alumina supports were investigated. Infrared drying could shorten the required drying time by 75% when compared with hot air drying. Infrared drying could also help maintain the pore size and pore volume of the supports, leading to their larger surface areas. Different drying techniques were additionally noted to result in different sizes and shapes of the pores as well as to different copper distributions and intensities of acid sites of the catalyst. An increase in the calcination temperature resulted in a decrease in the surface area of the supports because of particle aggregation. The drying technique exhibited a more significant effect than calcination temperature on the space-time yield of DME. A catalyst utilizing the support prepared by infrared drying and then calcined at 600 °C exhibited the highest yield of DME (40.9 gDME kgcat -1 h-1) at a reaction temperature of 300 °C. Stability of the optimal catalyst, when monitored over a 24 h period, was noted to be excellent.
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Affiliation(s)
- Chalida Niamnuy
- KU-Green
Catalysts Group, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
- Research
Network of NANOTEC-KU on NanoCatalysts and NanoMaterials for Sustainable
Energy and Environment, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
| | - Pawanrat Prapaitrakul
- KU-Green
Catalysts Group, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
| | - Noppadol Panchan
- Department
of Chemical Engineering, Faculty of Engineering, Mahanakorn University of Technology, 140 Cheum-Sampan Road, Nongchok, Bangkok 10530, Thailand
| | - Anusorn Seubsai
- KU-Green
Catalysts Group, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
- Research
Network of NANOTEC-KU on NanoCatalysts and NanoMaterials for Sustainable
Energy and Environment, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
| | - Thongthai Witoon
- KU-Green
Catalysts Group, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
- Research
Network of NANOTEC-KU on NanoCatalysts and NanoMaterials for Sustainable
Energy and Environment, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
| | - Sakamon Devahastin
- Advanced
Food Processing Research Laboratory, Department of Food Engineering,
Faculty of Engineering, King Mongkut’s
University of Technology Thonburi, 126 Pracha u-tid Road, Tungkru, Bangkok 10140, Thailand
- The
Academy of Science, The Royal Society of
Thailand, Dusit, Bangkok 10300, Thailand
| | - Metta Chareonpanich
- KU-Green
Catalysts Group, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
- Research
Network of NANOTEC-KU on NanoCatalysts and NanoMaterials for Sustainable
Energy and Environment, Kasetsart University, 50 Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
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38
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Shen L, Wang Y, Du JH, Chen K, Lin Z, Wen Y, Hung I, Gan Z, Peng L. Probing Interactions of γ-Alumina with Water via Multinuclear Solid-State NMR Spectroscopy. ChemCatChem 2020; 12:1569-1574. [PMID: 34168686 DOI: 10.1002/cctc.201901838] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Interaction of γ-alumina with water are important in controlling its structure and catalytic properties. We apply solid-state multinuclear NMR spectroscopy to investigate this interaction by monitoring 1H and 17O spectra in real-time. Surface-selective detection is made possible by adsorbing 17O-enriched water on γ-alumina nanorods. Structural evolution on the surface was selectively probed by 1H/17O double resonance NMR and 27Al NMR at ultrahigh 35.2 T magnetic field. Formation of hydroxyl species on the surface of nanorods is rapid upon the exposure of water, which involves low coordinated aluminum ions with doubly bridging and isolated hydroxyl species being generated first. Fast exchange occurs between oxygen atoms in the water molecules and bare surface sites, indicating high reactivity of these oxygen species. These results provide new insights into the structure and dynamics on the surface of γ-alumina and the methods applied here can be extended to study the interaction of other oxides with water.
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Affiliation(s)
- Li Shen
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.,Guangling College, Yangzhou University, Yangzhou 225009, China
| | - Yang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jia-Huan Du
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Kuizhi Chen
- National High Magnetic Field Laboratory (NHMFL), 1800 East, Paul Dirac Dr., Tallahassee, FL, 32310, USA
| | - Zhiye Lin
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yujie Wen
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Ivan Hung
- National High Magnetic Field Laboratory (NHMFL), 1800 East, Paul Dirac Dr., Tallahassee, FL, 32310, USA
| | - Zhehong Gan
- National High Magnetic Field Laboratory (NHMFL), 1800 East, Paul Dirac Dr., Tallahassee, FL, 32310, USA
| | - Luming Peng
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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39
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Surface modification of alumina with P2O5 and its application in 2-octanol dehydration. REACTION KINETICS MECHANISMS AND CATALYSIS 2020. [DOI: 10.1007/s11144-019-01717-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Izzo L, Tabanelli T, Cavani F, Blair Vàsquez P, Lucarelli C, Mella M. The competition between dehydrogenation and dehydration reactions for primary and secondary alcohols over gallia: unravelling the effects of molecular and electronic structure via a two-pronged theoretical/experimental approach. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02603g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The relative dehydrogenation/dehydration reactivity imparted by nanostructured gallium(iii) oxide on alcohols was investigated via electronic structure calculations, reactivity tests and DRIFT-IR spectroscopy.
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Affiliation(s)
- Lorella Izzo
- Dipartimento di Biotecnologia e Scienze della Vita
- Università degli Studi dell'Insubria
- 21100 Varese (I)
- Italy
| | - Tommaso Tabanelli
- Dipartimento di Chimica Industriale “Toso Montanari”
- Università degli Studi di Bologna
- 40136 Bologna (I)
- Italy
| | - Fabrizio Cavani
- Dipartimento di Chimica Industriale “Toso Montanari”
- Università degli Studi di Bologna
- 40136 Bologna (I)
- Italy
- Consorzio INSTM
| | - Paola Blair Vàsquez
- Dipartimento di Chimica Industriale “Toso Montanari”
- Università degli Studi di Bologna
- 40136 Bologna (I)
- Italy
| | - Carlo Lucarelli
- Dipartimento di Scienza ed Alta Tecnologia
- Università degli Studi dell'Insubria
- 22100 Como (I)
- Italy
- Consorzio INSTM
| | - Massimo Mella
- Dipartimento di Scienza ed Alta Tecnologia
- Università degli Studi dell'Insubria
- 22100 Como (I)
- Italy
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41
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Abdelgaid M, Dean J, Mpourmpakis G. Improving alkane dehydrogenation activity on γ-Al2O3 through Ga doping. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01474e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Doping the surface of γ-Al2O3 with gallium enhances the alkane dehydrogenation catalytic activity.
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Affiliation(s)
- Mona Abdelgaid
- Department of Chemical Engineering
- University of Pittsburgh
- Pittsburgh
- USA
| | - James Dean
- Department of Chemical Engineering
- University of Pittsburgh
- Pittsburgh
- USA
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42
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Abstract
In the upgrading of biomass pyrolysis vapors to hydrocarbons, dehydration accomplishes a primary objective of removing oxygen, and acidic zeolites represent promising catalysts for the dehydration reaction. Here, we utilized density functional theory calculations to estimate adsorption energetics and intrinsic kinetics of alcohol dehydration over H-ZSM-5, H-BEA, and H-AEL zeolites. The ONIOM (our Own N-layered Integrated molecular Orbital and molecular Mechanics) calculations of adsorption energies were observed to be inconsistent when benchmarked against QM (Quantum Mechanical)/Hartree–Fock and periodic boundary condition calculations. However, reaction coordinate calculations of adsorbed species and transition states were consistent across all levels considered. Comparison of ethanol, isopropanol (IPA), and tert-amyl alcohol (TAA) over these three zeolites allowed for a detailed examination of how confinement impacts on reaction mechanisms and kinetics. The TAA, seen to proceed via a carbocationic mechanism, was found to have the lowest activation barrier, followed by IPA and then ethanol, both of which dehydrate via a concerted mechanism. Barriers in H-BEA were consistently found to be lower than in H-ZSM-5 and H-AEL, attributed to late transition states and either elevated strain or inaccurately estimating long-range electrostatic interactions in H-AEL, respectively. Molecular dynamics simulations revealed that the diffusivity of these three alcohols in H-ZSM-5 were significantly overestimated by Knudsen diffusion, which will complicate experimental efforts to develop a kinetic model for catalytic fast pyrolysis.
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43
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Wu J, Murphy BM, Gould NS, Wang C, Ma L, Xu B. A FTIR Study of the Acidity of in situ Generated Brønsted Sites on NaY via Displacement Reactions. ChemCatChem 2019. [DOI: 10.1002/cctc.201900764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jingcheng Wu
- Guangzhou Institute of Energy ConversionChinese Academy of Sciences 2 Nengyuan Road Guangzhou, Guangdong 510000 P. R. China
- Center for Catalytic Science and Technology Department of Chemical and Biomolecular EngineeringUniversity of Delaware 150 Academy Street Newark DE 19716 USA
- Key Laboratory of Renewable EnergyChinese Academy of Sciences 2 Nengyuan Road Guangzhou, Guangdong 510000 P. R. China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and DevelopmentChinese Academy of Sciences 2 Nengyuan Road Guangzhou, Guangdong 510000 P. R. China
- University of Chinese Academy of Sciences Huairou Beijing 101408 P. R. China
| | - Brian M. Murphy
- Center for Catalytic Science and Technology Department of Chemical and Biomolecular EngineeringUniversity of Delaware 150 Academy Street Newark DE 19716 USA
| | - Nicholas S. Gould
- Center for Catalytic Science and Technology Department of Chemical and Biomolecular EngineeringUniversity of Delaware 150 Academy Street Newark DE 19716 USA
| | - Chenguang Wang
- Guangzhou Institute of Energy ConversionChinese Academy of Sciences 2 Nengyuan Road Guangzhou, Guangdong 510000 P. R. China
- Key Laboratory of Renewable EnergyChinese Academy of Sciences 2 Nengyuan Road Guangzhou, Guangdong 510000 P. R. China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and DevelopmentChinese Academy of Sciences 2 Nengyuan Road Guangzhou, Guangdong 510000 P. R. China
- University of Chinese Academy of Sciences Huairou Beijing 101408 P. R. China
| | - Longlong Ma
- Guangzhou Institute of Energy ConversionChinese Academy of Sciences 2 Nengyuan Road Guangzhou, Guangdong 510000 P. R. China
- Key Laboratory of Renewable EnergyChinese Academy of Sciences 2 Nengyuan Road Guangzhou, Guangdong 510000 P. R. China
- Guangdong Provincial Key Laboratory of New and Renewable Energy Research and DevelopmentChinese Academy of Sciences 2 Nengyuan Road Guangzhou, Guangdong 510000 P. R. China
- University of Chinese Academy of Sciences Huairou Beijing 101408 P. R. China
| | - Bingjun Xu
- Center for Catalytic Science and Technology Department of Chemical and Biomolecular EngineeringUniversity of Delaware 150 Academy Street Newark DE 19716 USA
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44
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Ballesteros-Soberanas J, Ellis LD, Medlin JW. Effects of Phosphonic Acid Monolayers on the Dehydration Mechanism of Aliphatic Alcohols on TiO2. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02082] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jordi Ballesteros-Soberanas
- Department of Chemical & Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - Lucas D. Ellis
- Department of Chemical & Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
| | - J. Will Medlin
- Department of Chemical & Biological Engineering, University of Colorado, Boulder, Colorado 80309, United States
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45
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Hamed Bateni, Chad Able. Development of Heterogeneous Catalysts for Dehydration of Methanol to Dimethyl Ether: A Review. CATALYSIS IN INDUSTRY 2019. [DOI: 10.1134/s2070050419010045] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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46
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47
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Zhou X, Wang C, Chu Y, Xu J, Wang Q, Qi G, Zhao X, Feng N, Deng F. Observation of an oxonium ion intermediate in ethanol dehydration to ethene on zeolite. Nat Commun 2019; 10:1961. [PMID: 31036815 PMCID: PMC6488627 DOI: 10.1038/s41467-019-09956-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 04/02/2019] [Indexed: 11/10/2022] Open
Abstract
Zeolite-catalyzed dehydration of ethanol offers promising perspectives for the sustainable production of ethene. Complex parallel-consecutive pathways are proposed to be involved in the reaction network of ethanol dehydration on zeolites, where the initial step of ethanol dehydration is still unclear particularly for the favorable production of ethene at lower temperature. Here we report the observation of a triethyloxonium ion (TEO) in the dehydration of ethanol on zeolite H-ZSM-5 by using ex situ and in situ solid-state NMR spectroscopy. TEO is identified as a stable surface species on the working catalyst, which shows high reactivity during reaction. Ethylation of the zeolite by TEO occurs at lower temperature, leading to the formation of surface ethoxy species and then ethene. The TEO-ethoxide pathway is found to be energetically preferable for the dehydration of ethanol to ethene in the initial stage, which is also supported by theoretical calculations.
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Affiliation(s)
- Xue Zhou
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chao Wang
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Yueying Chu
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Jun Xu
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China. .,Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Qiang Wang
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Guodong Qi
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Xingling Zhao
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ningdong Feng
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Feng Deng
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, China.
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48
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Jiang L, Guo H, Li C, Zhou P, Zhang Z. Selective cleavage of lignin and lignin model compounds without external hydrogen, catalyzed by heterogeneous nickel catalysts. Chem Sci 2019; 10:4458-4468. [PMID: 31057773 PMCID: PMC6482439 DOI: 10.1039/c9sc00691e] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 02/22/2019] [Indexed: 01/28/2023] Open
Abstract
Selective hydrogenolysis of the Caryl-O bonds in lignin is a key strategy for the generation of fuels and chemical feedstocks from biomass. Currently, hydrogenolysis has been mainly conducted using hydrogen, which is flammable and not sustainable or economical. Herein, an external hydrogen-free process for aryl ethers hydrogenolysis in lignin models and dioxasolv lignin over nickel nanoparticles supported on Al2O3, is reported. Kinetic studies reveal that the transfer hydrogenolysis activity of the three model compounds decreased in the following order: benzyl phenyl ether (α-O-4), 2-phenylethyl phenyl ether (β-O-4) and diphenyl ether (4-O-5), which linearly corresponds to their binding energies and the activation energies. The main reaction route for the three model compounds was the cleavage of the ether bonds to produce aromatic alkanes and phenol, and the latter was further reduced to cyclohexanol. Dioxasolv lignin depolymerization results exhibit a significant Caryl-O decrease over the Ni nanoparticles supported on Al2O3 with iso-propanol as the hydrogen source through 2D-HSQC-NMR analysis, which confirmed the transfer hydrogenolysis conclusion in the model study. This work provides an economical and environmentally-friendly method for the selective cleavage of lignin and lignin model compounds into value-added chemicals.
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Affiliation(s)
- Liang Jiang
- Key Laboratory of Catalysis and Materials Sciences of the Ministry of Education , South-Central University for Nationalities , Wuhan , 430074 , China . ; ; Tel: +86-27-67842572
| | - Haiwei Guo
- State Key Laboratory of Catalysis , Dalian Institute of Chemical Physics , Chinese Academy of Sciences , Dalian 116023 , China .
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Changzhi Li
- State Key Laboratory of Catalysis , Dalian Institute of Chemical Physics , Chinese Academy of Sciences , Dalian 116023 , China .
| | - Peng Zhou
- Key Laboratory of Catalysis and Materials Sciences of the Ministry of Education , South-Central University for Nationalities , Wuhan , 430074 , China . ; ; Tel: +86-27-67842572
| | - Zehui Zhang
- Key Laboratory of Catalysis and Materials Sciences of the Ministry of Education , South-Central University for Nationalities , Wuhan , 430074 , China . ; ; Tel: +86-27-67842572
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49
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Eagan NM, Kumbhalkar MD, Buchanan JS, Dumesic JA, Huber GW. Chemistries and processes for the conversion of ethanol into middle-distillate fuels. Nat Rev Chem 2019. [DOI: 10.1038/s41570-019-0084-4] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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50
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Srinivasan PD, Patil BS, Zhu H, Bravo-Suárez JJ. Application of modulation excitation-phase sensitive detection-DRIFTS for in situ/operando characterization of heterogeneous catalysts. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00011a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new more general method and guidelines for the implementation of modulation excitation-phase sensitive detection-diffuse reflectance Fourier transform spectroscopy (ME-PSD-DRIFTS).
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Affiliation(s)
- Priya D. Srinivasan
- Department of Chemical & Petroleum Engineering
- The University of Kansas
- Lawrence
- USA
- Center for Environmentally Beneficial Catalysis
| | - Bhagyesha S. Patil
- Department of Chemical & Petroleum Engineering
- The University of Kansas
- Lawrence
- USA
- Center for Environmentally Beneficial Catalysis
| | - Hongda Zhu
- Center for Environmentally Beneficial Catalysis
- The University of Kansas
- Lawrence
- USA
| | - Juan J. Bravo-Suárez
- Department of Chemical & Petroleum Engineering
- The University of Kansas
- Lawrence
- USA
- Center for Environmentally Beneficial Catalysis
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