1
|
Li X, Zhang Q, Xu M, Li X. Modulation of metal nanocatalysts for enhanced selectivity of chemoselective reduction and addition hydrogenation. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.113028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
|
2
|
Pu J, Liu C, Shi S, Yun J. Hydrogenation of MTHPA to MHHPA over Ni-based catalysts: Al 2O 3 coating, Ru incorporation and kinetics. RSC Adv 2022; 12:34268-34281. [PMID: 36545590 PMCID: PMC9709665 DOI: 10.1039/d2ra06738b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 11/23/2022] [Indexed: 12/05/2022] Open
Abstract
Because of its excellent performance, methyl hexahydrophthalic anhydride (MHHPA) is a new anhydride-based epoxy resin curing agent after methyl tetrahydrophthalic anhydride (MTHPA). To improve the activity and stability of conventional RANEY® nickel catalysts in the catalytic hydrogenation of MTHPA to MHHPA reaction, RANEY® nickel encapsulated with porous Al2O3 and alumina-supported Ni-Ru bimetallic catalysts were designed and synthesized in this study. The physicochemical properties and surface reactions over the catalysts were characterized by N2 adsorption and desorption, X-ray diffraction (XRD), hydrogen temperature-programmed reduction/desorption (H2-TPR/TPD), X-ray photoelectron spectroscopy (XPS), scanning electronic microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and in situ diffuse reflectance infrared Fourier transformations spectroscopy (DRIFTS). The kinetic model of MTHPA hydrogenation over NiRu/Al was established and the parameters were estimated using the least-square method. The results showed that the encapsulation of porous Al2O3 on the surface of RANEY® nickel enhanced the stability of the Ni skeleton and the adsorption ability of the reactant molecules, which improved its activity for the hydrogenation reaction. The introduction of Ru improved the dispersion and stability of metallic Ni, which greatly increased the conversion ability towards MTHPA hydrogenation, but it had a trend to cause C[double bond, length as m-dash]C bond transfer at lower temperatures, increasing the hydrogenation difficulties. The kinetic results based on Ni-Ru bimetallic catalyst showed that the MTHPA hydrogenation reaction rate was first-order with respect to MTHPA concentration and 0.5-order with respect to hydrogen partial pressure, and the apparent activation energy of the hydrogenation reaction was 37.02 ± 2.62 kJ mol-1.
Collapse
Affiliation(s)
- Jianglong Pu
- College of Chemical Engineering, Zhejiang University of TechnologyChangwang Road 18Hangzhou 310032China,College of Biological, Chemical Sciences and Engineering, Jiaxing University118 Jiahang RoadJiaxing 314001China
| | - Changhao Liu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University118 Jiahang RoadJiaxing 314001China
| | - Shenming Shi
- Zhejiang ZhengDa New Materials Technology Co., Ltd228 Mingxin RoadJiaxing 314006China
| | - Junxian Yun
- College of Chemical Engineering, Zhejiang University of TechnologyChangwang Road 18Hangzhou 310032China
| |
Collapse
|
3
|
Gilbert SJ, Rosenberg SG, Kotula PG, Kmieciak TG, Biedermann LB, Siegal MP. The effect of metal-insulator interface interactions on electrical transport in granular metals. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:204007. [PMID: 35289307 DOI: 10.1088/1361-648x/ac5706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
We present an in-depth study of metal-insulator interfaces within granular metal (GM) films and correlate their interfacial interactions with structural and electrical transport properties. Nominally 100 nm thick GM films of Co and Mo dispersed within yttria-stabilized zirconia (YSZ), with volumetric metal fractions (φ) from 0.2-0.8, were grown by radio frequency co-sputtering from individual metal and YSZ targets. Scanning transmission electron microscopy and DC transport measurements find that the resulting metal islands are well-defined with 1.7-2.6 nm average diameters and percolation thresholds betweenφ= 0.4-0.5. The room temperature conductivities for theφ= 0.2 samples are several orders of magnitude larger than previously-reported for GMs. X-ray photoemission spectroscopy indicates both oxygen vacancy formation within the YSZ and band-bending at metal-insulator interfaces. The higher-than-predicted conductivity is largely attributed to these interface interactions. In agreement with recent theory, interactions that reduce the change in conductivity across the metal-insulator interface are seen to prevent sharp conductivity drops when the metal concentration decreases below the percolation threshold. These interface interactions help interpret the broad range of conductivities reported throughout the literature and can be used to tune the conductivities of future GMs.
Collapse
Affiliation(s)
- Simeon J Gilbert
- Sandia National Laboratories, Albuquerque, NM 87185, United States of America
| | | | - Paul G Kotula
- Sandia National Laboratories, Albuquerque, NM 87185, United States of America
| | - Thomas G Kmieciak
- Sandia National Laboratories, Albuquerque, NM 87185, United States of America
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States of America
| | - Laura B Biedermann
- Sandia National Laboratories, Albuquerque, NM 87185, United States of America
| | - Michael P Siegal
- Sandia National Laboratories, Albuquerque, NM 87185, United States of America
| |
Collapse
|
4
|
Ren J, Zeng F, Mebrahtu C, Palkovits R. Understanding promotional effects of trace oxygen in CO2 methanation over Ni/ZrO2 catalysts. J Catal 2022. [DOI: 10.1016/j.jcat.2021.12.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
5
|
Hongloi N, Prapainainar P, Prapainainar C. Review of green diesel production from fatty acid deoxygenation over Ni-based catalysts. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111696] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
6
|
Wu Y, Sun Y, Liang K, Yang Z, Tu R, Fan X, Cheng S, Yu H, Jiang E, Xu X. Enhancing Hydrodeoxygenation of Bio-oil via Bimetallic Ni-V Catalysts Modified by Cross-Surface Migrated-Carbon from Biochar. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21482-21498. [PMID: 33928779 DOI: 10.1021/acsami.1c05350] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Aromatics from selective hydrodeoxygenation (HDO) of biomass-derived bio-oil are an ideal feedstock for replacing industrial fossil products. In this study, biochar-modified Hβ/Ni-V catalysts were prepared and tested in the atmospheric HDO of guaiacol and bio-oil to produce aromatics. Compared with unmodified Hβ/Ni-V, higher HDO activity was achieved in catalysts with all kinds of biochar modifications. Especially, the pine nut shell biochar (PB)-modified PB-Hβ-8/Ni-V showed the highest selectivity to aromatics (69.17%), mainly including benzene and toluene. Besides, under the conditions of 380 °C and weight hourly space velocity (WHSV) of 0.5 h-1, the cleavage of CAr-OH (CAr means the carbon in the benzene ring) was promoted to form more aromatics. Moreover, great recyclability (58.77% aromatics for the reactivated run-3 test) and efficient HDO of bio-oil (44.9% aromatic yield) were also achieved. Based on the characterization results, the enhanced aromatic selectivity of PB-Hβ-8/Ni-V was attributed to the synergetic effect between PB and Hβ/Ni-V. In detail, a stable surface migrated-carbon layer was formed on Hβ/Ni-V via the metal catalytic chemical vapor deposition (CVD) process of the pyrolysis PB volatiles. Simultaneously, a carbothermal reduction driven by the migrated-carbon took place to decorate the surface metals, obtaining more Ni0 and V3+ active sites. With this synergism, increased Ni0 sites promoted H2 adsorption and dissociation, which improved the hydrogenation activity. Furthermore, the higher affinity of the reactant and increased oxygen vacancies both contributed to enhancing the selective surface adsorption of oxygenous groups and the cleavage of the CAr-OH bond, thus improving the deoxygenation activity. Therefore, the HDO activity was improved to form more target aromatics over biochar-modified catalysts. This work highlighted a potential avenue to develop economic and environmental catalysts for the upgrading of bio-oil.
Collapse
Affiliation(s)
- Yujian Wu
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| | - Yan Sun
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| | - Kaili Liang
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| | - Zhengguang Yang
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| | - Ren Tu
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| | - Xudong Fan
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| | - Shuchao Cheng
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| | - Haipeng Yu
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| | - Enchen Jiang
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| | - Xiwei Xu
- College of Materials and Energy, South China Agricultural University, Guangzhou 510640, China
| |
Collapse
|
7
|
Patil KN, Prasad D, Bhanushali JT, Kakade B, Jadhav AH, Nagaraja BM. Chemoselective hydrogenation of cinnamaldehyde over a tailored oxygen-vacancy-rich Pd@ZrO2 catalyst. NEW J CHEM 2021. [DOI: 10.1039/d0nj05595f] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective hydrogenation of cinnamaldehyde to hydrocinnamaldehyde is captivating due to its industrial relevance.
Collapse
Affiliation(s)
- Komal N. Patil
- Centre for Nano and Material Science (CNMS)
- JAIN (Deemed-to-be University)
- Bangalore-562112
- India
| | - Divya Prasad
- Centre for Nano and Material Science (CNMS)
- JAIN (Deemed-to-be University)
- Bangalore-562112
- India
| | - Jayesh T. Bhanushali
- Centre for Nano and Material Science (CNMS)
- JAIN (Deemed-to-be University)
- Bangalore-562112
- India
| | - Bhalchandra Kakade
- Department of Chemistry
- SRM Research Institute
- SRM Institute of Science and Technology
- Chennai
- India
| | - Arvind H. Jadhav
- Centre for Nano and Material Science (CNMS)
- JAIN (Deemed-to-be University)
- Bangalore-562112
- India
| | - Bhari Mallanna Nagaraja
- Centre for Nano and Material Science (CNMS)
- JAIN (Deemed-to-be University)
- Bangalore-562112
- India
| |
Collapse
|
8
|
Date NS, Hengne AM, Huang K, Chikate RC, Rode CV. One Pot Hydrogenation of Furfural to 2‐Methyl Tetrahydrofuran over Supported Mono‐ and Bi‐metallic Catalysts. ChemistrySelect 2020. [DOI: 10.1002/slct.202002322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nandan S. Date
- Chemical Engineering and process development DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008
- Department of ChemistryMES's Abasaheb Garware College Karve Road Pune 411004
| | - Amol M. Hengne
- Catalysis Centre and Division of Physical Sciences and EngineeringKing Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - K.‐W. Huang
- Catalysis Centre and Division of Physical Sciences and EngineeringKing Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Rajeev C. Chikate
- Department of ChemistryMES's Abasaheb Garware College Karve Road Pune 411004
| | - Chandrashekhar V. Rode
- Chemical Engineering and process development DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008
| |
Collapse
|
9
|
Yentekakis IV, Chu W. Advances in Heterocatalysis by Nanomaterials. NANOMATERIALS 2020; 10:nano10040609. [PMID: 32224925 PMCID: PMC7221995 DOI: 10.3390/nano10040609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 03/18/2020] [Accepted: 03/24/2020] [Indexed: 11/16/2022]
Affiliation(s)
- Ioannis V. Yentekakis
- Physical Chemistry & Chemical Processes Laboratory, School of Environmental Engineering, Technical University of Crete (TUC), 73100-Chania, Crete, Greece
- Correspondence: ; Tel.: +30-28210-37752
| | - Wei Chu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education (MOE), College of Chemical Engineering, Sichuan University, Sichuan 610065, China
| |
Collapse
|
10
|
Abstract
The catalytic activity of high-loaded Ni-based catalysts for beech wood fast-pyrolysis bio-oil hydrotreatment is compared to Ru/C. The influence of promoter, temperature, reaction time, and consecutive upgrading is investigated. The catalytic activity is addressed in terms of elemental composition, pH value, H2 consumption, and water content, while the selectivity is based on the GC-MS/FID results. The catalysts showed similar deoxygenation activity, while the highest hydrogenation activity and the highest upgraded oil yields were obtained with Ni-based catalysts. The elemental composition of upgraded oils was comparable for 2 and 4 h of reaction, and the temperature showed a positive effect for reactions with Ni–Cr and Ru/C. Ni–Cr showed superior activity for the conversion of organic acids, sugars and ketones, being selected for the 2-step upgrading reaction. The highest activity correlates to the strength of the acid sites promoted by Cr2O3. Consecutive upgrading reduced the content of oxygen by 64.8% and the water content by 90%, whereas the higher heating value increased by 90.1%. While more than 96% of the organic acid content was converted, the discrepancy of aromatic compounds quantified by 1H-NMR and GC-MS/FID may indicate polymerization of aromatics taking place during the second upgrading step.
Collapse
|
11
|
Tuning Selectivity of Maleic Anhydride Hydrogenation Reaction over Ni/Sc-Doped ZrO2 Catalysts. Catalysts 2019. [DOI: 10.3390/catal9040366] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A series of Sc-doped ZrO2 supports, with Sc2O3 content in the range of 0 to 7.5% (mol/mol), were prepared using the hydrothermal method. Ni/Sc-doped ZrO2 catalysts with nickel loading of 10% (w/w) were prepared using impregnation method, and characterized with the use of XRD, Raman, H2 temperature-programmed reduction (H2-TPR), H2 temperature-programmed desorption (H2-TPD), XPS, and in situ FT-IR techniques. The catalytic performances of Ni/Sc-doped ZrO2 catalysts in maleic anhydride hydrogenation were tested. The results showed that the introduction of Sc3+ into ZrO2 support could effectively manipulate the distribution of maleic anhydride hydrogenation products. γ-butyrolactone was the major hydrogenation product over Sc-free Ni/ZrO2 catalyst with selectivity as high as 65.8% at 210 °C and 5 MPa of H2 pressure. The Ni/Sc-doped ZrO2 catalyst, with 7.5 mol% of Sc2O3 content, selectively catalyzed maleic anhydride hydrogenation to succinic anhydride, the selectivity towards succinic anhydride was up to 97.6% under the same reaction condition. The results of the catalysts’ structure–activity relationships revealed that there was an interdependence between the surface structure of ZrO2-based support and the C=O hydrogenation performance of the ZrO2-based supported nickel catalysts. By controlling the Sc2O3 content, the surface structure of ZrO2-based support could be regulated effectively. The different surface structure of ZrO2-based supports, resulted in the different degree of interaction between the nickel species and ZrO2-based supports; furthermore, the different interaction led to the different surface oxygen vacancies electron properties of ZrO2-based supported nickel catalysts and the C=O hydrogenation activity of the catalyst. This result provides new insight into the effect of ZrO2 support on the selective hydrogenation activity of ZrO2-supported metal catalysts and contributes to the design of selective hydrogenation catalysts for other unsaturated carbonyl compounds.
Collapse
|