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Taco-Vasquez S, Holtzapple MT. Conversion of acetone and mixed ketones to hydrocarbons using HZSM-5 catalyst in the carboxylate platform. PLoS One 2022; 17:e0277184. [PMID: 36409721 PMCID: PMC9678301 DOI: 10.1371/journal.pone.0277184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 10/23/2022] [Indexed: 11/22/2022] Open
Abstract
In this study, two different feeds were treated to produce hydrocarbons: (1) reagent-grade acetone, and (2) mixed ketones obtained from lignocellulosic biomass via the carboxylate platform. Acetone and mixed ketones underwent catalytic self-condensation over HZSM-5. For acetone, HZSM-5(80) was used, and the experiments were conducted in two sets: (1) vary temperature (305-415°C) at P = 101 kPa (abs) and weight hourly space velocity (WHSV) = 1.3 h-1; (2) vary WHSV (1.3-7.9 h-1) at T = 350 and 415°C, and P = 101 kPa (abs). For acetone over HZSM-5(280), the experiments were conducted in two sets: (1) vary WHSV (1.3-6.5 h-1) at T = 415°C, and P = 101 kPa (abs); and (2) vary WHSV (1.3-11.8 h-1) at P = 790 kPa (abs) and T = 415°C. For mixed ketones, HZSM-5(280) was used at WHSV = 1.9 h-1, T = 430-590°C, and P = 101 kPa (abs). For acetone at higher temperatures, the conversion was 100% and the liquid products were aromatics centered on C8. At low temperatures, conversion was less and the carbon liquid distribution was centered on C9 (mainly mesitylene). For mixed ketones, catalyst deactivation was higher causing product concentrations to change over time, and the highest conversion reached was 40%.
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Affiliation(s)
- Sebastian Taco-Vasquez
- Departamento de Ingeniería Química, Escuela Politécnica Nacional, Quito, Ecuador
- * E-mail:
| | - Mark T. Holtzapple
- Department of Chemical Engineering, Texas A&M University, College Station, Texas, United States of America
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2
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Cao X, Wang K, Kong L, Gu Z, Wang F. Comparison of surface passivation modification of two mordenite zeolites and their application on the isomerisation of o-ethyltoluene. RSC Adv 2022; 12:31326-31337. [PMID: 36349034 PMCID: PMC9623558 DOI: 10.1039/d2ra05390j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023] Open
Abstract
During the isomerisation of o-ethyltoluene (O-ET) to produce m-ethyltoluene (M-ET) and p-ethyltoluene (P-ET), it is crucial to improve the isomerisation selectivity and reduce side reactions, such as disproportionation, alkyl transfer, and splitting. In this study, in order to improve the selectivities toward M-ET and P-ET during O-ET isomerisation, both the commercial micropore mordenite (HM) and the prepared micro-mesoporous mordenite (HM-M) were treated through chemical liquid deposition using tetraethyl orthosilicate (TEOS) and 3,5-dimethylphenylmagnesium bromide (DPB), respectively. Thereafter, their structure, porosity, and acidity were characterized via X-ray diffraction, transmission electron microscopy, inductively coupled plasma, N2 sorption, temperature-programmed desorption of ammonia, Fourier-transform infrared spectroscopy of pyridine and 2,6-di-tert-butylpyridine, and thermal analysis. The deposition mechanism of DPB was also discussed. The results showed that TEOS could shrink and block the micropores of mordenite. By contrast, DPB passivated the external surface acidity and did not affect the micropore structure. Moreover, HM modified using DPB significantly shortened the self-coking process, improved the product selectivities for M-PT and P-ET as well as their stability, and prolonged the catalytic life. When the amount of magnesium oxide (MgO) deposited on the HM zeolite was 4%, the product selectivities toward M-ET and P-ET increased from 67.27% to 77.54%, and the yields of M-ET and P-ET increased from 47.57% to 52.98%. However, the performance of the catalyst was not significantly enhanced on the HM-M, owing to the passivation of acidic sites in the mesopores by the TEOS and DPB.
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Affiliation(s)
- Xiaoyan Cao
- School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University Nanjing 210023 China
| | - Kaijun Wang
- School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University Nanjing 210023 China
| | - Lingxin Kong
- School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University Nanjing 210023 China
| | - Zhenggui Gu
- School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University Nanjing 210023 China
| | - Fang Wang
- School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
- Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University Nanjing 210023 China
- Center of Analysis and Testing, Nanjing Normal University Nanjing 210023 China
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3
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Restraining deactivation of β-zeolite by modifying with MgAl2O4 spinel in gas-phase glycerol dehydration. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Zaera F. Designing Sites in Heterogeneous Catalysis: Are We Reaching Selectivities Competitive With Those of Homogeneous Catalysts? Chem Rev 2022; 122:8594-8757. [PMID: 35240777 DOI: 10.1021/acs.chemrev.1c00905] [Citation(s) in RCA: 69] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A critical review of different prominent nanotechnologies adapted to catalysis is provided, with focus on how they contribute to the improvement of selectivity in heterogeneous catalysis. Ways to modify catalytic sites range from the use of the reversible or irreversible adsorption of molecular modifiers to the immobilization or tethering of homogeneous catalysts and the development of well-defined catalytic sites on solid surfaces. The latter covers methods for the dispersion of single-atom sites within solid supports as well as the use of complex nanostructures, and it includes the post-modification of materials via processes such as silylation and atomic layer deposition. All these methodologies exhibit both advantages and limitations, but all offer new avenues for the design of catalysts for specific applications. Because of the high cost of most nanotechnologies and the fact that the resulting materials may exhibit limited thermal or chemical stability, they may be best aimed at improving the selective synthesis of high value-added chemicals, to be incorporated in organic synthesis schemes, but other applications are being explored as well to address problems in energy production, for instance, and to design greener chemical processes. The details of each of these approaches are discussed, and representative examples are provided. We conclude with some general remarks on the future of this field.
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Affiliation(s)
- Francisco Zaera
- Department of Chemistry and UCR Center for Catalysis, University of California, Riverside, California 92521, United States
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5
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de Oliveira AA, da Silva VL, de Aguiar Pontes D, Almeida DF, Silva DSA, Ferreira JMM, Santos RC, Urquieta-Gonzalez EA, Pontes LAM. Mesoporous HBeta zeolites application in the desulfurization of 2-methylthiophene. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [DOI: 10.1007/s11144-020-01921-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Thangadurai T, Tye CT. Acidity and basicity of metal oxide-based catalysts in catalytic cracking of vegetable oil. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1007/s43153-020-00085-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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7
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Sustainable Production of Hydrogen by Steam Reforming of Ethanol Using Cobalt Supported on Nanoporous Zeolitic Material. NANOMATERIALS 2020; 10:nano10101934. [PMID: 32998234 PMCID: PMC7600541 DOI: 10.3390/nano10101934] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 09/18/2020] [Accepted: 09/23/2020] [Indexed: 11/17/2022]
Abstract
Cobalt catalysts supported on Y zeolite and mesoporized Y zeolite (Y-mod) have been studied in steam reforming of ethanol (SRE). Specifically, the effect of the mesoporosity and the acidity of the y zeolite as a support has been explored. Mesoporous were generated on Y zeolite by treatment with NH4F and the acidity was neutralized by Na incorporation. Four cobalt catalysts supported on Y zeolite have been prepared, two using Y zeolite without mesoporous (Co/Y, Co/Y-Na), and two using Y zeolite with mesoporous (Co/Y-mod and Co/Y-mod-Na). All catalysts showed a high activity, with ethanol conversion values close to 100%. The main differences were found in the distribution of the reaction products. Co/Y and Co/Y-mod catalysts showed high selectivity to ethylene and low hydrogen production, which was explained by their high acidity. On the contrary, neutralization of the acid sites could explain the higher hydrogen selectivity and the lower ethylene yields exhibited by the Co/Y-Na and Co/Y-mod-Na. In addition, the physicochemical characterization of these catalysts by XRD, BET surface area, temperature-programmed reduction (TPR), and TEM allowed to connect the presence of mesoporous with the formation of metallic cobalt particles with small size, high dispersion, and with high interaction with the zeolitic support, explaining the high reforming activity exhibited by the co/y-mod-Na sample as well as its higher hydrogen selectivity. It has been also observed that the formation of coke is affected by the presence of mesoporous and acidity. Both properties seem to have an opposite effect on the reforming catalyst, decreasing and increasing the coke deposition, respectively.
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8
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Zonetti PC, Bridi VL, Gonzalez GG, Moreira CR, Alves OC, de Avillez RR, Appel LG. Isobutene from Ethanol: Describing the Synergy between In
2
O
3
and
m
‐ZrO
2. ChemCatChem 2019. [DOI: 10.1002/cctc.201900633] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Priscila C. Zonetti
- Divisão de Catálise e Processos QuímicosInstituto Nacional de Tecnologia Av Venezuela 82, sala 518 20081-312 Rio de Janeiro, RJ Brazil
| | - Vivian L. Bridi
- Divisão de Catálise e Processos QuímicosInstituto Nacional de Tecnologia Av Venezuela 82, sala 518 20081-312 Rio de Janeiro, RJ Brazil
| | - Guilherme G. Gonzalez
- Divisão de Catálise e Processos QuímicosInstituto Nacional de Tecnologia Av Venezuela 82, sala 518 20081-312 Rio de Janeiro, RJ Brazil
- Laboratório de Catálise, Petróleo e Meio AmbienteUniversidade Estadual do Rio de Janeiro Av. São Francisco Xavier, 524, sala 319, Maracanã. Pavilhão Haroldo Lisboa da Cunha 20550-900 Rio de Janeiro, RJ Brazil
| | - Carla R. Moreira
- Divisão de Catálise e Processos QuímicosInstituto Nacional de Tecnologia Av Venezuela 82, sala 518 20081-312 Rio de Janeiro, RJ Brazil
| | - Odivaldo C. Alves
- Instituto de Química, Centro de Estudos GeraisUniversidade Federal Fluminense Campos de Valonginho s/n, Centro 24020-141, Niterói, RJ Brazil
| | - Roberto R. de Avillez
- Departamento de Engenharia Química e de Materiais Centro Técnico-CientíficoPontifícia Universidade Católica do Rio de Janeiro Rua Marquês de São Vicente 225 22451-900 Rio de Janeiro, RJ Brazil
| | - Lucia G. Appel
- Divisão de Catálise e Processos QuímicosInstituto Nacional de Tecnologia Av Venezuela 82, sala 518 20081-312 Rio de Janeiro, RJ Brazil
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Abstract
The heavy dependence on fossil fuels raises many concerns on unsustainability and negative environmental impact. Biomass valorization to sustainable chemicals and fuels is an attractive strategy to reduce the reliance on fossil fuel sources. Gasification, liquefaction and pyrolysis are the main thermochemical technologies for biomass conversion. Gasification occurs at high temperature and yields the gas (syngas) as the main product. Liquefaction is conducted at low temperature but high pressure, which mainly produces liquid product with high quality. Biomass pyrolysis is performed at a moderate temperature and gives a primarily liquid product (bio-oil). However, the liquid product from biomass conversion is not advantageous for direct use as a fuel. Compared to liquefaction, pyrolysis is favorable when the aim is to produce the maximum amount of the liquid product from the biomass. Hydrotreating for bio-oil upgrading requires a large amount of expensive hydrogen, making this process costly. Catalytic cracking of bio-oil to reduce the oxygen content leads to a low H/C ratio. Methanolysis is a novel process that utilizes methane instead of hydrogen for biomass conversion. The feasibility studies show that this approach is quite promising. The original complexity of biomass and variation in composition make the composition of the product from biomass conversion unpredictable. Model compounds are employed to better understand the reaction mechanism and develop an optimal catalyst for obtaining the desired product. The major thermochemical technologies and the mechanism based on model compound investigations are reviewed in the article.
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Affiliation(s)
- Aiguo Wang
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, AB, Canada
| | - Danielle Austin
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, AB, Canada
| | - Hua Song
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, AB, Canada
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10
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Chevella D, Macharla AK, Kodumuri S, Banothu R, Gajula KS, Amrutham V, Gennadievna GN, Nama N. Synthesis of internal olefins by direct coupling of alcohols and olefins over Moβ zeolite. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.01.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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11
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Kianfar E, Salimi M, Hajimirzaee S, Koohestani B. Methanol to Gasoline Conversion over CuO/ZSM-5 Catalyst Synthesized Using Sonochemistry Method. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2019. [DOI: 10.1515/ijcre-2018-0127] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this research, the catalytic conversion of methanol to gasoline range hydrocarbons has been studied over CuO (5 %)/ZSM-5 and CuO (7 %)/ZSM-5 catalysts prepared via sonochemistry methods. Conversion of methanol to gasoline (MTG) has been carried out in a fixed bed reactor under atmospheric pressure and 400˚C temperature, over copper oxide on the synthesized ZSM-5 catalyst. The samples were characterized by XRD, SEM, TEM, BET, and FTIR techniques; in which good crystallinity and high specific surface area of synthesized zeolite were proved after impregnation of zeolite with copper. The present investigation suggests that the CuO/ZSM-5 catalyst made by sonochemistry method can increase the yield toward hydrocarbon production. It was concluded that impregnation of zeolite with copper oxide can alter the Brønsted/Lewis acid sites ratio and provide new Lewis acid sites over the surface of the ZSM-5. The main products of methanol to gasoline reaction over the catalyst that prepared via sonochemistry method were toluene, xylene, ethylbenzene, ethyl toluene, tetra methylbenzene, diethyl benzene and butylbenzene. The total amount of aromatics in the products was 80 % by using this catalyst. Our results suggest that catalyst synthesized by using sonochemistry shows better production yield toward hydrocarbons by affecting the distribution of active sites on the surface of the ZSM-5.
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12
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Saikia S, Puri K, Borah R. Supported dual-acidic 1,3-disulfoimidazolium chlorozincate@HZSM-5 as a promising heterogeneous catalyst for synthesis of indole derivatives. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Susmita Saikia
- Department of Chemical Sciences; Tezpur University; Napaam Tezpur 784028 India
| | - Krishna Puri
- Department of Chemical Sciences; Tezpur University; Napaam Tezpur 784028 India
| | - Ruli Borah
- Department of Chemical Sciences; Tezpur University; Napaam Tezpur 784028 India
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13
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Kianfar E. Synthesis and Characterization of AlPO4/ZSM-5 Catalyst for Methanol Conversion to Dimethyl Ether. RUSS J APPL CHEM+ 2018. [DOI: 10.1134/s1070427218100208] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Haltenort P, Hackbarth K, Oestreich D, Lautenschütz L, Arnold U, Sauer J. Heterogeneously catalyzed synthesis of oxymethylene dimethyl ethers (OME) from dimethyl ether and trioxane. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.02.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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15
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Austin D, Wang A, Harrhy JH, Mao X, Zeng H, Song H. Catalytic aromatization of acetone as a model compound for biomass-derived oil under a methane environment. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01544a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The upgrading of acetone as a biomass-derived liquid into valuable chemicals could lead to a cost-effective and sustainable replacement for petroleum-derived products.
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Affiliation(s)
- Danielle Austin
- Department of Chemical and Petroleum Engineering
- University of Calgary
- Calgary
- Canada
| | - Aiguo Wang
- Department of Chemical and Petroleum Engineering
- University of Calgary
- Calgary
- Canada
| | - Jonathan H. Harrhy
- Department of Chemical and Petroleum Engineering
- University of Calgary
- Calgary
- Canada
| | - Xiaohui Mao
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering
- University of Alberta
- Edmonton
- Canada
| | - Hua Song
- Department of Chemical and Petroleum Engineering
- University of Calgary
- Calgary
- Canada
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16
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Serrano DP, Melero JA, Morales G, Iglesias J, Pizarro P. Progress in the design of zeolite catalysts for biomass conversion into biofuels and bio-based chemicals. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2017. [DOI: 10.1080/01614940.2017.1389109] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- David P. Serrano
- Thermochemical Processes Unit, IMDEA Energy Institute, Móstoles, Madrid, Spain
- Chemical and Environmental Engineering Group, ESCET, Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - Juan A. Melero
- Chemical and Environmental Engineering Group, ESCET, Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - Gabriel Morales
- Chemical and Environmental Engineering Group, ESCET, Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - Jose Iglesias
- Chemical and Environmental Engineering Group, ESCET, Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - Patricia Pizarro
- Thermochemical Processes Unit, IMDEA Energy Institute, Móstoles, Madrid, Spain
- Chemical and Environmental Engineering Group, ESCET, Rey Juan Carlos University, Móstoles, Madrid, Spain
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17
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Mameda N, Gajula KS, Peraka S, Kodumuri S, Chevella D, Banothu R, Amrutham V, Nama N. One-pot synthesis of 1,3-diaryl but-1-enes from 1-arylethanols over Snβ zeolite. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2016.11.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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18
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Mameda N, Peraka S, Kodumuri S, Chevella D, Marri MR, Aytam HP, Nama N. Chemo- and regioselective head-to-tail heterodimerization of vinylarenes with 1,1-diphenylethene over a heterogeneous catalyst (Snβ zeolite). RSC Adv 2016. [DOI: 10.1039/c5ra24948a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Highly chemo- and regioselective heterodimerization of vinylarenes with 1,1-diphenylethene to form the corresponding alkenes using heterogeneous catalyst (Snβ zeolite) is reported for the first time.
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Affiliation(s)
- Naresh Mameda
- Academy of Scientific and Innovative Research
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
- I&PC Division
| | - Swamy Peraka
- Academy of Scientific and Innovative Research
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
- I&PC Division
| | - Srujana Kodumuri
- I&PC Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Durgaiah Chevella
- I&PC Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | | | - Hari Padmasri Aytam
- Department of Chemistry
- University College for Women
- Osmania University
- Hyderabad 500095
- India
| | - Narender Nama
- Academy of Scientific and Innovative Research
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
- I&PC Division
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19
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Bala DD, Chidambaram D. Production of renewable aviation fuel range alkanes from algae oil. RSC Adv 2016. [DOI: 10.1039/c5ra23145k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Jet fuels produced from sources other than petroleum are receiving considerable attention since they offer the potential to diversify energy supplies while mitigating the net environmental impact of aviation.
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Affiliation(s)
| | - Dev Chidambaram
- Chemical and Materials Engineering
- University of Nevada
- Reno
- USA
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20
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21
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Kubička D, Kikhtyanin O. Opportunities for zeolites in biomass upgrading—Lessons from the refining and petrochemical industry. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.07.043] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Zhou L, Li S, Su Y, Li B, Deng F. Paramagnetic relaxation enhancement solid-state NMR studies of heterogeneous catalytic reaction over HY zeolite using natural abundance reactant. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2015; 66-67:29-32. [PMID: 25616847 DOI: 10.1016/j.ssnmr.2014.12.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/20/2014] [Accepted: 12/29/2014] [Indexed: 06/04/2023]
Abstract
Paramagnetic relaxation enhancement solid-state NMR (PRE ssNMR) technique was used to investigate catalytic reaction over zeolite HY. After introducing paramagnetic Cu(II) ions into the zeolite, the enhancement of longitudinal relaxation rates of nearby nuclei, i.e.(29)Si of the framework and (13)C of the absorbents, was measured. It was demonstrated that the PRE ssNMR technique facilitated the fast acquisition of NMR signals to monitor the heterogeneous catalytic reaction (such as acetone to hydrocarbon) using natural abundance reactants.
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Affiliation(s)
- Lei Zhou
- National Center 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
| | - Shenhui Li
- National Center 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.
| | - Yongchao Su
- Department of Chemistry and Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Bojie Li
- National Center 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 Center 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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23
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Marakatti VS, Halgeri AB. Metal ion-exchanged zeolites as highly active solid acid catalysts for the green synthesis of glycerol carbonate from glycerol. RSC Adv 2015. [DOI: 10.1039/c4ra16052e] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The application of metal ion-exchanged zeolites as highly efficient catalysts for the synthesis of glycerol carbonate from glycerol carbonylation is reported.
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Affiliation(s)
- Vijaykumar S. Marakatti
- Materials Science Division
- Poornaprajna Institute of Scientific Research (PPISR)
- Bangalore-562110
- India
| | - Anand B. Halgeri
- Materials Science Division
- Poornaprajna Institute of Scientific Research (PPISR)
- Bangalore-562110
- India
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24
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Witsuthammakul A, Sooknoi T. Selective hydrodeoxygenation of bio-oil derived products: ketones to olefins. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00367a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A catalytic system designed for mild hydrodeoxygenation of ketones to olefins was investigated. Hydrogenation of ketones to alcohols was accomplished over metal catalysts and the alcohol produced was then dehydrated over acidic catalysts.
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Affiliation(s)
- Ayut Witsuthammakul
- Department of Chemistry
- Faculty of Science
- King Mongkut's Institute of Technology Ladkrabang
- Chalongkrung Road
- Bangkok 10520
| | - Tawan Sooknoi
- Department of Chemistry
- Faculty of Science
- King Mongkut's Institute of Technology Ladkrabang
- Chalongkrung Road
- Bangkok 10520
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Wang S, Cai Q, Wang X, Zhang L, Wang Y, Luo Z. Biogasoline production by co-cracking of model compound mixture of bio-oil and ethanol over HSZM-5. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(14)60046-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Marakatti VS, Halgeri AB, Shanbhag GV. Metal ion-exchanged zeolites as solid acid catalysts for the green synthesis of nopol from Prins reaction. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00596a] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The application of metal ion-exchanged zeolites as highly active and selective catalysts for the synthesis of nopol from the Prins reaction of β-pinene is reported.
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Affiliation(s)
- Vijaykumar S. Marakatti
- Materials Science Division
- Poornaprajna Institute of Scientific Research (PPISR)
- Bangalore-562110, India
| | - Anand B. Halgeri
- Materials Science Division
- Poornaprajna Institute of Scientific Research (PPISR)
- Bangalore-562110, India
| | - Ganapati V. Shanbhag
- Materials Science Division
- Poornaprajna Institute of Scientific Research (PPISR)
- Bangalore-562110, India
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27
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Blechle JM, Cuddy MF, Fisher ER. Effect of ion energies on the surface interactions of NO formed in nitrogen oxide plasma systems. J Phys Chem A 2013; 117:1204-15. [PMID: 23163588 DOI: 10.1021/jp305331x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The contributions of various gas-phase species in surface reactions are of significant value to assess and improve catalytic substrates for abatement of vehicular emissions. The impact of ions on surface scatter of NO radicals is investigated with an aim toward improving and tailoring surfaces for the reduction or removal of nitrogen oxide (N(x)O(y)) species via inductively coupled plasmas (ICPs). Nascent ions are monitored via mass spectrometry and energy analysis for a variety of N(x)O(y) precursor gases. The total average ion energy (<E(i)>(total)) determined for all ions within each respective plasma system shows a strong positive correlation with applied rf power and a negative correlation with system pressure. The imaging of radicals interacting with surfaces (IRIS) technique was used to determine the role ions play in the surface scatter of NO radicals. The net effect of ions on substrate processing is largely dependent upon <E(i)>(total). Scatter coefficients (S), determined for ion-limited and ion-rich plasma systems were used to correlate <E(i)>(total) and scatter. The resultant effect is that ions play a substantial role in scatter of NO only when <E(i)>(total) > ~50 eV. The majority of systems studied contained ions below this energy threshold, suggesting knowledge of ion energies is integral to appropriately controlling the chemistry occurring between the gas-phase and surface.
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Affiliation(s)
- Joshua M Blechle
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, USA
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28
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Tago T, Konno H, Nakasaka Y, Masuda T. Size-Controlled Synthesis of Nano-Zeolites and Their Application to Light Olefin Synthesis. CATALYSIS SURVEYS FROM ASIA 2012. [DOI: 10.1007/s10563-012-9141-4] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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