Effects of Proximity-Dependent Metal Migration on Bifunctional Composites Catalyzed Syngas to Olefins DOI
Yi Ding, Feng Jiao, Xiulian Pan

и другие.

ACS Catalysis, Год журнала: 2021, Номер 11(15), С. 9729 - 9737

Опубликована: Июль 19, 2021

The proximity of the oxide-zeolite bifunctional catalysts plays a crucial role in syngas conversion to light olefins. However, its underlying mechanism is not well understood and optimal yet be identified. Herein, we take ZnCrOx-SAPO-34 MnOx-SAPO-34 as examples show that reaction benefits from shortened with granules decreasing micrometer size due reduced mass transport limitation. CO reaches 60.0%, olefin selectivity 75.5%, space time yield olefins 0.24 g·gcat–1·h–1 over ZnCrOx-SAPO-34. at nanoscale proximity, an interaction may develop between different active sites migration metal species addition intermediate exchange, which could modify their properties significantly. For instance, zinc migrate SAPO-34 form Zn-OH preferably Brønsted acid under conditions, leads deteriorating enhanced hydrogenation. This can alleviated zeotypes containing less sites. By contrast, MnOx does exhibits feature "the closer, better" MnOx-SAPO-34. These findings are essential for further development analogous catalysts.

Язык: Английский

Fischer–Tropsch synthesis to olefins boosted by MFI zeolite nanosheets DOI
Chengtao Wang, Fang Wei, Zhiqiang Liu

и другие.

Nature Nanotechnology, Год журнала: 2022, Номер 17(7), С. 714 - 720

Опубликована: Июль 1, 2022

Язык: Английский

Процитировано

95

Heterogeneous Catalysis for CO2 Conversion into Chemicals and Fuels DOI Creative Commons
Dunfeng Gao, Wanjun Li, Hanyu Wang

и другие.

Transactions of Tianjin University, Год журнала: 2022, Номер 28(4), С. 245 - 264

Опубликована: Авг. 1, 2022

Abstract Catalytic conversion of CO 2 into chemicals and fuels is a viable method to reduce carbon emissions achieve neutrality. Through thermal catalysis, electrocatalysis, photo(electro)catalysis, can be converted wide range valuable products, including CO, formic acid, methanol, methane, ethanol, acetic propanol, light olefins, aromatics, gasoline, as well fine chemicals. In this mini-review, we summarize the recent progress in heterogeneous catalysis for highlight some representative studies different routes. The structure–performance correlations typical catalytic materials used reactions have been revealed by combining advanced situ/operando spectroscopy microscopy characterizations density functional theory calculations. selectivity toward single reduction product/fraction should further improved at an industrially relevant rate with considerable stability future. Graphical

Язык: Английский

Процитировано

88

Recent advances on syngas conversion targeting light olefins DOI

Shangqing Zhao,

Haiwei Li, Bo Wang

и другие.

Fuel, Год журнала: 2022, Номер 321, С. 124124 - 124124

Опубликована: Апрель 8, 2022

Язык: Английский

Процитировано

87

Highly selective hydrogenation of CO2 to propane over GaZrOx/H-SSZ-13 composite DOI
Sen Wang, Li Zhang, Pengfei Wang

и другие.

Nature Catalysis, Год журнала: 2022, Номер 5(11), С. 1038 - 1050

Опубликована: Ноя. 17, 2022

Язык: Английский

Процитировано

81

Tandem catalysis for CO2 conversion to higher alcohols: A review DOI
Yiming He,

Fabian Müller,

Regina Palkovits

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 345, С. 123663 - 123663

Опубликована: Янв. 2, 2024

Язык: Английский

Процитировано

50

Selectivity Control by Relay Catalysis in CO and CO2 Hydrogenation to Multicarbon Compounds DOI
Kang Cheng, Yubing Li, Jincan Kang

и другие.

Accounts of Chemical Research, Год журнала: 2024, Номер 57(5), С. 714 - 725

Опубликована: Фев. 13, 2024

ConspectusThe hydrogenative conversion of both CO and CO2 into high-value multicarbon (C2+) compounds, such as olefins, aromatic hydrocarbons, ethanol, liquid fuels, has attracted much recent attention. The hydrogenation is related to the chemical utilization various carbon resources including shale gas, biomass, coal, carbon-containing wastes via syngas (a mixture H2 CO), while by green chemicals fuels would contribute recycling for neutrality. state-of-the-art technologies CO/CO2 C2+ compounds primarily rely on a direct route Fischer–Tropsch (FT) synthesis an indirect two methanol-mediated processes, i.e., methanol from compounds. be more energy- cost-efficient owing reduced operation units, but product selectivity FT limited Anderson–Schulz–Flory (ASF) distribution. Selectivity control compound one most challenging goals in field C1 chemistry, chemistry transformation one-carbon (C1) molecules.We have developed relay-catalysis strategy solve challenge arising complicated reaction network involving multiple intermediates channels, which inevitably lead side reactions byproducts over conventional heterogeneous catalyst. core relay catalysis design single tandem-reaction channel, can target controllably, choosing appropriate (or intermediate products) steps connecting these intermediates, arranging optimized yet matched catalysts implement like relay. This Account showcases representative systems our group past decade lower (C2–C4) aromatics, oxygenates with breaking limitation catalysts. These are typically composed metal or oxide CO/CO2/H2 activation zeolite C–C coupling reconstruction, well third even fourth catalyst component other functions if necessary. mechanisms oxides, distinct that transition noble surfaces, discussed emphasis role oxygen vacancies. Zeolites catalyze (including hydrocracking/isomerization heavier methanol-to-hydrocarbon reactions, carbonylation methanol/dimethyl ether) system, mainly controlled Brønsted acidity shape-selectivity confinement effect zeolites. We demonstrate thermodynamic/kinetic matching steps, proximity spatial arrangement components, transportation intermediates/products sequence key issues guiding selection each construction efficient system. Our methodology also useful molecules coupling, inspiring efforts toward precision catalysis.

Язык: Английский

Процитировано

44

Rational Control of Oxygen Vacancy Density in In2O3 to Boost Methanol Synthesis from CO2 Hydrogenation DOI

Wenhang Wang,

Kaixuan Huo,

Yang Wang

и другие.

ACS Catalysis, Год журнала: 2024, Номер 14(13), С. 9887 - 9900

Опубликована: Июнь 18, 2024

Oxygen vacancies (Ov) in reducible metal oxides are the vital active sites for methanol synthesis via a CO2 hydrogenation technology. However, relationship between density of Ov and performance is still ambiguous, it shows lack versatile strategy to precisely tailor number Ov. In this study, with In2O3 as representatively catalytic component, functional theory computation confirms that property, especially density, pivotal enhancing selectivity by suppressing undesirable reverse water–gas shift reaction CO formation, which attributed unique electronic atoms around To verify theoretical results, we report protocol optimize concentration on sequential carbonization oxidation (SCO) treatments In-based metal–organic frameworks, during consumption carbon species structural reconstruction crystal regulated particle size varying temperature. The In2O3-5 catalyst carbonized oxidized at 500 °C exhibits good (72.3%) conversion 9.9% under 330 °C, 3 MPa, high space velocity 12,000 L–1 kgcat–1 h–1. Multiple situ characterizations clarify proposed property regulating SCO convenient boost altering process HCOO* intermediate-dominated pathway. Our work provides design will shed light rational oxide-based catalysts controllable density.

Язык: Английский

Процитировано

18

Selective Conversion of CO2 into Propene and Butene DOI Creative Commons
Sen Wang, Li Zhang, Wenyu Zhang

и другие.

Chem, Год журнала: 2020, Номер 6(12), С. 3344 - 3363

Опубликована: Окт. 20, 2020

Язык: Английский

Процитировано

99

A review on CO2 hydrogenation to lower olefins: Understanding the structure-property relationships in heterogeneous catalytic systems DOI
Opeyemi A. Ojelade, Sharif F. Zaman

Journal of CO2 Utilization, Год журнала: 2021, Номер 47, С. 101506 - 101506

Опубликована: Март 21, 2021

Язык: Английский

Процитировано

94

The promoting role of Ga in ZnZrOx solid solution catalyst for CO2 hydrogenation to methanol DOI
Feng Sha, Chizhou Tang, Shan Tang

и другие.

Journal of Catalysis, Год журнала: 2021, Номер 404, С. 383 - 392

Опубликована: Окт. 7, 2021

Язык: Английский

Процитировано

93