1
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Cleary SR, Starace AK, Curran-Velasco CC, Ruddy DA, McGuirk CM. The Overlooked Potential of Sulfated Zirconia: Reexamining Solid Superacidity Toward the Controlled Depolymerization of Polyolefins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6612-6653. [PMID: 38509763 DOI: 10.1021/acs.langmuir.3c03966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Closed-loop recycling via an efficient chemical process can help alleviate the global plastic waste crisis. However, conventional depolymerization methods for polyolefins, which compose more than 50% of plastics, demand high temperatures and pressures, employ precious noble metals, and/or yield complex mixtures of products limited to single-use fuels or oils. Superacidic forms of sulfated zirconia (SZrO) with Hammet Acidity Functions (H0) ≤ - 12 (i.e., stronger than 100% H2SO4) are industrially deployed heterogeneous catalysts capable of activating hydrocarbons under mild conditions and are shown to decompose polyolefins at temperatures near 200 °C and ambient pressure. Additionally, confinement of active sites in porous supports is known to radically increase selectivity, coking and sintering resistance, and acid site activity, presenting a possible approach to low-energy polyolefin depolymerization. However, a critical examination of the literature on SZrO led us to a surprising conclusion: despite 40 years of catalytic study, engineering, and industrial use, the surface chemistry of SZrO is poorly understood. Ostensibly spurred by SZrO's impressive catalytic activity, the application-driven study of SZrO has resulted in deleterious ambiguity in requisite synthetic conditions for superacidity and insufficient characterization of acidity, porosity, and active site structure. This ambiguity has produced significant knowledge gaps surrounding the synthesis, structure, and mechanisms of hydrocarbon activation for optimized SZrO, stunting the potential of this catalyst in olefin cracking and other industrially relevant reactions, such as isomerization, esterification, and alkylation. Toward mitigating these long extant issues, we herein identify and highlight these current shortcomings and knowledge gaps, propose explicit guidelines for characterization of and reporting on characterization of solid acidity, and discuss the potential of pore-confined superacids in the efficient and selective depolymerization of polyolefins.
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Affiliation(s)
- Scott R Cleary
- Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Anne K Starace
- National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Caleb C Curran-Velasco
- Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Daniel A Ruddy
- National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - C Michael McGuirk
- Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
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2
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Theoretical studies on structure and dynamics of anatase TiO2 (101)/H2SO4/H2O interface in the early stage of titania sulfation. Struct Chem 2022. [DOI: 10.1007/s11224-022-01946-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Identification of CO2 adsorption sites on MgO nanosheets by solid-state nuclear magnetic resonance spectroscopy. Nat Commun 2022; 13:707. [PMID: 35121754 PMCID: PMC8817041 DOI: 10.1038/s41467-022-28405-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 01/21/2022] [Indexed: 11/21/2022] Open
Abstract
The detailed information on the surface structure and binding sites of oxide nanomaterials is crucial to understand the adsorption and catalytic processes and thus the key to develop better materials for related applications. However, experimental methods to reveal this information remain scarce. Here we show that 17O solid-state nuclear magnetic resonance (NMR) spectroscopy can be used to identify specific surface sites active for CO2 adsorption on MgO nanosheets. Two 3-coordinated bare surface oxygen sites, resonating at 39 and 42 ppm, are observed, but only the latter is involved in CO2 adsorption. Double resonance NMR and density functional theory (DFT) calculations results prove that the difference between the two species is the close proximity to H, and CO2 does not bind to the oxygen ions with a shorter O···H distance of approx. 3.0 Å. Extensions of this approach to explore adsorption processes on other oxide materials can be readily envisaged. The characterization of the surface structure and binding sites of materials is crucial for designing advanced materials for adsorption processes. Here, the authors use 17O solid-state nuclear magnetic resonance spectroscopy to identify specific CO2 adsorption sites on MgO nanosheets.
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4
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Huang D, Chen S, Ma S, Chen X, Ren Y, Wang M, Ye L, Zhang L, Chen X, Liu ZP, Yue B, He H. Determination of acid structures on the surface of sulfated monoclinic and tetragonal zirconia through experimental and theoretical approaches. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01860d] [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
The acid structures on both tetragonal and monoclinic sulfated zirconia were studied and successfully proposed through experimental and theoretical approaches.
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Affiliation(s)
- Daofeng Huang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China
| | - Siyue Chen
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Sicong Ma
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xin Chen
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China
| | - Yuanhang Ren
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China
| | - Meiyin Wang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China
| | - Lin Ye
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China
| | - Li Zhang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China
| | - Xueying Chen
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China
| | - Zhi-Pan Liu
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Key Laboratory of Computational Physical Science, Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Bin Yue
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China
| | - Heyong He
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, P. R. China
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5
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Chen J, Wu XP, Hope MA, Lin Z, Zhu L, Wen Y, Zhang Y, Qin T, Wang J, Liu T, Xia X, Wu D, Gong XQ, Tang W, Ding W, Liu X, Chen L, Grey CP, Peng L. Surface differences of oxide nanocrystals determined by geometry and exogenously coordinated water molecules. Chem Sci 2022; 13:11083-11090. [DOI: 10.1039/d2sc03885d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/18/2022] [Indexed: 11/21/2022] Open
Abstract
Both atomic geometry and the influence of surroundings (e.g., exogenously coordinated water) are key issues for determining the chemical environment of oxide surfaces, whereas the latter is usually ignored and should be considered in future studies.
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Affiliation(s)
- Junchao Chen
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, In situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xin-Ping Wu
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry, Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Michael A. Hope
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - Zhiye Lin
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Lei Zhu
- State Key Laboratory of Space Power Technology, Shanghai Institute of Space Power-Sources (SISP), Shanghai Academy of Spaceflight Technology, Shanghai 200245, China
| | - Yujie Wen
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Yixiao Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, In situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Tian Qin
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, In situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jia Wang
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry, Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Tao Liu
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, Department of Chemistry, Tongji University, Shanghai 200092, China
| | - Xifeng Xia
- Analysis and Testing Center, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Di Wu
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing 210023, China
| | - Xue-Qing Gong
- Key Laboratory for Advanced Materials, Centre for Computational Chemistry, Research Institute of Industrial Catalysis, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Weiping Tang
- State Key Laboratory of Space Power Technology, Shanghai Institute of Space Power-Sources (SISP), Shanghai Academy of Spaceflight Technology, Shanghai 200245, China
| | - Weiping Ding
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
| | - Xi Liu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, In situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Liwei Chen
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, In situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
- i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
| | - Clare P. Grey
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - Luming Peng
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China
- Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing 210093, China
- Frontiers Science Center for Critical Earth Material Cycling (FSC-CEMaC), Nanjing University, Nanjing, Jiangsu, 210023, China
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6
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Zhang W, Lin Z, Li H, Wang F, Wen Y, Xu M, Wang Y, Ke X, Xia X, Chen J, Peng L. Surface acidity of tin dioxide nanomaterials revealed with 31P solid-state NMR spectroscopy and DFT calculations. RSC Adv 2021; 11:25004-25009. [PMID: 35481043 PMCID: PMC9037001 DOI: 10.1039/d1ra02782d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/13/2021] [Indexed: 12/29/2022] Open
Abstract
Tin dioxide (SnO2) nanomaterials are important acid catalysts. It is therefore crucial to obtain details about the surface acidic properties in order to develop structure–property relationships. Herein, we apply 31P solid-state NMR spectroscopy combined with a trimethylphosphine (TMP) probe molecule, to study the facet-dependent acidity of SnO2 nanosheets and nanoshuttles. With the help of density functional theory calculations, we show that the tin cations exposed on the surfaces are Lewis acid sites and their acid strengths rely on surface geometries. As a result, the (001), (101), (110), and (100) facets can be differentiated by the 31P NMR shifts of adsorbed TMP molecules, and their fractions in different nanomaterials can be extracted according to deconvoluted 31P NMR resonances. The results provide new insights on nanosized oxide acid catalysts. Facet-dependent acidity of SnO2 nanosheets and nanoshuttles is revealed with TMP-assisted 31P solid-state NMR spectroscopy and DFT calculations.![]()
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Affiliation(s)
- Wenjing Zhang
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University 163 Xianlin Road Nanjing 210023 China
| | - Zhiye Lin
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University 163 Xianlin Road Nanjing 210023 China
| | - Hanxiao Li
- Chinesisch-Deutsche Technische Fakultät, Qingdao University of Science and Technology 99 Songling Road Qingdao 266061 China
| | - Fang Wang
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University 163 Xianlin Road Nanjing 210023 China
| | - Yujie Wen
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University 163 Xianlin Road Nanjing 210023 China
| | - Meng Xu
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University 163 Xianlin Road Nanjing 210023 China
| | - Yang Wang
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University 163 Xianlin Road Nanjing 210023 China
| | - Xiaokang Ke
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University 163 Xianlin Road Nanjing 210023 China
| | - Xifeng Xia
- Analysis and Testing Center, Nanjing University of Science and Technology Nanjing 210094 China
| | - Junchao Chen
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University 163 Xianlin Road Nanjing 210023 China
| | - Luming Peng
- Key Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University 163 Xianlin Road Nanjing 210023 China
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7
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Lv X, Cai S, Chen J, Yan D, Jiang M, Chen J, Jia H. Tuning the degradation activity and pathways of chlorinated organic pollutants over CeO 2 catalyst with acid sites: synergistic effect of Lewis and Brønsted acid sites. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00626f] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The synergistic effect of Lewis and Brønsted acid sites can promote the effective degradation of chlorobenzene following the hydrolysis pathway of producing less toxic by-products.
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Affiliation(s)
- Xuelong Lv
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Songcai Cai
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Jin Chen
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Dongxu Yan
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Mingzhu Jiang
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
| | - Jing Chen
- University of Chinese Academy of Sciences
- Beijing
- China
- Xiamen Institute of Rare-earth Materials
- Haixi Institutes
| | - Hongpeng Jia
- CAS Center for Excellence in Regional Atmospheric Environment
- and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment, Chinese Academy of Sciences
- Xiamen
- China
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8
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Chen Y, Gong K, Jiao F, Pan X, Hou G, Si R, Bao X. C−C Bond Formation in Syngas Conversion over Zinc Sites Grafted on ZSM‐5 Zeolite. Angew Chem Int Ed Engl 2020; 59:6529-6534. [DOI: 10.1002/anie.201912869] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/23/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Yuxiang Chen
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ke Gong
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Feng Jiao
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Xiulian Pan
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Guangjin Hou
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Rui Si
- Shanghai Synchrotron Radiation FacilityShanghai Institute of Applied PhysicsChinese Academy of Sciences Shanghai 201204 China
| | - Xinhe Bao
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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9
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Chen Y, Gong K, Jiao F, Pan X, Hou G, Si R, Bao X. C−C Bond Formation in Syngas Conversion over Zinc Sites Grafted on ZSM‐5 Zeolite. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912869] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yuxiang Chen
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ke Gong
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Feng Jiao
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Xiulian Pan
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Guangjin Hou
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Rui Si
- Shanghai Synchrotron Radiation FacilityShanghai Institute of Applied PhysicsChinese Academy of Sciences Shanghai 201204 China
| | - Xinhe Bao
- State Key Laboratory of CatalysisNational Laboratory for Clean Energy2011-Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
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10
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Tian F, Xu B, Li Y, Deng J, Zhang H, Peng R. A Highly Active, Readily Synthesized and Easily Separated Graphene Oxide (GO)/Polyethersulfone (PES) Catalytic Membrane for Biodiesel Production. ChemistrySelect 2020. [DOI: 10.1002/slct.201903846] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Fengyu Tian
- School of Resource and Environmental Sciences, Shenzhen Research InstituteWuhan University Wuhan 430072 P. R. China
| | - Baiqing Xu
- Sinopec Dalian Research Institute of Petroleum and Petrochemicals Dalian 116045 P. R. China
| | - Yingjie Li
- Shenshan Smart City Research Institute Co., Ltd Shenzhen 518200 P. R. China
| | - Jie Deng
- Faculty of Science and EngineeringThe University of Nottingham Ningbo China Ningbo 325100 P. R. China
| | - Honglei Zhang
- School of Resource and Environmental Sciences, Shenzhen Research InstituteWuhan University Wuhan 430072 P. R. China
| | - Ruichao Peng
- College of Chemistry & Molecular SciencesWuhan University Wuhan 430072 P. R. China
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11
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Wu Y, Chen X, Huang D, Zhang L, Ren Y, Tang G, Chen X, Yue B, He H. A study on the acidity of sulfated CuO layers grown by surface reconstruction of Cu 2O with specific exposed facets. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00892c] [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
Surface reconstruction and sulfation improve the acidity of Cu2O, and moderate Lewis acid sites are the active sites in Pechmann condensation.
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Affiliation(s)
- Yanan Wu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Xin Chen
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Daofeng Huang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Li Zhang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Yuanhang Ren
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Gangfeng Tang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Xueying Chen
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Bin Yue
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- P. R. China
| | - Heyong He
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Collaborative Innovation Center of Chemistry for Energy Materials
- Fudan University
- Shanghai 200433
- P. R. China
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12
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Zhao J, Tu C, Sun W, Xia H, Zhang H, Dai Q, Wang X. The catalytic combustion of CH2Cl2 over SO42−–TixSn1−x modified with Ru. Catal Sci Technol 2020. [DOI: 10.1039/c9cy01831j] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ru/SO42−–TixSn1−x presented high activity and selectivity due to the stable oxidization activity of Ru and super-strong acidity from SO42−.
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Affiliation(s)
- Jian Zhao
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Chensheng Tu
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Wei Sun
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Hangqi Xia
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Hao Zhang
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Qiguang Dai
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Xingyi Wang
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- PR China
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13
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Busca G, Gervasini A. Solid acids, surface acidity and heterogeneous acid catalysis. ADVANCES IN CATALYSIS 2020. [DOI: 10.1016/bs.acat.2020.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Wu Y, Huang D, Fu Y, Zhang L, Liu S, Tang G, Ren Y, Ye L, Chen X, Yue B, He H. The Effects of Exposed Specific Facets and Sulfation on the Surface Acidity of Cu 2 O Solids. Chemistry 2019; 25:14771-14774. [PMID: 31529655 DOI: 10.1002/chem.201903231] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/16/2019] [Indexed: 11/07/2022]
Abstract
Cuprous oxide microcrystals with {111}, {111}/{100}, and {100} exposed facets were synthesized. 31 P MAS NMR using trimethylphosphine as the probe molecule was employed to study the acidic properties of samples. It was found that the total acidic density of samples increases evidently after sulfation compared with the pristine cuprous oxide microcrystals. During sulfation, new {100} facets are formed at the expense of {111} facets and lead to the generation of two Lewis acid sites due to the different binding states of SO4 2- on {111} and {100} facets. Moreover, DFT calculation was used to illustrate the binding models of SO4 2- on {111} and {100} facets. Also, a Pechmann condensation reaction was applied to study the acidic catalytic activity of these samples. It was found that the sulfated {111} facet has better activity due to its higher Lewis acid density compared with the sulfated {100} facet.
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Affiliation(s)
- Yanan Wu
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Daofeng Huang
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Yingyi Fu
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Li Zhang
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Shixi Liu
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan, 650091, P. R. China
| | - Gangfeng Tang
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Yuanhang Ren
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Lin Ye
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Xueying Chen
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Bin Yue
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
| | - Heyong He
- Department of Chemistry and, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, P. R. China
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15
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Wu Y, Fu Y, Zhang L, Ren Y, Chen X, Yue B, He H. Study of Oxygen Vacancies on Different Facets of Anatase TiO
2. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900188] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yanan Wu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy MaterialsFudan University Shanghai 200433 China
| | - Yingyi Fu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy MaterialsFudan University Shanghai 200433 China
| | - Li Zhang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy MaterialsFudan University Shanghai 200433 China
| | - Yuanhang Ren
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy MaterialsFudan University Shanghai 200433 China
| | - Xueying Chen
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy MaterialsFudan University Shanghai 200433 China
| | - Bin Yue
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy MaterialsFudan University Shanghai 200433 China
| | - Heyong He
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy MaterialsFudan University Shanghai 200433 China
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16
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Li L, Yue H, Zhang S, Huang Y, Zhang W, Wu P, Ji Y, Huo F. Solving the Water Hypersensitive Challenge of Sulfated Solid Superacid in Acid-Catalyzed Reactions. ACS APPLIED MATERIALS & INTERFACES 2019; 11:9919-9924. [PMID: 30785722 DOI: 10.1021/acsami.8b20506] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In the past decades, water tolerance has always been the long-pending key issue of sulfated solid superacids (SO42-/M xO y) toward industrial applications. Herein, we report a strategy for the facile coating of a thick tunable hydrophobic layer over SO42-/M xO y, which can significantly improve water tolerance, with negligible inhibition on the catalytic performance of SO42-/M xO y. Even after being directly immersed in water, the hydrophobic SO42-/M xO y can still maintain above 90% of original catalytic activity, whereas pristine SO42-/M xO y and control samples are almost completely deactivated. This strategy opens a new route to enhance the water tolerance of sulfated solid superacids.
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Affiliation(s)
- Licheng Li
- College of Chemical Engineering , Nanjing Forestry University , Nanjing 210037 , P. R. China
- Institute of Advanced Materials (IAM) , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , P. R. China
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China
| | - Haiqin Yue
- College of Chemical Engineering , Nanjing Forestry University , Nanjing 210037 , P. R. China
| | - Suoying Zhang
- Institute of Advanced Materials (IAM) , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , P. R. China
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China
| | - Yaobing Huang
- College of Chemical Engineering , Nanjing Forestry University , Nanjing 210037 , P. R. China
| | - Weina Zhang
- Institute of Advanced Materials (IAM) , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , P. R. China
| | - Peng Wu
- Institute of Advanced Materials (IAM) , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , P. R. China
| | - Yongxin Ji
- College of Chemical Engineering , Nanjing Forestry University , Nanjing 210037 , P. R. China
| | - Fengwei Huo
- Institute of Advanced Materials (IAM) , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , P. R. China
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17
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Zhang JJ, Wang WY, Wang GJ, Song H, Wang L. Preparation of Solid Superacid Catalysts and Oil Oxidative Desulfurization Using K2FeO4. RUSS J APPL CHEM+ 2018. [DOI: 10.1134/s1070427218090148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Du JH, Peng L. Recent progress in investigations of surface structure and properties of solid oxide materials with nuclear magnetic resonance spectroscopy. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2018.02.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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19
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Chen P, Cai Y, Wang J, Wang K, Tao Y, Xue J, Wang H. Preparation of protonized titanate nanotubes/Fe3O4/TiO2 ternary composites and dye self-sensitization for visible-light-driven photodegradation of Rhodamine B. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2017.12.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Liu F, Wang T, Zheng Y, Wang J. Synergistic effect of Brønsted and Lewis acid sites for the synthesis of polyoxymethylene dimethyl ethers over highly efficient SO 4 2− /TiO 2 catalysts. J Catal 2017. [DOI: 10.1016/j.jcat.2017.08.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Zheng A, Liu SB, Deng F. 31P NMR Chemical Shifts of Phosphorus Probes as Reliable and Practical Acidity Scales for Solid and Liquid Catalysts. Chem Rev 2017; 117:12475-12531. [DOI: 10.1021/acs.chemrev.7b00289] [Citation(s) in RCA: 196] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anmin Zheng
- State
Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,
National Center for Magnetic Resonance in Wuhan, Key Laboratory of
Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences, Wuhan 430071, China
| | - Shang-Bin Liu
- Institute
of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
| | - Feng Deng
- State
Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,
National Center for Magnetic Resonance in Wuhan, Key Laboratory of
Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences, Wuhan 430071, China
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22
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Peng YK, Hu Y, Chou HL, Fu Y, Teixeira IF, Zhang L, He H, Tsang SCE. Mapping surface-modified titania nanoparticles with implications for activity and facet control. Nat Commun 2017; 8:675. [PMID: 28939869 PMCID: PMC5610198 DOI: 10.1038/s41467-017-00619-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 07/13/2017] [Indexed: 12/03/2022] Open
Abstract
The use of surface-directing species and surface additives to alter nanoparticle morphology and physicochemical properties of particular exposed facets has recently been attracting significant attention. However, challenges in their chemical analysis, sometimes at trace levels, and understanding their roles to elucidate surface structure–activity relationships in optical (solar cells) or (photo)catalytic performance and their removal are significant issues that remain to be solved. Here, we show a detailed analysis of TiO2 facets promoted with surface species (OH, O, SO4, F) with and without post-treatments by 31P adsorbate nuclear magnetic resonance, supported by a range of other characterization tools. We demonstrate that quantitative evaluations of the electronic and structural effects imposed by these surface additives and their removal mechanisms can be obtained, which may lead to the rational control of active TiO2 (001) and (101) facets for a range of applications. Metal oxide nanocrystals can be grown with different facets exposed to give variations in reactivity, but the chemical state of these surfaces is not clear. Here, the authors make use of a phosphine probe molecule allowing the differences in surface chemistry to be mapped by NMR spectroscopy.
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Affiliation(s)
- Yung-Kang Peng
- The Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, UK
| | - Yichen Hu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, People's Republic of China
| | - Hung-Lung Chou
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, 10617, Taiwan
| | - Yingyi Fu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, People's Republic of China
| | - Ivo F Teixeira
- The Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, UK
| | - Li Zhang
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, People's Republic of China
| | - Heyong He
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, People's Republic of China
| | - Shik Chi Edman Tsang
- The Wolfson Catalysis Centre, Department of Chemistry, University of Oxford, Oxford, OX1 3QR, UK.
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23
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Zhang H, Luo X, Shi K, Wu T, He F, Zhou S, Chen GZ, Peng C. Highly Efficient Sulfonic/Carboxylic Dual-Acid Synergistic Catalysis for Esterification Enabled by Sulfur-Rich Graphene Oxide. CHEMSUSCHEM 2017; 10:3352-3357. [PMID: 28786227 DOI: 10.1002/cssc.201700950] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 06/20/2017] [Indexed: 06/07/2023]
Abstract
A new sulfonic/carboxylic dual-acid catalyst based on sulfur-rich graphene oxide (GO-S) was readily prepared and used as a highly efficient and reusable solid acid catalyst toward the esterification of oleic acid with methanol for biodiesel production. Higher yields of methyl oleate (98 %) and over 3 times higher turnover frequencies (TOFs) were observed for the GO-S dual-acid catalyst, compared to liquid sulfuric acid or other carbon-based solid acid catalysts. The "acidity" of sulfonic acid groups was enhanced by the addition of carboxylic acid groups as the combination of the two acids enhances their inherent activity by associative interaction.
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Affiliation(s)
- Honglei Zhang
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base, of Sustainable Resource and Energy, Wuhan University, Wuhan, 430072, P. R. China
| | - Xiang Luo
- New Materials Institute, University of Nottingham Ningbo China, Ningbo, 315100, P. R. China
| | - Kaiqi Shi
- New Materials Institute, University of Nottingham Ningbo China, Ningbo, 315100, P. R. China
| | - Tao Wu
- New Materials Institute, University of Nottingham Ningbo China, Ningbo, 315100, P. R. China
- Municipal Key Laboratory of Clean Energy Conversion Technologies, University of Nottingham Ningbo, Ningbo, 315100, P. R. China
| | - Feng He
- College of Environment, Zhejiang University of Technology, Hangzhou Zhejiang, 310014, P. R. China
| | - Shoubin Zhou
- Huafu High Technology Energy Storage Co., Ltd, Gaoyou High-tec Industrial Park, Yangzhou, Jiangsu, 225600, P. R. China
| | - George Z Chen
- Department of Chemical and Environmental Engineering, Advanced Materials Research Group, University of Nottingham, Nottingham, NG7 2RD, UK
- Department of Chemical and Environmental Engineering, Energy Engineering Research Group, Faculty of Science and Engineering, University of Nottingham Ningbo, Ningbo, 315100, P. R. China
| | - Chuang Peng
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base, of Sustainable Resource and Energy, Wuhan University, Wuhan, 430072, P. R. China
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24
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Meng C, Cao GP, Li XK, Yan YZ, Zhao EY, Hou LY, Shi HY. Structure of the SO4
2−/TiO2 solid acid catalyst and its catalytic activity in cellulose acetylation. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-017-1165-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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