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Microwave-assisted acid-induced formation of linker vacancies within Zr-based metal organic frameworks with enhanced heterogeneous catalysis

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Chinese Chemical Letters 2021年第2期32卷 787-790页

作者： Yu Liang Chenhui Li Lanjun Chen Jia Huo Mohammed Loubidi Yangyang Zhou Yanbo Liu State Key Laboratory of Chem/Bio-sensing and Chemometrics College of Chemistry and Chemical Engineering.Hunan UniversityChangsha 410082China Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion.Hunan University of Science and Technology Xiangtan 411201China

Herein,we report a microwave-assisted acid-induced post-treatment method for the formation of linker vacancies within Zr-based metal organic frameworks(Zr-MOFs).The number of linker vacancies can be easily regulated with this method by changing the concentration of the HCl solution and the duration of microwave *** optimized defective UiO-66 showed higher linker defects with a higher specific surface area and thermal *** results of the catalytic cyclization of citronella showed that the Zr-MOFs with more defects exhibited enhanced catalytic *** work may provide a new method for the creation of defective MOFs with high activity and stability.

关键词： Metal-organic frameworks Microwave Acid etching Linker vacancy Stability heterogeneous catalysis

Sustainable chemical upcycling of waste polyolefins by heterogeneous catalysis

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SusMat 2022年第2期2卷 161-185页

作者： Mingyu Chu Weilin Tu Shuangqiao Yang Congyang Zhang Qingye Li Qiao Zhang Jinxing Chen Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhouP.R.China State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversityChengduP.R.China Department of Chemistry University of Western OntarioLondonOntarioCanada College of Food Science Sichuan Agricultural UniversityYa’anP.R.China

The mass production of disposable polyolefin products has led to serious plastic pollution and an imbalance between manufacturing and *** these challenges,the chemical upcycling of waste polyolefins has attracted extensive attention due to its high efficiency and economic ***,we review the development of polyolefin chemical upcycling in heterogeneous *** status quo of polyolefin recycling is first *** then introduce the advanced strategies for chemical upcycling in the view of different value-added products and discuss their challenges and *** in-depth analysis centers on the catalytic mechanism and the design principle of heterogeneous cata***,we outlook the promising directions to facilitate the degradation process via polymer and catalyst design and optimized catalytic *** strategies are expected to promote the chemical upcycling of polyolefins,bringing great promise for the sustainable development of society.

关键词： chemical upcycling heterogeneous catalysis plastic recovery polyolefin value-added products

Availability of elements for heterogeneous catalysis: Predicting the industrial viability of novel catalysts

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Chinese Journal of catalysis 2018年第1期39卷 16-26页

作者： Anders B. Laursen Jens Sehested Ib Chorkendorff Peter C. K. Vesborg Department of Physics Technical University of DenmarkFysikvej bygn.307DK‐2800 Kgs.LyngbyDenmark Haldor Topsoe A/S Haldor Topsoe Alle 1DK乚2800 Kgs.LyngbyDenmark

Growing concern regarding the sustainability of the chemical industry has driven the developmentof more efficient catalytic ***‐generation estimates of catalyst viability are based oncrustal abundance,which has severe ***,we propose a second‐generation approachto predicting the viability of novel catalysts prior to industrial implementation to benefit the globalchemical *** this prediction,we found that a correlation exists between catalyst consumptionand the annual production or price of the catalyst element for11representative industrialcatalytic *** on this correlation,we have introduced two new descriptors for catalystviability,namely,catalyst consumption to availability ratio per annum(CCA)and consumed catalystcost to product value ratio per annum(CCP).Based on evaluations of CCA and CCP for selected industrial reactions,we have grouped catalysts from the case studies according to viability,allowing the identification of general limits of viability based on CCA and *** the CCA and CCP and their comparing with the general limits of viability provides researchers with a novel framework for evaluating whether the cost or physical availability of a new catalyst could be *** have extended this analysis to calculate the predicted limits of economically viable production and product cost for new catalysts.?2018,Dalian Institute of Chemical Physics,Chinese Academy of *** by Elsevier *** rights reserved.

关键词： heterogeneous catalysis Industrial catalysis Sustainability Element availability Catalyst Catalyst design Element abundance Scalability

Importance, features and uses of metal oxide catalysts in heterogeneous catalysis

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Chinese Journal of catalysis 2019年第11期40卷 1627-1636页

作者： Jacques C. Védrine Sorbonne Université Laboratoire de réactivité de surface UMR-CNRS 7197 4 place Jussieu. F-75252 Paris France

This short review paper aims at assembling the present state of the art of the multiuses of metal oxides in heterogeneous catalysis, concerning liquid and gaseous phases of the reactant mixtures on solid catalysts. It includes the description of the main types of metal oxide catalysts, of their various preparation procedures and of the main reactions catalysed by them (acid-base type, selective and total oxidations, bi-functional catalysis, photocatalysis, biomass treatments, environmental catalysis and some of the numerous industrial applications). Challenges and prospectives are also discussed.

关键词： heterogeneous catalysis Metal oxide catalyst Preparation procedure Acid-base reaction Selective and total oxidation reaction Photocatalysis Environmental catalysis Industrial process

Progress on Porous Ceramic Membrane Reactors for heterogeneous catalysis over Ultrafine and Nano-sized Catalysts

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Chinese Journal of Chemical Engineering 2013年第2期21卷 205-215页

作者： JIANG Hong MENG Lie CHEN Rizhi JIN Wanqin XING Weihong XU Nanping State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemistry and Chemical Engineering Nanjing University of Technology Nanjing 210009 China

heterogeneous catalysts with ultrafine or nano particle size have currently attracted considerable attentions in the chemical and petrochemical production processes, but their large-scale applications remain challenging because of difficulties associated with their efficient separation from the reaction slurry. A porous ceramic membrane reactor has emerged as a promising method to solve the problem concerning catalysts separation in situ from the reaction mixture and make the production process continuous in heterogeneous catalysis. This article presents a review of the present progress on porous ceramic membrane reactors for heterogeneous catalysis, which covers classification of configurations of porous ceramic membrane reactor, major considerations and some important industrial applications. A special emphasis is paid to major considerations in term of application-oriented ceramic membrane design, optimization of ceramic membrane reactor performance and membrane fouling mechanism. Finally, brief concluding remarks on porous ceramic membrane reactors are given and possible future research interests are also outlined.

关键词： porous ceramic membrane membrane reactor heterogeneous catalysis

Application of hierarchically porous metal-organic frameworks in heterogeneous catalysis:A review

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Science China Materials 2022年第2期65卷 298-320页

作者： Chongxiong Duan Kuan Liang Jiahui Lin Jingjing Li Libo Li Le Kang Yi Yu Hongxia Xi School of Materials Science and Hydrogen Engineering Foshan UniversityFoshan 528231China School of Chemistry and Chemical Engineering South China University of TechnologyGuangzhou 510640China School of Materials Science and Engineering Xi’an University of Science and TechnologyXi’an 710054China Guangdong Key Laboratory for Hydrogen Energy Technologies Foshan UniversityFoshan 528000China

Hierarchically porous metal-organic frameworks(H-MOFs)with micro-,meso-and macropores have emerged as a popular class of crystalline porous materials that have attracted extensive interests,and they have been studied in diverse applications,especially in heterogeneous *** hierarchical structures enable sufficient diffusion and accessibility to the active sites of the molecules and permit the encapsulation of catalytic guest molecules to exploit more possibilities with enhanced catalytic *** this review,we have summarized the recent representative developments of H-MOFs in the field of heterogeneous catalysis,which includes oxidation reaction,hydrogenation reaction,and condensation *** is placed on the multiple functions of hierarchical structures,and the catalytic activity,selectivity,stability,recyclability,*** the industrial utility of ***,the prospects and challenges of H-MOFs in heterogeneous catalysis and the remaining issues in this field are presented.

关键词： hierarchically porous metal-organic frameworks heterogeneous catalysis industrial practicability

Direct carbon dioxide hydrogenation to produce bulk chemicals and liquid fuels via heterogeneous catalysis

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Chinese Journal of catalysis 2022年第8期43卷 2045-2056页

作者： Zixuan Zhou Peng Gao CAS Key Laboratory of Low‐Carbon Conversion Science and Engineering Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China University of the Chinese Academy of Sciences Beijing 100049China

The hydrogenation of carbon dioxide(CO_(2))to produce chemicals and transportation liquid fuels in huge demand via heterogeneous thermochemical catalysis achieved using renewable energy has received increasing attention,and substantial advances have been made in this research field in recent *** this study,we summarize our progress in the rational design and construction of highly efficient catalysts for CO_(2) hydrogenation to methanol,lower olefins,aromatics,and gasolineand jet fuel-range *** structure‐performance relationship,nature of the active sites,and mechanism of the reactions occurring over these catalysts are explored by combining computational and experimental *** results of this study will promote further fundamental studies and industrial applications of heterogeneous catalysts for CO_(2) hydrogenation to produce bulk chemicals and liquid fuels.

关键词： Carbon dioxide hydrogenation heterogeneous catalysis Coupling reaction Rational design Reaction mechanism

Recent Advances in Multifunctional Capsule Catalysts in heterogeneous catalysis

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Chinese Journal of Chemical Physics 2018年第4期31卷 393-403,613页

作者： Xin-hua Gao Qing-xiang Ma Tian-sheng Zha Jun Bao Noritatsu Tsubaki State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry ＆ Chemical EngineeringNingxia UniversityYinchuan 750022China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Department of Applied Chemistry School of EngineeringUniversity of ToyamaGofuku 3190Toyama 930-8555Japan

Capsule catalysts composed of pre-shaped core catalysts and layer zeolites have been widely used in the tandem reactions where multiple continuous reactions are combined into one process. They show excellent catalytic performance in heterogeneous catalysis, including the direct synthesis of middle isoparaflins or dimethyl ether from syngas, as compared to the conventional hybrid catalysts. The present review highlights the recent development in the design of capsule catalysts and their catalytic applications in heterogeneous catalysis. The capsule catalyst preparation methods are introduced in detail, such as hydrothermal synthe- sis method, dual-layer method, physically adhesive method and single crystal crystallization method. Purthermore, several new applications of capsule catalysts in heterogeneous cat- alytic processes are presented such as in the direct synthesis of liquefied petroleum gas from syngas, the direct synthesis of para-xylene from syngas and methane dehydroaromatization. In addition, the development in the design of multifunctional capsule catalysts is discussed, which makes the capsule catalyst not just a simple combination of two dill）rent catalysts, but has some special functions such as changing the surface hydrophobic or acid properties of the core catalysts. Finally, the future perspectives of the design and applications of capsule catalysts in heterogeneous catalysis are provided.

关键词： Capsule catalyst Tandem reaction Zeolite heterogeneous catalysis

Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

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Frontiers of Environmental Science & Engineering 2021年第5期15卷 45-65页

作者： Violeta Makareviciene Egle Sendzikiene Ieva Gaide Agriculture Academy Vytautas Magnus UniversityK.Donelaicio str.58LT-44248KaunasLithuania

Recently,there is a growing interest in the use of microalga in various *** have properties such as rapid reproduction and high biomass accumulation,and under certain conditions,some are able to accumulate a large amount of ***,microalgae oil often contains more free fatty acids than the vegetable oil and is therefore unsuitable for biodiesel synthesis using alkaline *** this reason,some authors suggest the application of heterogeneous catalysis.A particular interest in the use of immobilized enzymes has *** solid substances can also be used as heterogeneous catalysts are usually metal oxides,carbonates or *** use of these catalysts results in simpler biodiesel synthesis,especially purification processes,a cleaner end product and a less polluted *** molar ratio of alcohol to oil is lower during enzymatic transesterification,and more than 90%ester yield is obtained using a molar ratio of alcohol to oil of 3:1 to 4.5:*** alcohols do not have a negative effect on the effectiveness of chemical catalysts,so it is possible to use alcohols in molar ratio from 4:1 to 12:*** optimal temperature of enzymatic process is 30℃–50℃.An ester yield of more than 95%was obtained in 12–48 *** chemical catalysts,greater than a 95%yield of esters was obtained at higher temperatures in a shorter *** costs of enzymatic catalysis can be reduced by reusing the catalysts directly or after regeneration.

关键词： Biodiesel heterogeneous catalysis Transesterification Microalgae oil