Oxidative dehydrogenation of light alkanes to olefins on metal-free catalysts

Metal-free boron- and carbon-based catalysts have shown both great fundamental and practical value in oxidative dehydrogenation (ODH) of light alkanes. In particular, boron-based catalysts show a superior selectivity toward olefins, excellent stability and atom-economy to valuable carbon-based produ...

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Published inChemical Society reviews Vol. 5; no. 2; pp. 1438 - 1468
Main Authors Sheng, Jian, Yan, Bing, Lu, Wen-Duo, Qiu, Bin, Gao, Xin-Qian, Wang, Dongqi, Lu, An-Hui
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 01.02.2021
Subjects
active sites
Alkanes
Alkenes
behavior
Boron
Carbon
carbon dioxide
Catalysts
Dehydrogenation
design
Functional groups
industrialization
kinetics
light
materials
methodology
moieties
Reaction mechanisms
Selectivity
society
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Summary:Metal-free boron- and carbon-based catalysts have shown both great fundamental and practical value in oxidative dehydrogenation (ODH) of light alkanes. In particular, boron-based catalysts show a superior selectivity toward olefins, excellent stability and atom-economy to valuable carbon-based products by minimizing CO 2 emission, which are highly promising in future industrialization. The carbonaceous catalysts also exhibited impressive behavior in the ODH of light alkanes helped along by surface oxygen-containing functional groups. This review surveyed and compared the preparation methods of the boron- and carbon-based catalysts and their characterization, their performance in the ODH of light alkanes, and the mechanistic issues of the ODH including the identification of the possible active sites and the exploration of the underlying mechanisms. We discussed different boron-based materials and established versatile methodologies for the investigation of active sites and reaction mechanisms. We also elaborated on the similarities and differences in catalytic and kinetic behaviors, and reaction mechanisms between boron- and carbon-based metal-free materials. A perspective of the potential issues of metal-free ODH catalytic systems in terms of their rational design and their synergy with reactor engineering was sketched. Metal-free boron- and carbon-based catalysts for the oxidative dehydrogenation of light alkanes is reviewed from the preparation methods, characterization, catalytic performance and mechanistic issues.
Bibliography:Bing Yan, born in 1990, obtained his BSc degree from Inner Mongolia University of Science and Technology, and then MSc degree from Dalian Polytechnic University, China. He is currently working on his PhD thesis in the group of Prof. Dr A.-H. Lu and focuses on the oxidative dehydrogenation of light alkanes with metal-free catalysts.
Dongqi Wang received his PhD degree from the University of Hong Kong in 2004. He worked at MPI für Kohlenforschung, University of Calgary and ETH Zurich. In 2011, he was selected into the "One Hundred Talents Plan" of Chinese Academy of Sciences and took a faculty position in the Institute of High Energy Physics, Chinese Academy of Sciences. In 2020, he moved to Dalian University of Technology where he is now a professor in chemistry. His research interests include the computational study and big data of heterogeneous catalysis and actinide chemistry.
Jian Sheng, born in 1994, obtained his BSc degree from Guizhou University. He is currently working on his PhD thesis in the group of Prof. Dr A.-H. Lu and focuses on the oxidative conversion of alkanes with boron-containing heterogeneous catalysts.
Wen-Duo Lu, born in 1991, obtained her BSc degree from Qingdao University of Science and Technology, then received an MSc degree and PhD degree from Dalian University of Technology. She is currently working as a postdoctoral fellow at Dalian University of Technology and focuses on the oxidative dehydrogenation of light alkanes with metal-free catalysts.
Bin Qiu, born in 1993, obtained his BSc degree from China University of Mining and Technology. He is currently working on his PhD thesis in the group of Prof. Dr A.-H. Lu and focuses on the oxidative dehydrogenation of light alkanes with zeolite catalysts.
An-Hui Lu is currently a professor of Dalian University of Technology, and vice director of the State Key Laboratory of Fine Chemicals. He received the National Science Fund for Distinguished Young Scholars of China (2012), Cheung Kong Scholar by the Ministry of Education of China (2015). He has authored and co-authored more than 200 papers with citation over 17 000 times (H-index, 65). His research interests include synthesis of porous materials for heterogeneous catalysis, adsorption, energy storage and conversion.
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ISSN:0306-0012
1460-4744
1460-4744
DOI:10.1039/d0cs01174f