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Ferric Single-Site Catalyst Confined in a Zeolite Framework for Propane Dehydrogenation |
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| Authors: | Guangyue Xu Xiang Zhang Zhuoya Dong Wanying Liang Tianci Xiao Huiyong Chen Yanhang Ma Yang Pan Yao Fu |
| Affiliation: | 1. Hefei National Research Center for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei, 230026 China;2. Hefei National Research Center for Physical Sciences at the Microscale, iChEM, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei, 230026 China These authors contributed equally to this work.;3. School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210 China These authors contributed equally to this work.;4. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026 China;5. School of Chemical Engineering, Northwest University, Xi'an, Shaanxi, 710069 China;6. School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210 China |
| Abstract: | Non-oxidative dehydrogenation of propane is a highly efficient approach for industrial preparation of propene that is commonly catalyzed by noble Pt or toxic Cr catalysts and suffers from coking. In this work, ferric catalyst confined in a zeolite framework was synthesized by a hydrothermal procedure. The isolated Fe in the framework formed distorted tetrahedra, which were beneficial for the selective dehydrogenation of propane and reached over 95 % propene selectivity and over 99 % total olefins selectivity. This catalyst had a silanol-free structure and was oxygen tolerant, hydrothermally stable, and coke free, with a deactivation constant of 0.01 h−1. This study provided guidance for the synthesis of structural heteroatomic zeolite and efficient propane non-oxidative dehydrogenation over early transition metals. |
| Keywords: | Dehydrogenation Ferric species Propane Single-Site Catalyst Zeolite |