Propane dehydrogenation catalysis of group IIIB and IVB metal hydrides

Xiaoming Hu; Mengwen Huang; Tetsuya Kinjyo; Shinya Mine; Takashi Toyao; Yoyo Hinuma; Masaaki Kitano; Toyoto Sato; Norikazu Namiki; Ken-ichi Shimizu; Zen Maeno

doi:10.1039/D4RA02473G

Propane dehydrogenation catalysis of group IIIB and IVB metal hydrides†

Xiaoming Hu,^a Mengwen Huang,^a Tetsuya Kinjyo,^b Shinya Mine,

^c Takashi Toyao,

^a Yoyo Hinuma,

^d Masaaki Kitano,

^ef Toyoto Sato,^g Norikazu Namiki,

^b Ken-ichi Shimizu

^a and Zen Maeno

*^b

Author affiliations

* Corresponding authors

^a Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan

^b School of Advanced Engineering, Kogakuin University, 2665-1, Nakano-cho, Hachioji, Japan
E-mail: zmaeno@cc.kogakuin.ac.jp

^c National Institute of Advanced Industrial Science and Technology (AIST), Research Institute for Chemical Process Technology, 4-2-1 Nigatake, Miyagino, Sendai 983-8551, Japan

^d Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology, 1-8-31, Midorigaoka, Ikeda 563-8577, Japan

^e MDX Research Center for Element Strategy, International Research Frontiers Initiative, Tokyo Institute of Technology, Midori, Yokohama 226-8503, Japan

^f Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan

^g Department of Engineering Science and Mechanics, College of Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan

Abstract

Catalytic propane dehydrogenation (PDH) has mainly been studied using metal- and metal oxide-based catalysts. Studies on dehydrogenation catalysis by metal hydrides, however, have rarely been reported. In this study, PDH reactions using group IIIB and IVB metal hydride catalysts were investigated under relatively low-temperature conditions of 450 °C. Lanthanum hydride exhibited the lowest activation energy for dehydrogenation and the highest propylene yield. Based on kinetics studies, a comparison between the reported calculation results and isotope experiments, the hydrogen vacancies of metal hydrides were involved in low-temperature PDH reactions.

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Propane dehydrogenation catalysis of group IIIB and IVB metal hydrides†

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Propane dehydrogenation catalysis of group IIIB and IVB metal hydrides

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