2. Academic Validation
  3. Study of catalytic hydrogenation and dehydrogenation of 2,3-dimethylindole for hydrogen storage application

Study of catalytic hydrogenation and dehydrogenation of 2,3-dimethylindole for hydrogen storage application

  • RSC Adv. 2021 Apr 27;11(26):15729-15737. doi: 10.1039/d1ra01552d.
Yuan Dong 1,  Haoming Zhao 1,  Yinheng Zhao 1,  Ming Yang 1 2,  Heshun Zhang 1,  Hansong Cheng 1
Affiliations

Affiliations

  • 1 Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan 430074 P. R. China.
  • 2 Zhejiang Institute, China University of Geosciences Hangzhou 311305 China [email protected].
PMID: 35481171 DOI: 10.1039/d1ra01552d
Abstract

2,3-Dimethylindole (2,3-DMID), a candidate with a hydrogen storage capacity of 5.23 wt%, was studied as a new liquid organic hydrogen carrier (LOHC) in detail in this report. Hydrogenation of 2,3-DMID was conducted over 5 wt% Ru/Al2O3 by investigating the influences of temperature and hydrogen pressure. 100% of fully hydrogenated product, 8H-2,3-DMID can be achieved at 190 °C and 7 MPa in 4 h. Dehydrogenation of 8H-2,3-DMID was performed over 5 wt% Pd/Al2O3 at 180-210 °C and 101 kPa. It is found that dehydrogenation of 8H-2,3-DMID followed first order kinetics with an apparent activation energy of 39.6 kJ mol-1. The structures of intermediates produced in the 8H-2,3-DMID dehydrogenation process were analyzed by DFT calculations.

Figures
Products