Synergistic effect of metal components of the low-loaded Pt-Ni-Cr/C catalyst in the bicyclohexyl dehydrogenation reaction

Synergistic effect of metal components of the low-loaded Pt-Ni-Cr/C catalyst in the bicyclohexyl dehydrogenation reaction Full article

Journal

International Journal of Hydrogen Energy
ISSN: 0360-3199 , E-ISSN: 1879-3487

Output data

Year: 2021, Volume: 46, Number: 27, Pages: 14532-14539 Pages count : 8 DOI: 10.1016/j.ijhydene.2021.01.208

Authors

Bogdan Viktor I. ^1,2 , Kalenchuk Alexander N. ^1,2 , Chernavsky Petr A. ^1,2 , Bogdan Tatiana V. ^1,2 , Mishanin Igor I. ² , Kustov Leonid M. ^1,2

Affiliations

1	Chemistry Department, Moscow State University, 1-3 Leninskie Gory, Moscow, 199991, Russia
2	N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky, Prosp., Moscow, 119991, Russia

The problem of hydrogen storage in liquid organic hydrogen carriers is not only the choice of an appropriate organic substrate, but the development of a selective and active catalyst containing as low as possible noble metals. A synergistic effect of increasing conversion and selectivity in bicyclohexyl dehydrogenation to biphenyl on trimetallic Pt-Ni-Cr/C catalysts with an extremely low Pt loading (0.1 wt %), compared with bimetallic Ni-Cr/C and Pt/Ni/C systems, due to the supporting of platinum on nickel-chromium nanoparticles was established for the first time. The TOF values (mmol (H2)/gPt min) for hydrogen evolution under conditions of the reaction of bicyclohexyl dehydrogenation (320 °C, 0.1 MPa) on Pt supported onto a Ni-Cr/С composite exceed by two orders of magnitude the values found for the two-component catalysts. The maximum amount of the evolved hydrogen correlates to the selectivity of the complete dehydrogenation of bicyclohexyl into biphenyl on the Pt-Ni-Cr/C catalyst. The formation of a Ni-Cr solid substitution solution in a Ni-Cr composite deposited on a carbon carrier is shown by magnetometry, XRD, and TEM methods.

Bogdan V.I. , Kalenchuk A.N. , Chernavsky P.A. , Bogdan T.V. , Mishanin I.I. , Kustov L.M.
Synergistic effect of metal components of the low-loaded Pt-Ni-Cr/C catalyst in the bicyclohexyl dehydrogenation reaction
International Journal of Hydrogen Energy. 2021. V.46. N27. P.14532-14539. DOI: 10.1016/j.ijhydene.2021.01.208 WOS Scopus OpenAlex

Web of science:	WOS:000639329700015
Scopus:	2-s2.0-85101176892
OpenAlex:	W3129203320

DB	Citing
OpenAlex	20
Scopus	14
Web of science	18