Formation of Ptδ+/Pt0 active sites on Ni-Cr composites supported on carbon carrier in bicyclohexyl dehydrogenation

Formation of Ptδ+/Pt0 active sites on Ni-Cr composites supported on carbon carrier in bicyclohexyl dehydrogenation Full article

Journal

Russian Chemical Bulletin
ISSN: 1573-9171 , E-ISSN: 1066-5285

Output data

Year: 2023, Volume: 72, Number: 11, Pages: 2591-2600 Pages count : 10 DOI: 10.1007/s11172-023-4063-z

Authors

Bogdan T.V. ^1,2 , Kalenchuk A.N. ^1,2 , Koklin A.E. ¹ , Bogdan V.I. ^1,2

Affiliations

1	N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 119991, Moscow, Russian Federation
2	Lomonosov Moscow State University, Department of Chemistry, Build. 3, 1 Leninskie Gory, 119991 Moscow, Russian Federation

The activity of Pt/C, Pt/Ni/C, Pt/Cr/C, and Pt-Ni-Cr/C catalysts in the dehydrogenation reaction of bicyclohexyl, a step of hydrogen release in chemical hydrogen storage systems, was studied. The catalyst surface structure was investigated by transmission electron microscopy. The charge state of platinum was assessed by XPS. The role of nickel and chromium promoters in the formation of electron-deficient (Ptδ+) and zero-valent (Pt0) platinum was analyzed. The activity of catalysts in the dehydrogenation reaction of bicyclohexyl was affected by the Ptδ+/Pt0 ratio. The highest conversion and yield of biphenyl, the product of the complete dehydrogenation of bicyclohexyl, were achieved at aPtδ+/Pt0 ratio close to 1–2.

Bogdan T.V. , Kalenchuk A.N. , Koklin A.E. , Bogdan V.I.
Formation of Ptδ+/Pt0 active sites on Ni-Cr composites supported on carbon carrier in bicyclohexyl dehydrogenation
Russian Chemical Bulletin. 2023. V.72. N11. P.2591-2600. DOI: 10.1007/s11172-023-4063-z WOS Scopus OpenAlex

≡ Web of science:	WOS:001132088500025
≡ Scopus:	2-s2.0-85180638731
≡ OpenAlex:	W4390415906