Chinese Journal of Catalysis ›› 2024, Vol. 58: 168-179.DOI: 10.1016/S1872-2067(23)64606-6

• Article • Previous Articles     Next Articles

Primary alcohols as killers of Ni-based catalysts in transfer hydrogenation

Nikolay Nesterov*(), Alexey Philippov*(), Vera Pakharukova, Evgeny Gerasimov, Stanislav Yakushkin, Oleg Martyanov   

  1. Boreskov Institute of Catalysis SB RAS, Novosibirsk 630090, Russia
  • Received:2023-11-28 Accepted:2024-01-19 Online:2024-03-18 Published:2024-03-28
  • Contact: *nesterov@catalysis.ru (N. Nesterov),philippov@catalysis.ru (A. Philippov).

Abstract:

The effect of different types of alcohols used as hydrogen donors on the activity of a metal Ni-based catalyst in the hydrogenation of benzofuran as a model substrate under transfer hydrogenation conditions has been studied. The hydrogenation process of benzofuran using 2-PrOH as a hydrogen donor leads sequentially to dearomatization and then to deoxygenation of the substrates. At the same time, the use of primary alcohols such as MeOH, EtOH and 1-PrOH as hydrogen donors leads to irreversible deactivation of the Ni-containing catalyst. A clear mechanism of deactivation of Ni-based metal catalysts by primary alcohols has been established. The interaction of the catalyst with primary alcohols at a temperature of 250 °C leads to the formation of an inactive Ni3C carbide phase, as well as sintering and segregation of metal particles on the surface of the alumina support.

Key words: Benzofuran, Transfer hydrogenation, Supercritical coprecipitation, Ni-catalysts, Alcohols