Sacrificial carbonaceous coating over alumina supported Ni-MoS₂ catalyst for hydrodesulfurization.

ABSTRACT: Recent results have evidenced that carbon plays an important role in stabilizing the structure of the active phase in catalysts. In this work, carbon-coated alumina was prepared by applying polydopamine (PDA) as a sacrificial carbon source to modify the surface properties of γ-alumina, which then was used as a support to prepare supported NiMo catalysts for hydrodesulfurization (HDS) of dibenzothiophene (DBT). NiMo/Al₂O₃ catalysts exhibited limited hydrodesulfurization performances due to their strong metal-support interaction. Herein, we report an unexpected phenomenon that sacrificial carbon layers can be constructed on the surface of the Al₂O₃ support from the carbonization of polydopamine (PDA) and mediated the interaction between the active

SUBMITTER: Xu Y 

PROVIDER: S-EPMC9063471 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature