Реферат: The effect of using a mixture of 10 mol% H2S and H2 to passivate a Ni2P/MCM-41 catalyst was studied. It was found that H2S passivation was superior to conventional O2 passivation because it gave a higher HDS activity and required no post re-reduction. Chemisorption of CO indicated that the passivation layer covered or replaced the surface active sites. Characterization of X-ray photoelectron spectroscopy revealed that the sulfur species on the surface of the H2S-passivated Ni2P/MCM-41 were polysulfide ligands rather than S2− or S2−2 and the sulfur species were partially oxidized. A treatment with NH3 was also used, and it was found that N species were strongly bonded to the surface sites of Ni2P. Hydrodesulfurization and hydrodenitrogenation/hydrodeoxygenation were carried out in an alternating sequential manner to study the effect of surface sulfur on the catalytic activity of Ni2P/MCM-41. Sulfur analysis of the spent catalysts revealed that the HDS activity correlated with the sulfur content retained on Ni2P/MCM-41, indicating that sulfur is part of the active sites of the HDS reaction.

Библиографическая ссылка: DUAN X. , TENG Y. , WANG A. , KOGAN V. , LI X. , WANG Y.
Role of sulfur in hydrotreating catalysis over nickel phosphide
Journal of Catalysis. 2009. V.261. N2. P.232-240. DOI: 10.1016/j.jcat.2008.12.003 WOS Scopus OpenAlex

Идентификаторы БД:

Web of science:	WOS:000263564900013
Scopus:	2-s2.0-58649104412
OpenAlex:	W2073511357

Цитирование в БД:

БД	Цитирований
OpenAlex	104
Scopus	115
Web of science	101

Альметрики: