EXAFS measurements of a working catalyst in the liquid phase:: An in situ study of a Ni2P hydrodesulfurization catalyst

被引：83

作者：

Kawai, T.

Bando, K. K.

Lee, Y-K.

Oyama, S. T. ^{[1
]}

Chun, W-J

Asakura, K.

机构：

[1] Virginia Polytech Inst & State Univ, Dept Chem Engn, Blacksburg, VA 24061 USA

[2] Hokkaido Univ, Ctr Catalysis Res, Sapporo, Hokkaido 060, Japan

[3] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058569, Japan

来源：

JOURNAL OF CATALYSIS | 2006年 / 241卷 / 01期

基金：

日本学术振兴会;

关键词：

Ni2P/SiO2; deep hydrodesulfurization; in situ EXAFS; high pressure; high temperature; liquid phase; boron nitride;

D O I：

10.1016/j.jcat.2006.03.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Strict environmental regulations and declining quality of petroleum feedstocks have made sulfur removal one of the most important current problems in refining. A novel, high-activity Ni2P/SiO2 catalyst with exceptional activity in deep hydrodesulfurization (HDS) was studied by in situ extended X-ray absorption fine structure (EXAFS). The measurements were conducted at realistic conditions of high pressure (3 MPa) and high temperature (613 K) and were made possible by the use of a low-volume cell with cubic boron nitride windows. The spectra thus obtained reveal that the bulk Ni2P structure is stable at reaction conditions, but that the active surface has Ni-S bonds. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：20 / 24

页数：5

共 21 条

[1] In-situ XAFS analysis of Y zeolite-supported Rh catalysts during high-pressure hydrogenation of CO2 [J].