期刊
CATALYSIS COMMUNICATIONS
卷 12, 期 6, 页码 470-474出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2010.10.016
关键词
Ni2P catalyst; Liquid phase phosphidation; HDS; 4,6-DMDBT; EXAFS
A nickel phosphide (Ni2P) catalyst supported on gamma-Al2O3 was successfully synthesized by a liquid phase phosphidation (LP) in the presence of trioctylphosphine and trioctylphosphine oxide. Characterizations were made by BET, CO uptake, TPR, Al-27-NMR, and EXAFS spectroscopy, which revealed that the Ni2P phase remained stable during reaction without the formation of AlPO4 phase. The Ni2P/Al2O3-LP catalyst gave a good and stable activity with a 4,6-DMDBT HDS conversion of 99% at 573 K and 3.1 MPa, which was much higher than the Ni2P/Al2O3-HT catalyst (HDS conversion of 45%) prepared by the conventional temperature-programmed reduction method. (C) 2010 Elsevier B.V. All rights reserved.
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