Preparation of Nickel Phosphide Hydrodesulfurization Catalysts Assisted by Supercritical Carbon Dioxide

被引：12
作者：
Motos-Perez, Blanca [1 ,2 ]
Uzio, Denis [1 ]
Aymonier, Cyril [2 ]
机构：
[1] IFP Energies Nouvelles, Rond Point Echangeur Solaize, Catalysis & Separat Div, F-69360 Solaize, France
[2] Univ Bordeaux, CNRS, ICMCB, UPR 9048, F-33600 Pessac, France
来源：
CHEMCATCHEM | 2015年 / 7卷 / 21期
关键词：
heterogeneous catalysis; hydrodesulfurization; nanoparticles; nickel phosphide; supercritical fluids; METAL PHOSPHIDES; MODEL-COMPOUND; MO; 4,6-DIMETHYLDIBENZOTHIOPHENE; HYDRODEOXYGENATION; TEMPERATURE; SCALE; NI2P; OIL;
D O I：
10.1002/cctc.201500755
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：
To meet the increasing demand for clean fuels, deep hydrotreatment reactions are required, and thereby, improvement of the performance of the catalysts is highly desired. Silica-supported nickel phosphide (Ni2P) nanoparticles have been reported to be efficient catalysts for hydrodesulfurization (HDS) reactions. We propose herein an innovative preparation method assisted by supercritical carbon dioxide (scCO(2)) to produce highly active Ni2P nanoparticles combining small size and high reducibility. In addition, scCO(2) promotes the formation of the Ni2P phase with respect to the less active Ni12P5 phase. Such phosphide catalysts exhibit high activity for the HDS of 4,6-dimethyldibenzothiophene, with a rate constant up to one order of magnitude higher than that of non-supercritical references and close to conventional alumina supported NiMoS catalyst.
引用
收藏
页码：3441 / 3444
页数：4
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