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CoMo/Al2O3 hydrotreating catalysts prepared from single Co2Mo10-heteropolyacid at extremely high metal loading
Catalysis Communications ( IF 3.4 ) Pub Date : 2019-05-07 , DOI: 10.1016/j.catcom.2019.05.003
M. Nikulshina , A. Kokliukhin , A. Mozhaev , P. Nikulshin

A series of alumina supported CoMo catalysts with different molybdenum surface density was prepared using incipient wet impregnation method and applying H6[Co2Mo10O38H4] (Co2Mo10HPA) as a single oxidic precursor. Dried and sulfided catalysts were characterized by a variety of techniques, such as N2 adsorption, micro-Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy (HRTEM). Catalytic properties have been examined in co-hydrotreating of dibenzothiophene and naphthalene using a fixed bed high-pressure flow reactor. It was found that using Co2Mo10HPA as a single precursor enables more than the double increase of maximum metal loading compared to conventional compounds. This also contributed to a significant increase in catalytic activity in hydrotreating.



中文翻译:

由单一Co 2 Mo 10-杂多酸以极高的金属负载量制备的CoMo / Al 2 O 3加氢处理催化剂

采用初期湿法浸渍法,以H 6 [Co 2 Mo 10 O 38 H 4 ](Co 2 Mo 10 HPA)为单一氧化物前驱体,制备了一系列钼表面密度不同的氧化铝负载的CoMo催化剂。干燥和硫化的催化剂通过多种技术进行表征,例如N 2吸附,微拉曼光谱,X射线光电子能谱(XPS)和高分辨率透射电子显微镜(HRTEM)。已经使用固定床高压流动反应器在二苯并噻吩和萘的共加氢处理中检查了催化性能。发现使用Co 2 Mo与传统化合物相比,作为单一前体的10 HPA可使最大金属负载量增加一倍以上。这也导致加氢处理中催化活性的显着提高。

更新日期:2019-05-07
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