Preparation of MoO3/MgO catalysts with eggshell and uniform Mo distribution by methanol assisted spreading:: Effect of MoO3 dispersion on rate of spreading

被引：15

作者：

Gulková, D ^{[1
]}

Kaluza, L ^{[1
]}

Vít, Z ^{[1
]}

Zdrazil, M ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Chem Proc Fundamentals, CR-16502 Prague 6, Czech Republic

来源：

CATALYSIS COMMUNICATIONS | 2006年 / 7卷 / 05期

关键词：

solvent assisted spreading; magnesium oxide; molybdenum catalyst; eggshell catalysts; hydrodesulfurization;

D O I：

10.1016/j.catcom.2005.10.017

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：

MoO3/MgO catalysts were prepared by the reaction of MgO extrudates (diameter 1.6 mm, S-BET = 311 m(2) g(-1)) with the MoO3/methanol slurry at room temperature. Sharp and deep eggshell Mo concentration profiles were formed. With sufficient MoO3 amount, the shell thickness increased with time until support saturation. Planetary mill ground MoO3 reacted much faster than MoO3 ground in an agate mortar mill. Uniform saturated loading of 19% MoO3 was achieved after 5 days in the former case while 11 days was not sufficient for support saturation in the latter case. HDS activity of saturated MoO3/MgO catalyst was the same as of commercial MoO3/Al2O3. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：276 / 280

页数：5

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