Kinetics of Mo, Ni, V and Al leaching from a spent hydrodesulphurization catalyst in a solution containing oxalic acid and hydrogen peroxide

被引：92

作者：

Szymczycha-Madeja, Anna ^{[1
]}

机构：

[1] Wroclaw Univ Technol, Div Analyt Chem, Dept Chem, PL-50370 Wroclaw, Poland

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 186卷 / 2-3期

关键词：

Kinetics; Spent catalyst; Leaching; Recovery; Oxalic acid; Hydrogen peroxide; HYDROPROCESSING CATALYSTS; METAL RECOVERY; NICKEL; DISSOLUTION; MOLYBDENUM; REJUVENATION; VANADIUM; NITRATE;

D O I：

10.1016/j.jhazmat.2010.11.120

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The kinetics of molybdenum, nickel, vanadium and aluminium leaching from a spent hydrodesulphurization catalyst in a solution containing oxalic acid and hydrogen peroxide was investigated. The effects of temperature and particle size were examined. In addition, the reaction mechanism for the dissolution of the spent catalyst was discussed. The results of the kinetic analysis for various experimental conditions indicated that the reaction rate of leaching process is controlled by chemical reaction at the particle surface. The values of the activation energies of 31 +/- 2,36 +/- 4.30 +/- 4 and 57 +/- 3 kJ mol(-1) for Mo, Ni, v and Al, respectively, are characteristic for mechanism controlled by chemical reaction. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2157 / 2161

页数：5

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