TPD study about the surface modification of some Ni/spinel catalysts in the hydrodechlorination of 1,2,4-trichlorobenzene. Influence on hydrogenation ability

被引:10
作者
Cesteros, Y
Salagre, P
Medina, F
Sueiras, JE
机构
[1] Univ Rovira & Virgili, Escola Tecn Super Engn, Tarragona 43005, Spain
[2] Univ Rovira & Virgili, Fac Quim, Tarragona 43005, Spain
关键词
cyclohexane; Ni/spinel; 1,2,4-trichlorobenzene; surface chlorination;
D O I
10.1023/A:1019057219750
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
NiAl2O4 supports and fresh and reactivated Ni/NiAl2O4 catalysts were tested in the gas phase hydrodechlorination of 1,2,4-trichlorobenzene. Fresh catalysts hydrogenate 1,2,4-trichlorobenzene to cyclohexane in the first 30 min of reaction at 523 K. An irreversible partial chlorination of the catalytic surface makes the hydrogenation of the aromatic ring difficult.
引用
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页码:147 / 153
页数:7
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