Hydrodechlorination of dichlorodifluoromethane on carbon-supported Group VIII noble metal catalysts

被引：54

作者：

Kulkarni, PP ^{[1
]}

Deshmukh, SS ^{[1
]}

Kovalchuk, VI ^{[1
]}

d'Itri, JL ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA

来源：

CATALYSIS LETTERS | 1999年 / 61卷 / 3-4期

关键词：

dichlorodifluoromethane; difluoromethane; ethylene; tetrafluoroethylene; hydrodechlorination; dechlorinative oligomerization; activated carbon; noble metals;

D O I：

10.1023/A:1019005813080

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：

Activated carbon-supported Group VIII noble metals formed CF2Cl2 oligomerization products under hydrodechlorination conditions. All the catalysts underwent deactivation during first 15-20 h on stream at 250 degrees C independent of the H-2 partial pressure, with steady-state activity following the order: Pt > Pd >> Ir > Ru approximate to Os approximate to Rh. The Pd/C catalyst exhibited high selectivity toward C-2-C-3 hydrocarbons (similar to 75% at CF2Cl2/H-2= 1). For the other catalysts except Pt, CF2=CF2 and CH2=CF2 were the main C2+ products.

引用

页码：161 / 166

页数：6

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