Catalytic destruction of chlorinated C2 compounds on a LaMnO3+δ perovskite catalyst

被引：49

作者：

Sinquin, G ^{[1
]}

Petit, C ^{[1
]}

Libs, S ^{[1
]}

Hindermann, JP ^{[1
]}

Kiennemann, A ^{[1
]}

机构：

[1] CNRS, UMR 7515, Lab Etud React Catalyt Surfaces & Interfaces, Ecole Europeenne Chim Polymers & Mat Strasbourg, F-67087 Strasbourg 2, France

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2001年 / 32卷 / 1-2期

关键词：

C-2; compounds; LaMnO3+delta perovskite; chlorofluorocarbons;

D O I：

10.1016/S0926-3373(00)00293-9

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：

The LaMnO3+delta perovskite shows interesting performances in the total catalytic destruction of chlorinated Ct hydrocarbons selectively to COx (mainly CO2) and HCl. It is shown that the unsaturated molecules are more difficult to destroy than the saturated ones. The saturated chlorinated C-2 hydrocarbons are readily converted to their unsaturated equivalent by an unimolecular elimination reaction probably catalysed by Lewis acid sites. The formation of higher chlorinated C-2 by-products can be explained by successive chlorination and dehydrochlorination reactions. Addition of water favours the destruction by decreasing the amount of chlorinated by-products and results in an enhanced carbon oxides formation. Oxygen must also be present to prevent the destruction of the active LaMnO3+delta oxygen overstoichiometric structure. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：37 / 47

页数：11

共 30 条

[1]

[Anonymous], 1985, ADV ORG CHEM

[2] CATALYTIC COMBUSTION OF METHANE OVER VARIOUS PEROVSKITE-TYPE OXIDES [J].