CATALYTIC COMBUSTION OF METHANE OVER PALLADIUM EXCHANGED ZEOLITES

被引：119

作者：

LI, YJ ^{[1
]}

ARMOR, JN ^{[1
]}

机构：

[1] AIR PROD & CHEM INC,7501 HAMILTON BLVD,ALLENTOWN,PA 18195

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 1994年 / 3卷 / 04期

关键词：

CATALYST PREPARATION (ION EXCHANGE); METHANE COMBUSTION; PALLADIUM ZEOLITE; ZEOLITES;

D O I：

10.1016/0926-3373(94)0006Z-H

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：

Palladium cation exchanged zeolites (ZSM-5, mordenite and ferrierite) were studied as catalysts for methane combustion. Pd-zeolites showed much higher activities than PdO/Al2O3. For comparable palladium loadings, PdO/Al2O3 requires a reaction temperature of ca. 70-80-degrees-C higher than Pd-ZSM-5 for conversions between 50-100%. The catalytic activity of Pd-ZSM-5 seems to be related to its reducibility. Temperature-programmed reduction experiments with carbon monoxide showed a lower reduction temperature (ca. 157-degrees-C) for Pd-ZSM-5 than for PdO/Al2O3 (225-degrees-C). Further, the positioning of the palladium by ion exchange offers a highly dispersed form of Pd(II) supported on the high surface area zeolite.

引用

页码：275 / 282

页数：8

共 28 条

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