EFFECT OF NA+ ON SULFATION AND RELATED REACTIONS OVER A COMMERCIAL CLAUS ALUMINA CATALYST

被引：8

作者：

GEORGE, ZM ^{[1
]}

BENSITEL, M ^{[1
]}

LION, M ^{[1
]}

SAUR, O ^{[1
]}

LAVALLEY, JC ^{[1
]}

机构：

[1] UNIV CAEN, INST SCI MAT & RAYONNMENT, SPECTROCHIM LAB, UA 414, F-14032 CAEN, FRANCE

来源：

APPLIED CATALYSIS | 1988年 / 43卷 / 01期

关键词：

Catalysis - Catalysts - Alumina - Sulfur Dioxide - Chemical Reactions;

D O I：

10.1016/S0166-9834(00)80909-4

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 influence of Na+ on the nature of sulphate species, alumina sulphation and the regeneration of spent Claus alumina catalyst either by hydrogen sulphide reduction or water leaching has been studied by Fourier transform-IR spectroscopy and microgravimetry. Na+ strongly modifies the nature of sulphate species on alumina, leading to mixed sodium aluminium sulphate and sodium sulphate species. Na+ appears to promote sulphur dioxide adsorption and catalyst sulphation, the latter occurring at a lower temperature. It does not affect the reducibility of sulphate by hydrogen sulphide, which is found to be a slow process, but Na+ facilitates the removal of sulphate species by water leaching and this appears to be an efficient process for elimination of sulphate.

引用

页码：167 / 176

页数：10

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