Reducing methane formation in methanol to olefins reaction on metal impregnated SAPO-34 molecular sieve

被引：47

作者：

Obrzut, DL ^{[1
]}

Adekkanattu, PM ^{[1
]}

Thundimadathil, J ^{[1
]}

Liu, J ^{[1
]}

Dubois, DR ^{[1
]}

Guin, JA ^{[1
]}

机构：

[1] Auburn Univ, Dept Chem Engn, Auburn, AL 36849 USA

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 2003年 / 80卷 / 01期

关键词：

silicoaluminophosphate; SAPO-34; metal impregnation; methanol conversion;

D O I：

10.1023/A:1026088327000

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：

SAPO-34 silicoaluminophosphate molecular sieve produces large amounts of methane at elevated temperatures in the methanol to olefins (MTO) process. This significantly reduces the lower olefins selectivity - a key factor in determining the commercial viability of this catalyst. Impregnation of the SAPO-34 molecular sieve with metal ions such as K, Cs, Pt, Ag and Ce was found to reduce the amount of methane significantly at higher temperatures thereby increasing the lower olefins selectivity. This observed effect is less apparent at lower temperatures where the amount of methane formed is generally low.

引用

页码：113 / 121

页数：9

共 8 条

[1] A THEORETICAL-STUDY OF PDCONA AND [PDCONA]+ COMPLEXES AS A SIMPLE-MODEL OF A PROMOTED CATALYST [J].