SYNTHESIS AND CATALYTIC PROPERTIES OF SUBSTITUTED ALPO4-31 MOLECULAR-SIEVES

被引：39

作者：

ZUBOWA, HL ^{[1
]}

RICHTER, M ^{[1
]}

ROOST, U ^{[1
]}

PARLITZ, B ^{[1
]}

FRICKE, R ^{[1
]}

机构：

[1] ZENTRUM HETEROGENE KATALYSE, RUDOWER CHAUSSEE 5, W-1199 BERLIN, GERMANY

来源：

CATALYSIS LETTERS | 1993年 / 19卷 / 01期

关键词：

ALUMINOPHOSPHATE MOLECULAR SIEVES; SI AND OR MN MODIFICATION; ISOMERIZATION OF 1-BUTENE;

D O I：

10.1007/BF00765202

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：

Molecular sieve AlPO4-31 and substituted analogues (MnAPO-31, SAPO-31, MnAPSO-31) have been tested for their catalytic properties in the isomerization of 1-butene over 6 h time on stream at 743 K. The conversion of 1-butene proceeds selectively by either double bond or skeletal isomerization. MnAPSO-31 with a molar MnO/P2O5 ratio adjusted to 0.01 yields the highest percentage of isobutene whereas the parent AlPO4-31 leads almost completely to a double bond shift with only minor skeletal isomerization. The results are related to the acidity characteristics that were determined by ammonia thermodesorption. Deactivation is accompanied by a loss of selectivity for the skeletal isomerization.

引用

页码：67 / 79

页数：13

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