MCM-41 TYPE MATERIALS WITH LOW SI/AL RATIOS

被引：56

作者：

KLOETSTRA, KR ^{[1
]}

ZANDBERGEN, HW ^{[1
]}

VANBEKKUM, H ^{[1
]}

机构：

[1] DELFT UNIV TECHNOL,MAT SCI LAB,2628 BL DELFT,NETHERLANDS

来源：

CATALYSIS LETTERS | 1995年 / 33卷 / 1-2期

关键词：

MCM-41; DENSE PHASE; TETRAHEDRAL ALUMINUM; CRYSTALLINITY;

D O I：

10.1007/BF00817055

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 synthesis of MCM-41 type materials with high amounts of tetrahedral aluminum is reported. Transmission electron microscopy with EDX elemental analysis shows that when using a tetraalkylammonium base in the synthesis of MCM-41 materials Si/Al ratios as low as 12 are possible. In all cases the MCM-41 materials contain an aluminum-rich dense phase in which the aluminum is also tetrahedrally coordinated. This dense phase consumes most of the aluminum of the synthesis mixture.

引用

页码：157 / 163

页数：7

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