Chiral germanium zeotype with interconnected 8-, 11-, and 11-ring channels.: Catalytic properties

被引：43

作者：

Medina, ME ^{[1
]}

Iglesias, M ^{[1
]}

Snejko, N ^{[1
]}

Gutiérrez-Puebla, E ^{[1
]}

Monge, MA ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, Madrid 28049, Spain

来源：

CHEMISTRY OF MATERIALS | 2004年 / 16卷 / 04期

关键词：

D O I：

10.1021/cm0346879

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, structure, thermal stability, and catalytic properties are reported for a chiral germanate, Ge9O19(OH)(2)(N2C2H10)(2)(N2C2H8)(0.5)H2O, ICMM6. It is orthorhombic, of space group C222(1), and has unit cell dimensions a = 12.156(3) Angstrom, b = 13.960(4) Angstrom, c = 14.258(4) Angstrom, volume 2419.6(11) Angstrom(3), and Z = 4. Three kinds of interconnected helical 8-, 11-, and 11-rings channels are present in the 3D framework. ICMM6 is an active chiral catalyst for the Michael addition reaction and acetalization of aldehydes. It is stable in water and organic solvents and can be recovered and reused at least four times without losing either its structure or its reactivity.

引用

页码：594 / 599

页数：6

共 26 条

[1] Preparation of a composite γ-zirconium phosphate silica with large specific surface and its first characterisation as acid catalyst [J].