Towards molecular sieve inorganic catalysts that are akin to enzymes: studies of a selective cyclo-dimerization over ferrierite at ambient temperature

被引：8

作者：

Lee, SO

Sankar, G

Kitchin, SJ

Dugal, M

Thomas, JM

Harris, KDM ^{[1
]}

机构：

[1] Univ Birmingham, Sch Chem, Birmingham B15 2TT, W Midlands, England

[2] UCL Royal Inst Great Britain, Davy Faraday Res Lab, London W1X 4BS, England

来源：

CATALYSIS LETTERS | 2001年 / 73卷 / 2-4期

基金：

英国工程与自然科学研究理事会;

关键词：

Bronsted acid catalysis; zeolites; solid-state NMR spectroscopy; enzyme analogues;

D O I：

10.1023/A:1016626722806

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 solid-acid (Bronsted)-catalyzed cyclo-dimerization of 3-hydroxy-3-methylbutan-2-one (HMB) over a synthetic ferrierite molecular sieve is reported. HMB is a stable liquid at ambient temperatures but in acidic solutions it readily undergoes reaction to generate a variety of products. However. in the acidic molecular sieve catalyst studied here, only one product - the cyclic dimer (proven by in situ solid state C-13 NMR and other evidence) - is observed, together with some unreacted HMB. A plausible, proton-catalyzed mechanism is proposed, and prompts comparison between the cyclo-dimerization of HMB within ferrierite and the mode of action of certain enzymes.

引用

页码：91 / 94

页数：4

共 36 条

[1] CATALYSIS OF ETHYLENE DIMERIZATION BY COMPLEXATION WITH METAL RADICAL CATIONS - AN ABINITIO STUDY [J].