The impact of the "memory effect" on the catalytic activity of Mg/Al;: Mg,Zn/Al;: Mg/Al,Ga hydrotalcite-like compounds used as catalysts for cycloxene epoxidation

被引：57

作者：

Angelescu, E. ^{[1
]}

Pavel, O. D. ^{[1
]}

Birjega, R. ^{[2
]}

Florea, M. ^{[1
]}

Zavoianu, R. ^{[1
]}

机构：

[1] Univ Bucharest, Fac Chem, Dept Chem Technol & Catalysis, Bucharest 030018, Romania

[2] Natl Inst Lasers Plasma & Radiat Phys, Bucharest, Romania

来源：

APPLIED CATALYSIS A-GENERAL | 2008年 / 341卷 / 1-2期

关键词：

epoxidation of cyclohexene; hydrotalcites and mixed oxides catalysts; memory effect;

D O I：

10.1016/j.apcata.2007.12.022

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 epoxidation of cyclohexene by hydrogene peroxide and benzonitrile, in methanol as solvent on solid base catalysts, hydrotalcites (HT) and corresponding mixed oxides (C-HT) was investigated. The employed catalysts were as-synthesized Mg/Al; Mg,Zn/Al; Mg/Ga,Al hydrotalcites, their derived mixed oxides and the corresponding reconstructed hydrotalcite forms (R-HT) obtained via the "memory effect" upon a rehydration treatment of C-HT. The catalysts were characterized by XRD, CO2-TPD and N-2 adsorption-desorption measurements. The reconstructed HT samples exhibit higher activity in comparison to the as-synthesized carbonated HT samples. A tentative correlation of the catalytic properties with the base strength of the active sites, the structural and textural characteristics of the catalysts, has been explored. (c) 2008 Published by Elsevier B.V.

引用

页码：50 / 57

页数：8

共 40 条

[21] REACTIONS OF HYDROGEN PEROXIDE .9. OXIDATION OF CYANOPYRIDINES [J].

PAYNE, GB .

JOURNAL OF ORGANIC CHEMISTRY, 1961, 26 (03) :668-&

[22] A SIMPLIFIED PROCEDURE FOR EPOXIDATION BY BENZONITRILE-HYDROGEN PEROXIDE - SELECTIVE OXIDATION OF 2-ALLYLCYCLOHEXANONE [J].

PAYNE, GB .

TETRAHEDRON, 1962, 18 (JUN) :763-&

[23] REACTIONS OF HYDROGEN PEROXIDE .6. ALKALINE EPOXIDATION OF ACRYLONITRILE [J].

PAYNE, GB ;

WILLIAMS, PH .

JOURNAL OF ORGANIC CHEMISTRY, 1961, 26 (03) :651-&

[24] RECENT ADVANCES IN THE PREPARATION AND SYNTHETIC APPLICATIONS OF OXIRANES [J].

RAO, AS ;

PAKNIKAR, SK ;

KIRTANE, JG .

TETRAHEDRON, 1983, 39 (14) :2323-2367

[25] Activation of Mg-Al hydrotalcite catalysts for aldol condensation reactions [J].

Rao, KK ;

Gravelle, M ;

Valente, JS ;

Figueras, F .

JOURNAL OF CATALYSIS, 1998, 173 (01) :115-121

[26] Alkali promoted selective epoxidation of styrene to styrene oxide using TS-1 catalyst [J].

Rode, CV ;

Nehete, UN ;

Dongare, MK .

CATALYSIS COMMUNICATIONS, 2003, 4 (08) :365-369

[27] A practical method for epoxidation of terminal olefins with 30% hydrogen peroxide under halide-free conditions [J].

Sato, K ;

Aoki, M ;

Ogawa, M ;

Hashimoto, T ;

Noyori, R .

JOURNAL OF ORGANIC CHEMISTRY, 1996, 61 (23) :8310-8311

[28] Selective epoxidations involving anionic peroxotungsten compounds generated in situ on layered double hydroxides with various polarities [J].

Sels, BF ;

DeVos, DE ;

Jacobs, PA .

TETRAHEDRON LETTERS, 1996, 37 (47) :8557-8560

[29] REVISED EFFECTIVE IONIC-RADII AND SYSTEMATIC STUDIES OF INTERATOMIC DISTANCES IN HALIDES AND CHALCOGENIDES [J].

SHANNON, RD .

ACTA CRYSTALLOGRAPHICA SECTION A, 1976, 32 (SEP1) :751-767

[30]

SMITH GJ, 1984, SYNTHESIS-STUTTGART, P689

← 1 2 3 4 →