Impact of the memory effect on the catalytic activity of Li-Al hydrotalcite-like compounds for the cyanoethylation reaction

被引：18

作者：

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

Zavoianu, R. ^{[1
]}

Birjega, R. ^{[2
]}

Angelescu, E. ^{[1
]}

机构：

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

[2] Natl Inst Lasers Plasma & Radiat Phys, Magurele 077125, Romania

来源：

MATERIALS RESEARCH BULLETIN | 2010年 / 45卷 / 09期

关键词：

Cyanoethylation; Layered double hydroxides; Li-Al hydrotalcite; Memory effect; LAYERED DOUBLE HYDROXIDE; MIXED OXIDES; INTERCALATION; MG/AL; MECHANISM; EXCHANGE; ACID; GEL;

D O I：

10.1016/j.materresbull.2010.06.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The target of this work is to investigate structural and textural modifications of Li-Al hydrotalcite-like compounds by memory effect and their impact on the catalytic activity of these solids for the cyanoethylation reaction. The samples have been characterized by XRD, FT-IR. TG-DTG, surface area and porous structure. The catalytic test results showed that the reconstruction of the hydrotalcite leads to a decrease of the catalytic activity compared to the parent hydrotalcite. This fact may be related either to the smaller specific surface area of the reconstructed form or to the leaching of Li(+) during reconstruction. It has been also noticed that the calcination of Li-Al hydrotalcite leads to the formation of a alpha-LiAlO(2) stable phase. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1106 / 1111

页数：6

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