交联壳聚糖气凝胶修饰的金：合成、表征和催化应用。

Cross-linked chitosan aerogel modified with Au: Synthesis, characterization and catalytic application.

机构信息

Department of Nanochemistry, Nanotechnology Research Center, Urmia University, G. C. P. O. Box 165-5715944931, Urmia, Iran.

出版信息

Carbohydr Polym. 2018 Sep 15;196:494-500. doi: 10.1016/j.carbpol.2018.05.068. Epub 2018 May 24.

DOI:10.1016/j.carbpol.2018.05.068

PMID:29891323

Abstract

Dimercaprol as the chelating agent of Au(III) was loaded on chitosan aerogel. Dimercaprol supported on chitosan aerogel efficiently was complexed with Au(III). The new organometallic compound showed good catalytic activity in the oxidation reaction of some aliphatic alcohols, benzyl alcohol, and ethylbenzene. High conversions and excellent selectivities were obtained in the solvent-free oxidation reactions under mild reaction conditions. Also, turnover numbers were calculated for the oxidation reactions with 203, 134, 308, 282, 392, and 153 for 1-pentanol, 1-octanol, 2-propanol, 2-butanol, benzyl alcohol, and ethylbenzene, respectively. The organometallic compound is applicable as a heterogeneous Au(III) catalyst with high chemical stabilityand recyclability up to 6 times.

摘要

二巯丁二酸作为 Au(III)的螯合剂被负载在壳聚糖气凝胶上。负载在壳聚糖气凝胶上的二巯丁二酸与 Au(III)有效地形成配合物。这种新型有机金属化合物在一些脂肪族醇、苄醇和乙苯的氧化反应中表现出良好的催化活性。在温和的反应条件下，无溶剂氧化反应中获得了高转化率和优异的选择性。此外，用 1-戊醇、1-辛醇、2-丙醇、2-丁醇、苄醇和乙苯进行氧化反应的转化率分别为 203、134、308、282、392 和 153。该有机金属化合物可用作具有高化学稳定性和可重复使用性的非均相 Au(III)催化剂，可重复使用 6 次。