氧化铈负载的介孔材料MCM-41和SBA-15上β-香芹醇的选择性制备

Selective Preparation of -Carveol over Ceria Supported Mesoporous Materials MCM-41 and SBA-15.

作者信息

Stekrova Martina, Kumar Narendra, Mäki-Arvela Päivi, Ardashov Oleg V, Volcho Konstantin P, Salakhutdinov Nariman F, Murzin Dmitry Yu

机构信息

Laboratory of Industrial Chemistry and Reaction Engineering, Åbo Akademi University, Biskopsgatan 8, Turku 20500, Finland.

Department of Organic Technology, Institute of Chemical Technology Prague, Technická 5, Prague 16000, Czech Republic.

出版信息

Materials (Basel). 2013 May 17;6(5):2103-2118. doi: 10.3390/ma6052103.

DOI:10.3390/ma6052103

PMID:28809263

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5452500/

Abstract

Ce-modified mesoporous silica materials MCM-41 and SBA-15, namely 32 wt % Ce-Si-MCM-41, 16 wt % Ce-H-MCM-41 and 20 wt % Ce-Si-SBA-15, were prepared, characterized and studied in the selective preparation of -carveol by α-pinene oxide isomerization. The characterizations of these catalysts were performed using scanning electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption and FTIR pyridine adsorption. Selective preparation of -carveol was carried out in the liquid phase in a batch reactor. The activity and the selectivity of catalyst were observed to be influenced by their acidity, basicity and morphology of the mesoporous materials. The formation of -carveol is moreover strongly influenced by the basicity of the used solvent and in order to achieve high yields of this desired alcohol it is necessary to use polar basic solvent.

摘要

制备了铈改性的介孔二氧化硅材料MCM-41和SBA-15，即32 wt%的Ce-Si-MCM-41、16 wt%的Ce-H-MCM-41和20 wt%的Ce-Si-SBA-15，并对其进行了表征，同时研究了它们在α-蒎烯氧化物异构化选择性制备香芹醇中的应用。使用扫描电子显微镜、X射线光电子能谱、氮气吸附和傅里叶变换红外光谱吡啶吸附对这些催化剂进行了表征。在间歇式反应器中于液相中进行香芹醇的选择性制备。观察到催化剂的活性和选择性受其酸度、碱度以及介孔材料形态的影响。此外，香芹醇的形成受到所用溶剂碱度的强烈影响，为了获得这种所需醇的高产率，有必要使用极性碱性溶剂。