Catalytic performance of montmorillonite clay ion-exchanged with ionic liquids in the cycloaddition of carbon dioxide to allyl glycidyl ether
Catalytic performance of montmorillonite clay ion-exchanged with ionic liquids in the cycloaddition of carbon dioxide to allyl glycidyl ether
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DOI：
10.1016/j.cattod.2012.04.049
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发表时间：
2013-02-01
期刊：
影响因子：
5.3
通讯作者：
Park, Dae-Won
中科院分区：
文献类型：
--
作者：
Kim, Moon-Il;Kim, Dong-Kyu;Park, Dae-Won
In this study, various ionic liquids immobilized onto montmorillonite clay (IL-MMT) were prepared by ion-exchange reaction between the ionic liquids and ions in the clay interlayer. Tetra-alkyl ammonium chlorides were used as the ionic liquid precursors. The IL-MMTs were characterized by elemental analyses (EA), BET, XRD, C-13 NMR, FT-IR, and SEM. The surface areas and d-spacings of the IL-MMTs increased with increasing alkyl chain lengths. The IL-MMTs showed good catalytic activity for the synthesis of the cyclic carbonate from alkyl glycidyl ether (AGE) and carbon dioxide. The effects of the IL cation structure, and reaction parameters such as temperature and CO2 pressure on the reactivity of IL-MMTs were also discussed. The catalyst could be reused in up to four consecutive runs without a significant reduction in the initial activity. (C) 2012 Elsevier B.V. All rights reserved.
