Heteropoly acid-based supported ionic liquid-phase catalyst for the selective oxidation of alcohols
Heteropoly acid-based supported ionic liquid-phase catalyst for the selective oxidation of alcohols
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DOI：
10.1016/j.jcat.2008.08.010
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发表时间：
2008-10-25
影响因子：
7.3
通讯作者：
Halligudi, S. B.
中科院分区：
文献类型：
--
作者：
Bordoloi, Ankur;Sahoo, Suman;Halligudi, S. B.
负载离子液体的策略已被应用于固定杂多酸，磷钒杂多酸，到离子液体改性的介孔二氧化硅SBA-15。该固载化催化剂在伯醇和仲醇的好氧氧化反应中表现出较高的活性。没有观察到伯醇过度氧化成羧酸。在伯醇、杂原子和烯丙基的存在下，仲醇被化学选择性氧化成酮。该催化剂可重复使用5次，活性无明显损失。(C)2008年爱思唯尔公司All rights reserved.
A supported ionic liquid strategy has been applied for the immobilization of a heteropolyacid, molybdovanadophosphoric acid, onto ionic liquid-modified mesoporous silica SBA-15. The immobilized catalyst demonstrated high activity in the aerobic oxidation of primary and secondary alcohols to aldehydes and ketones, respectively. No overoxidation of the primary alcohols to carboxylic acids was observed. Secondary alcohols were chemoselectively oxidized to ketones in the presence of primary alcohol, hetero atom, and allyl groups. This catalyst could be recycled five times without obvious loss of activity. (C) 2008 Elsevier Inc. All rights reserved.