A kind of loaded perrhenate ionic liquid and preparation method thereof

A perrhenate, ionic liquid technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, organic chemistry, etc., can solve the problem of high cost of ionic liquids, large amount of catalysts, and difficult separation of products. and other problems, to achieve the effect of promoting the reaction process, reducing the dosage, reducing the dosage of catalyst and the cost of catalytic reaction
CN103464200BActive Publication Date: 2015-09-02LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
Publication Date
2015-09-02

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Abstract

The invention relates to a supported perrhenate ionic liquid as well as a preparation method thereof. The technical scheme adopted is as follows: the preparation method comprises the following steps: selecting MCM-41 (Mobil Composition of Matters) as a carrier material; firstly, carrying out a reaction on chloropropyl triethoxysilane and the MCM-41; grafting a chloropropyl silicon structure to the surface of the MCM-41, and removing the byproduct ethanol; then, adding N-methyl imidazole so as to quaternize to obtain MCM-41 supported alkyl imidazole chlorine salt; and further adding ammonium perrhenate, and converting the chlorine salt into perrhenate through double-decompose reaction to obtain the MCM-41 supported alkyl imidazole perrhenate ionic liquid. The molar ratio of the reaction materials chloropropyl triethoxysilane, N-methyl imidazole, the MCM-41 and perrhenate is 1:(4-1):(3-1):(10-0.1). The method is applicable to support of various different types of alkyl imidazole perrhenate ionic liquids.
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Description

technical field

[0001] The invention relates to a novel load-type ionic liquid, which uses chloropropyltriethoxysilane, MCM-41, N-methylimidazole and ammonium perrhenate as raw materials to synthesize the perrhenate load-type ionic liquid. Background technique

[0002] Perrhenate ionic liquid is a new type of green rare metal ionic liquid catalyst, which can efficiently catalyze the epoxidation of olefins, the oxidation of alcohols and aldehydes, and the oxidation of sulfur compounds. For example, in the olefin epoxidation reaction, rhenium ionic liquid is used as the reaction solvent and catalyst, and 30% hydrogen peroxide is used as the oxidant to epoxidize cyclooctene, and the yield of epoxide can reach more than 95%. However, due to the high cost and high viscosity of ionic liquids, resulting in a large amount of catalyst and difficult separation of products, their application is limited. Contents of the invention

[0003] The object of the present invention is to pro...

Claims

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