Method for directly preparing low-carbon alcohol and co-producing gasoline through CO2 hydrogenation

A low-carbon alcohol, direct technology, applied in the direction of chemical instruments and methods, preparation of hydroxyl compounds, organic compounds, etc., can solve the problem of low activity of low-carbon alcohols, achieve high conversion rate of CO2, novel reaction process, combination method simple effect
CN112430472AInactive Publication Date: 2021-03-02WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2021-03-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of catalysts, and particularly relates to a method for directly preparing low-carbon alcohol and co-producing gasoline by CO2 hydrogenation, which comprises the following steps: (1) reducing a catalyst for a certain time at a certain temperature in an atmosphere containing H2, and activating for a certain time at a certain pressure and a certain temperature in an atmosphere containing CO2 / H2 to obtain a pretreated catalyst; (2) applying the pretreated catalyst to catalytic reaction to prepare low-carbon alcohol and co-produce gasoline; wherein the catalyst in the step (1) comprises K2O-CuO-MgO-ZnO-Fe2O3. According to the method, the reaction steps are remarkably shortened, and the catalytic efficiency is improved; the one-way CO2 conversion rateis high (greater than 40%); the space-time yield of the low-carbon alcohol is as high as 114.3 mg / gcat / h, and gasoline can be co-produced; the catalyst combination mode is simple, and industrial production is easy.
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Description

technical field

[0001] The invention belongs to the technical field of catalysts, in particular to a CO 2 A method for directly preparing low-carbon alcohol co-production gasoline by hydrogenation. Background technique

[0002] Extensive use of fossil fuels has resulted in a large amount of greenhouse gas CO 2 emissions from CO 2 Environmental problems are becoming increasingly prominent. At the same time, as an important carbon resource, the CO 2 Transformation into high value-added chemicals has important application prospects and is also an important way for sustainable development. Low-carbon mixed alcohols (referred to as low-carbon alcohols) have a high octane number and can be used as clean fuels, as well as gasoline additives, such as ethanol gasoline that is being vigorously promoted. Low-carbon alcohols are also good solvents and industrial raw materials, and are widely used in various chemical industries. At present, low-carbon alcohols in industry mainly co...

Claims

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