Modified supported copper-rhenium bimetallic catalyst and its preparation method and application

A bimetallic catalyst and supported technology, which is applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problem of low conversion rate of reaction substrates, low selectivity of target products, and the use of Reduced lifespan, oligomerization and other problems, to achieve excellent hydrogenation activity, prolong service life, high activity effect
CN109731581BActive Publication Date: 2022-01-07WANHUA CHEM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WANHUA CHEM GRP CO LTD
Publication Date
2022-01-07

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Abstract

The invention discloses a supported copper-rhenium bimetallic catalyst. The catalyst comprises an active body, an active auxiliary agent, an alkali auxiliary agent and a carrier; the chemical composition of the active main body is Cu x Re (1‑x) O, wherein x is 0.7-0.9. The invention provides a preparation method of a catalyst, comprising: (1) dissolving a copper-containing compound, a rhenium-containing compound, a coagent precursor and a base auxiliary precursor in water, configuring a mixed salt solution, and dispersing the carrier in the mixing Obtain a slurry in a saline solution; (2) drop an alkaline precipitant into the slurry and adjust its pH value to 7-9, age to obtain a slurry, and control the temperature to 60-90°C during the dropping process; (3) The slurry is post-treated to obtain a supported copper-rhenium bimetallic catalyst. The invention provides a preparation method and application of a modified supported copper-rhenium bimetallic catalyst. The modified supported copper-rhenium bimetallic catalyst provided by the invention has higher reactivity and glycol selectivity.
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Description

technical field

[0001] The invention belongs to the technical field of catalytic hydrogenation, and in particular relates to a catalyst for hydrogenating dibasic acid dimethyl to dibasic alcohol, a preparation method and application thereof. Background technique

[0002] Mixed dibasic acid is the main by-product of the production of adipic acid, the raw material of nylon 66. How to effectively use its methylated product, mixed dibasic acid dimethyl ester, is a problem faced by all domestic adipic acid enterprises. Dimethyl dibasic acid can be converted into mixed dibasic alcohol by means of catalytic hydrogenation. It is an important organic chemical raw material and can be used to synthesize superfiber polyester fiber, high-end automotive interior, high-grade leather clothing, luggage fabrics, etc. Its future development prospects are very broad. The product can also be used in the production of resins, synthetic plasticizers, etc. In addition, high value-added chemicals ...

Claims

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