Supported catalyst, and preparation method and application thereof

Abstract

The invention provides a supported catalyst, and a preparation method and application thereof, and particularly relates to the supported catalyst, the preparation method of the supported catalyst andapplication of the supported catalyst in catalyzing synthesis of tertiary carboxylic acid. The supported catalyst comprises a carrier and an active component supported on the surface of the carrier, wherein the carrier is a polymer with an active hydrogen group, and the active component is boron trifluoride. According to the supported catalyst, a polymer with an active hydrogen group is used as acarrier, and boron trifluoride is used as an active component, so the catalyst has a relatively large specific surface area, relatively good rigidity and activity, is not easy to collapse and block ina using process, and has relatively high recycling times; during catalysis synthesis of tert-carbonic acid with the catalyst, the yield and the purity of the tert-carbonic acid can be improved, catalyst consumption can be reduced, and the occurrence of the side reactions and the generation of three wastes during the preparation process can be reduced; and the supported catalyst has high practicalvalue, and the industrial large-scale production application of the catalyst is easily achieved.

Description

technical field [0001] The invention belongs to the field of chemistry, and relates to a supported catalyst, its preparation method and application, in particular to a supported catalyst, its preparation method and its application in the synthesis of catalyzed tertiary carbonic acid. Background technique [0002] Tertiary carbonic acid, also known as new acid or trialkylacetic acid, is a kind of branched monobasic saturated carboxylic acid and an important branch of industrial fatty acids. Due to the steric effect, the reaction on the carboxyl group of the tertiary carbonic acid is much more difficult than that of the primary carbonic acid, so the chemical properties of its derivatives are relatively stable. Tertiary carbonates have excellent hydrolysis resistance. In addition, they also have high heat resistance, weather resistance and discoloration resistance. Therefore, it is widely used in many fields such as coatings, medicine, and pesticides. [0003] At present, the...

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Problems solved by technology

[0005] The main problems existing in the existing preparation technology and the above-mentioned preparation method are: (1) using concentrated sulfuric acid or boron trifluoride as a catalyst, the material is highly corrosive, and the homogeneous catalytic reaction consumes a large amount of acid, producing a large amount of Acid waste liquid has high treatment costs. If the catalyst is used mechanically, the process is very complicated, and the catalyst will also be significantly lost and deactivated; (2) Silver or copper needs to be added as a cocatalyst during the reaction process, which brings a series of cost and separation problems; (3) Toxic and harmful carbon monoxide is used as a raw material in the preparation process, which is not conducive to industrial production and application; in general, the above-mentioned method has problems such as complicated process, more three wastes and high production cost

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