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Catalyst for preparation of hydrogenated bisphenol A

A hydrogenation bisphenol, hydrogenation catalyst technology, applied in the direction of physical/chemical process catalysts, hydrogenation preparation, organic chemistry, etc., can solve the problems of low load, aggravated dehydration by-product formation, unsuitable for industrial applications, etc., to improve activity and Effects of selectivity, life extension, and reduction of surface acidity of the carrier

Inactive Publication Date: 2013-02-13
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Judging from the existing bisphenol A hydrogenation technology, the current supported catalyst carriers are mainly alumina, silica or diatomaceous earth, all of which have high surface acidity, which aggravates the formation of dehydration by-products; Low, low load; homogeneous catalysts are inconvenient to prepare and use, not suitable for industrial applications

Method used

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  • Catalyst for preparation of hydrogenated bisphenol A
  • Catalyst for preparation of hydrogenated bisphenol A
  • Catalyst for preparation of hydrogenated bisphenol A

Examples

Experimental program
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preparation example Construction

[0022] The preparation of the composite carrier is as follows:

[0023] Take commercially available pseudo-boehmite and aluminum hydroxide powder and mix them into a uniform powder in a certain proportion, weigh quantitative dilute nitric acid, phosphoric acid and alkali metal nitrate to make an aqueous solution, and spray the prepared solution evenly in a kneader In the powder, after aging for a certain period of time, it is extruded on a twin-screw extruder, and after drying, it is roasted under preset temperature control to obtain a strip-shaped composite alumina, which is pulverized and sieved to obtain a certain particle size carrier to obtain this product. The composite modified catalyst carrier used in the invention.

[0024] The loading of active ingredients is as follows:

[0025] The active component is impregnated and loaded by the conventional impregnation method. The catalyst carrier is impregnated with a metered concentration of palladium, ruthenium or rhodium c...

Embodiment 1

[0030] Mix commercially available pseudo-boehmite and aluminum hydroxide powder in a certain proportion to form a uniform powder, weigh 3% dilute nitric acid aqueous solution (wt%), 85% phosphoric acid aqueous solution (wt%) and alkali metal sodium nitrate to prepare into an aqueous solution, spray the prepared solution evenly in the powder in a kneader, after aging for a certain period of time, extrude on a twin-screw extruder, dry at 120°C for 12 hours, and roast at 650°C for 6 hours to obtain a strip-shaped compound Alumina is added, crushed and sieved to take particles with a certain particle size as the carrier for carrier characterization. Prepare the following 1-7 carriers according to different raw material ratios:

[0031] Table 1 Preparation and characterization of composite alumina carrier

[0032]

[0033] It can be seen from Table 1 that carriers 1 to 5 are modified by compounding, and alkali metal sodium and phosphorus elements are introduced. Carriers 6 and ...

Embodiment 2

[0036]According to the powder formulation of carrier 5 in Table 1 and the carrier preparation method in Example 1, the alkali metal is replaced by 30g, 60g, and 100g of potassium nitrate respectively, to obtain the following carriers 8a, 8b, 8c, and the specific surface area corresponds to 132.17m2 / g, 128.60m2 / g, 130.47m2 / g, pore volume corresponding to 0.48ml / g, 0.51ml / g, 0.53ml / g, L acid strength corresponding to 4.61mmol / g, 3.52mmol / g, 3.19mmol / g , B acid strength corresponding to 0.41mmol / g, 0.36mmol / g, 0.32mmol / g, for the following examples.

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Abstract

The invention relates to a catalyst for preparation of hydrogenated bisphenol A. The catalyst comprises: by mass, 100 parts of modified compound alumina carriers and 1 to 3 parts of precious metals as active ingredients. The modified compound alumina carriers comprise: by mass, 30 to 80 parts of pseudo-boehmite, 10 to 40 parts of aluminum hydroxide, 1 to 5 parts of an alkali metal and 1 to 5 parts of phosphorus. The active ingredients comprise two of Pd, Ru and Rh. The modified compound alumina carriers are adopted and are loaded with multiple precious metals to form the catalyst which is a hydrogenation catalyst having high activity, high selectivity and high loading capacity. The catalyst can realize preparation of a high trans-form / trans-form ratio isomer product under the condition of a trace amount of a stabilizer.

Description

technical field [0001] The invention relates to a catalyst for preparing hydrogenated bisphenol A by catalytic hydrogenation of bisphenol A. Hydrogenated bisphenol A is prepared by hydrogenation reaction of bisphenol A. After saturated hydrogenation of two benzene rings, a cycloaliphatic dihydric alcohol is obtained, which is widely used as a fine chemical intermediate. The catalyst prepared in the invention is suitable for the catalytic hydrogenation process of bisphenol A, and has the characteristics of high load, high selectivity, and long life. The reaction system is equipped with a trace stabilizer, which can increase the trans / trans isomers in the product. content. Background technique [0002] Hydrogenated bisphenol A (HBPA for short) is mainly used in the manufacture of epoxy resins, unsaturated resins, polycarbonates, and polyacrylic resins. It has the advantages of thermal stability, chemical stability, and weather resistance, and has a wide range of applications....

Claims

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Application Information

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IPC IPC(8): B01J27/185C07C35/21C07C29/20
Inventor 王开林司晓郡张磊宁晓娟齐彦伟张怀国
Owner CHINA PETROLEUM & CHEM CORP
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