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Hydrogenation catalyst, preparation method and application thereof, and hydrogenation reaction method

A hydrogenation catalyst and hydrogenation reaction technology, applied in catalyst activation/preparation, hydrogenation preparation, chemical elements of heterogeneous catalysts, etc., can solve the problems of difficult continuous production and low activity, and achieve high product quality and high catalytic activity. , product quality and stable effect

Active Publication Date: 2022-06-21
HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the low activity of the existing nickel-based catalyst in the hydrogenation reaction of bisphenol A, the hydrogenation reaction needs to be carried out at a relatively high temperature, and it is difficult to realize the shortage of continuous production, and a hydrogenation catalyst is provided , the catalyst shows significantly improved catalytic activity in the hydrogenation reaction of bisphenol A, can carry out the hydrogenation reaction at a lower temperature, and can obtain higher catalytic activity

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  • Hydrogenation catalyst, preparation method and application thereof, and hydrogenation reaction method
  • Hydrogenation catalyst, preparation method and application thereof, and hydrogenation reaction method
  • Hydrogenation catalyst, preparation method and application thereof, and hydrogenation reaction method

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preparation example Construction

[0044] According to a second aspect of the present invention, the present invention provides a method for preparing a hydrogenation catalyst, the method comprising the following steps:

[0045] (1) contacting the precipitating agent with a solution containing a nickel compound and a zirconium compound, and separating the solid-phase substance from the mixture obtained by contacting to obtain a precipitate;

[0046] (2) mixing the precipitate with a VIB group metal compound and an aluminum-containing compound, and successively drying, calcining and molding the obtained mixture to obtain a catalyst precursor, wherein the VIB group metal compound is a group VIB metal oxide compounds and / or precursors of Group VIB metal oxides, said aluminum-containing compounds being alumina and / or precursors of alumina;

[0047] (3) contacting the catalyst precursor with a reducing agent under reduction reaction conditions.

[0048] In step (1), the nickel compound and the zirconium compound ar...

preparation example 1

[0103] In this embodiment, the hydrogenation catalyst A is: based on the total amount of the catalyst, the content of nickel element is 30% by weight, the molybdenum oxide (MoO 3 ) content was 5% by weight, the content of zirconia was 20% by weight, and the content of alumina was 45% by weight. Prepared in the following way:

[0104] (1) The aqueous solution containing nickel nitrate and zirconium nitrate and the aqueous solution containing sodium hydroxide and sodium carbonate (the molar ratio of sodium hydroxide: sodium carbonate is 1:2) are co-currently co-currently mixed at 40°C with stirring. Precipitation, controlling the pH value of the end point to be 11, filtering the obtained reaction mixture, and washing the collected solid matter with deionized water 5 times to obtain a nickel-zirconium coprecipitate.

[0105] (2) The nickel-zirconium precipitate is mixed with molybdenum oxide and pseudo-boehmite, slurried, then dried at 120°C for 6 hours, and then calcined at 500...

preparation example 2

[0108] In this preparation example, the hydrogenation catalyst B is: based on the total amount of the catalyst, the content of nickel element is 50% by weight, the content of molybdenum oxide is 0.5% by weight, the content of zirconia is 30% by weight, and the content of alumina is 19.5% by weight . Prepared in the following way:

[0109] (1) Mix an aqueous solution containing nickel chloride and zirconium chloride with an aqueous solution containing potassium hydroxide and sodium carbonate (the molar ratio of potassium hydroxide:sodium carbonate is 1:3) at 60°C with stirring. Flow co-precipitation, controlling the pH value of the end point to be 12, filtering the obtained reaction mixture, washing the collected solid material with deionized water 6 times to obtain nickel-zirconium co-precipitate.

[0110] (2) The nickel zirconium precipitate is mixed with molybdenum oxide and pseudo-boehmite, slurried, then dried at 100°C for 6 hours, then calcined at 400°C for 5 hours, and ...

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Abstract

The invention discloses a hydrogenation catalyst as well as a preparation method and application thereof, and further discloses a hydrogenation reaction method adopting the hydrogenation catalyst. The hydrogenation catalyst contains a binder and active components, the active components contain nickel and VIB family metal elements, and the binder contains zirconium oxide and aluminum oxide. The catalyst provided by the invention takes nickel as a main active component and is low in cost. Moreover, the catalyst according to the present invention shows improved catalytic activity in the hydrogenation reaction of phenolic compounds, especially improved low-temperature reaction activity. The catalyst disclosed by the invention is suitable for a continuous production process, so that continuous preparation of a hydrogenated bisphenol A product can be realized, and the product quality is high and stable.

Description

technical field [0001] The present invention relates to a hydrogenation catalyst and a preparation method and application thereof, and also relates to a hydrogenation reaction method using the hydrogenation catalyst. Background technique [0002] Hydrogenated Bisphenol A (HBPA, CAS: 1980-4-6, C 15 H 28 O 2 ), is the alicyclic diol obtained by hydrogenating and saturating the two benzene rings in the bisphenol A molecule, and is the key to preparing polymers such as epoxy resins, polycarbonates, polyacrylic resins and unsaturated resins, etc. One of the monomers. Compared with bisphenol A, hydrogenated bisphenol A has significantly improved thermal stability, chemical stability and weather resistance, is more suitable for outdoor engineering, and is more beneficial to human health. [0003] The preparation of hydrogenated bisphenol A is similar to the hydrogenation of benzene rings, usually using nickel-based catalysts or precious metal catalysts. For example, US2118954 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J37/03B01J37/08B01J37/18C07C29/20C07C35/21
CPCB01J23/883B01J37/03B01J37/088B01J37/18B01J37/0009B01J23/002C07C29/20C07C2601/14B01J2523/00C07C35/21B01J2523/31B01J2523/48B01J2523/68B01J2523/847B01J37/08Y02P20/52B01J21/066B01J23/85B01J37/031C07C35/08B01J35/394B01J21/04B01J37/0236B01J37/04
Inventor 向明林敖博汪永军周冬京简振兴佘喜春
Owner HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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