Catalyst for hydrogenolysis and preparation method thereof

A catalyst and oxide technology, used in catalysts, hydrogenation to hydrocarbons, molecular sieve catalysts, etc., can solve the problems of low reaction conversion rate of copper-based catalysts, high reaction conditions, high reaction temperature and pressure, etc., and achieve high conversion rate. and the effect of target product selectivity, high reactivity, high conversion and selectivity

Active Publication Date: 2020-02-21
HONGBAOLI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Usually only one of palladium, nickel, copper, etc. is used as a hydrogenolysis catalyst, and each single metal catalyst has certain defects in the actual application process: the palladium-based hydrogenolysis conversion rate is relatively h

Method used

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  • Catalyst for hydrogenolysis and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1

[0035] The 1# catalyst contains 80.0% copper, 2.0% nickel, 0.01% palladium, 0.5% chromium oxide, 1.5% zinc oxide, and 15.99% alumina in terms of mass percentage.

[0036] A first metal salt solution with a total concentration of 0.5 mol / L and a second metal salt solution with a total concentration of 0.5 mol / L are prepared. The second metal salt solution is a mixed salt solution of chromium nitrate and zinc nitrate.

[0037] Put 1.5L of deionized water into a reaction vessel with a stirring blade. After the temperature is raised to 80°C, add 0.5mol / L sodium carbonate solution and the first metal salt solution dropwise at the same time under stirring. The mass ratio of the salt solution is 2:1. After the dripping is completed, the reaction is continued at 80°C for 2 hours, the pH is adjusted to 7.5-8.0, and the required amount of the second metal salt solution and alumina are added. After fully reacting, it is filtered and washed with water, dried and formed and c...

Example Embodiment

[0038] Example 2

[0039] 2# catalyst, in terms of mass percentage, contains 40.0% copper, 8.0% nickel, 0.05% palladium, 1.0% magnesium oxide, 0.5% barium oxide, 0.5% lead oxide, 1.5% chromium oxide, and 48.45% silicon oxide.

[0040] Prepare a first metal salt solution with a total concentration of 0.6 mol / L and a second metal salt solution with a total concentration of 0.6 mol / L. The second metal salt solution is a mixture of magnesium hydrochloride, barium hydrochloride, lead hydrochloride and chromium hydrochloride Salt solution.

[0041] Put in 1.0L deionized water in a reaction vessel with a stirring blade, and after the temperature is raised to 85°C, add 0.5mol / L sodium carbonate solution and the first metal salt solution dropwise while stirring, and the sodium carbonate solution and the first metal The mass ratio of the salt solution is 3:1. After the dripping is completed, continue the reaction at 85°C for 1.5 hours, adjust the pH to 8.5-9.0, and add the required amount of...

Example Embodiment

[0042] Example 3

[0043] 3# catalyst, in terms of mass percentage, contains 60.0% copper, 3.0% nickel, 0.01% palladium, 1.5% zinc oxide, 1.0% lead oxide, 1.5% chromium oxide, and 32.99% molecular sieve.

[0044] A first metal salt solution with a total concentration of 0.2 mol / L and a second metal salt solution with a total concentration of 0.2 mol / L are prepared. The second metal salt solution is a mixed salt solution of zinc sulfate, lead sulfate and chromium sulfate.

[0045] Put 1.5L deionized water into a reaction vessel with a stirring blade, and after the temperature is raised to 90°C, add 0.3mol / L sodium carbonate solution and the first metal salt solution dropwise while stirring, and the sodium carbonate solution and the first metal The mass ratio of the salt solution is 2:1. After the dripping is completed, continue the reaction at 90°C for 0.5h, adjust the pH to 7.5-8.0, and add the required amount of the second metal salt solution and molecular sieve. After full reacti...

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Abstract

The invention discloses a catalyst for hydrogenolysis, which comprises the following components in percentage by mass: (a) 40-80% of component A; (b) 0.5 to 10% of a component B; (c) 0.01 to 1% of a component C; (d) 0.1 to 5% of a component D; and (e) 10-50% of a component E; the preparation method of the catalyst comprises the following steps: (1) dropwise adding a sodium carbonate solution and afirst metal salt solution into deionized water; (2) adding a second metal salt solution and the component E; and (3) filtering, forming and calcining the solution to form a catalyst finished product.According to the catalyst, a small amount of second metal components containing elements such as zinc, magnesium, calcium and barium are added into copper, nickel and palladium as main components, sothat the dispersion effect of the main components such as copper, nickel and palladium in the catalyst can be effectively improved, and meanwhile, the reaction activity and the reaction stability ofthe catalyst are improved.

Description

technical field [0001] The invention relates to a hydrogenolysis catalyst and a preparation method thereof. Background technique [0002] Propylene oxide is an important petrochemical organic raw material. The main production methods of this substance are chlorohydrin method and ethylbenzene peroxide method. The chlorohydrin method pollutes the environment seriously, and the ethylbenzene peroxide method has a large amount of co-produced by-product—styrene, so that the production cost of propylene oxide is affected by the price fluctuation of the co-product. In recent years, using cumene peroxide (CHP) as the oxygen source, the method of oxidizing propylene to produce propylene oxide has been gradually developed. This process is environmentally friendly and safe. The co-product α,α-dimethylbenzyl alcohol can be The hydrogenolysis reaction produces cumene, which can be returned to the peroxidation unit for recycling. Compared with the process of producing propylene oxide by ...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J29/00C07C1/20C07C1/207C07C5/03C07C15/073C07C15/085
CPCB01J23/8993B01J29/00B01J23/002C07C1/2076C07C5/03C07C1/20B01J2523/00C07C2523/89B01J2229/20B01J2523/27B01J2523/31B01J2523/67B01J2523/22B01J2523/25B01J2523/41B01J2523/44B01J2523/23C07C15/073C07C15/085Y02P20/52
Inventor 范春元黄东平魏斌赵德喜邢益辉
Owner HONGBAOLI GRP CO LTD
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