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Preparation method of high-mechanical-strength copper-based hydrogenation catalyst

A hydrogenation catalyst and mechanical strength technology, applied in the preparation of organic compounds, catalyst activation/preparation, preparation of hydroxyl compounds, etc., can solve the problems of higher requirements and distance, and achieve the effect of superior reactivity

Pending Publication Date: 2021-11-05
濮阳圣恺环保新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalysts prepared by the above method can meet the needs of production, but there is still a distance from higher requirements

Method used

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  • Preparation method of high-mechanical-strength copper-based hydrogenation catalyst
  • Preparation method of high-mechanical-strength copper-based hydrogenation catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A preparation method of a copper-based hydrogenation catalyst, comprising the steps of:

[0027] 1) Weigh 120.0g Cu(NO 3 ) 2 ·3H 2 O (0.5mol), 60g Mn(NO 3 ) 2 and 40g Zn(NO 3 ) 2 ·6H 2 O dissolved in 2000ml H 2 O is made into a mixed salt solution;

[0028] 2) Dissolve 250g 25% ammonia water in 2000ml H 2 In O, the alkaline solution used as precipitating agent is obtained;

[0029] 3) Prepare 500g containing 10g seed crystal (corresponding hydroxide, ie Cu(OH) 2 , Mn(OH) 2 , Zn(OH) 2 ), a saturated hydroxide solution at a temperature of 200°C; that is, a saturated Cu(OH) solution with a temperature of 200°C and a seed crystal 2 , Mn(OH) 2 and Zn(OH) 2 aqueous solution;

[0030] 4) Simultaneously pump the mixed salt solution in step 1) and the alkali solution in step 2) into the saturated hydroxide solution in step 3) containing 10g of seed crystals and at a temperature of 200°C, and adjust the feed rate to ensure the mixed salt solution and alkali The s...

Embodiment 2

[0033] The difference between this embodiment and embodiment 1 is: in step 1), 40g Zn(NO 3 ) 2 ·6H 2 O was replaced by 34g Al(NO 3 ) 3 9H 2 O, the alkali solution used in step 2) is 10% sodium hydroxide solution (the molar number of sodium hydroxide is the same as that of ammonia); the copper-based catalyst Cat-02 is obtained.

Embodiment 3

[0035] The difference between this embodiment and embodiment 1 is: in step 1), 60g Mn(NO 3 ) 2 Replaced with 84g Al(NO 3 ) 3 9H 2 O, the amount of water used to prepare the mixed salt solution is 1500ml; the copper-based catalyst Cat-03 is obtained.

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Abstract

The invention relates to a preparation method of a high-mechanical-strength copper-based hydrogenation catalyst, which comprises the following steps: pumping a mixed salt solution of soluble copper salt and other metal soluble salts and an alkali solution in parallel into a seed crystal-containing high-temperature saturated hydroxide solution, carrying out high-temperature reaction crystallization to prepare hydroxide, cooling, filtering, washing, drying and roasting to obtain the high-mechanical-strength copper-based catalyst. The copper-based catalyst prepared by the method has the characteristics of uniform particles, large particle size, high mechanical strength, high activity and high selectivity, is especially suitable for being used as a hydrogenation catalyst for preparing butanediol by hydrogenation of dimethyl maleate / dimethyl succinate and for preparing 1, 4-cyclohexanedimethanol by hydrogenation of dimethyl 1, 4-cyclohexanedicarboxylate, and is especially suitable for fluidized bed hydrogenation reaction processes.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation catalysts, in particular to a method for preparing a copper-based hydrogenation catalyst with high mechanical strength, which is particularly suitable for the hydrogenation of dimethyl maleate / dimethyl succinate to prepare butanediol, and A hydrogenation catalyst for hydrogenating dimethyl 1,4-cyclohexanedicarboxylate to produce 1,4-cyclohexanedimethanol, especially suitable for fluidized bed hydrogenation reaction process. Background technique [0002] There are many preparation methods for copper-based hydrogenation catalysts, most of which are to uniformly mix or highly disperse the active ingredient copper and additives on zinc oxide, aluminum oxide, silicon oxide, chromium oxide and other carriers through impregnation, precipitation and other techniques, such as CuO-ZnO, CuO-Al 2 o 3 、CuO-Cr 2 o 3 , CuO / SiO 2 Catalyst products with catalytic function can be prepared into powder, fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/60B01J23/656B01J37/03B01J37/08C07C29/149C07C31/27C07C31/20
CPCB01J23/6562B01J23/002B01J37/03B01J37/082B01J23/60C07C29/149B01J2523/00C07C2601/14B01J2523/17B01J2523/27B01J2523/72B01J2523/31C07C31/207C07C31/276
Inventor 赖玉龙陈玮刘千河陈志勇闫勇邢培智连虎强梁培彤魏月明董红明徐晓飞王士振
Owner 濮阳圣恺环保新材料科技股份有限公司
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