a ni 2 Preparation method of p/nc catalyst, ni2p/nc catalyst and its application

A catalyst and cyclohexane technology, applied in the preparation of organic compounds, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as unsuitable for large-scale production, low conversion rate of reactants, low product selectivity, etc. , to achieve good hydrogenation effect, low requirements for reaction equipment, and high reaction yield

Active Publication Date: 2022-05-03
RUNTAI CHEM TAIXING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, in the production process for preparing dioctyl cyclohexane-1,2-dicarboxylate, the conversion rate of the reactant is low, the selectivity of the product is low, and it is not suitable for large-scale production

Method used

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  • a ni <sub>2</sub> Preparation method of p/nc catalyst, ni2p/nc catalyst and its application
  • a ni <sub>2</sub> Preparation method of p/nc catalyst, ni2p/nc catalyst and its application
  • a ni <sub>2</sub> Preparation method of p/nc catalyst, ni2p/nc catalyst and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Ni in this example 2 The preparation method of P / NC catalyst comprises the following steps:

[0037] 1) 400ml of a mixed solution composed of absolute ethanol and water at a volume ratio of 1:1, add the above mixed solution to the agitator, adjust the speed of the agitator to 500r / min, stir, add 5g of polyoxyethylene polyoxypropylene The ether block copolymer was continued to stir for 1 h; then 2.5 g of dopamine was added and continued to stir for 2 h, and 2.5 g of nickel nitrate hexahydrate was weighed, added to the above solution and continued to stir for 2 h; adding concentration was 6 ml of hydrochloric acid of 12 mol / l, and stirred for 2 h; Then slowly drop (two drops per second) 10ml of mesitylene, stir for 4h, take 25mL of ammonia water with a concentration of 6mol / l, drop by drop (one drop per second) into the above solution, and continue stirring for 4h; finally perform centrifugation, The precipitate after centrifugation was alternately washed five times with...

Embodiment 2

[0043] Ni in this example 2 The preparation method of P / NC catalyst comprises the following steps:

[0044] 1) 400ml of a mixed solution composed of absolute ethanol and water at a volume ratio of 1:1, add the above mixed solution into the agitator, adjust the speed of the agitator to 500r / min, stir, add 5g of polyoxyethylene polyoxypropylene Continue to stir the ether block copolymer for 1 hour; then add 2.5 g of dopamine and continue to stir for 2 hours, weigh 1.5 g of nickel nitrate hexahydrate, add the above solution and continue to stir for 2 hours; then add 6 ml of hydrochloric acid with a concentration of 12 mol / l, and stir for 2 hours; Slowly drop (two drops per second) 10ml of mesitylene, stir for 4 hours, take 25ml of ammonia water with a concentration of 6mol / l, drop by drop (one drop per second) into the above solution, and continue stirring for 4 hours; 70% ethanol aqueous solution and absolute ethanol were used to alternately wash the precipitate after centrifug...

Embodiment 3

[0050] Ni in this example 2 The preparation method of P / NC catalyst comprises the following steps:

[0051] 1) 600ml of a mixed solution composed of absolute ethanol and water at a volume ratio of 2:1, add the above mixed solution to the agitator, adjust the speed of the agitator to 300r / min, stir, add 5g of polyoxyethylene polyoxypropylene Continue to stir the ether block copolymer for 1h; then add 1g of dopamine and continue to stir for 2h, weigh 4g of nickel nitrate hexahydrate, add the above solution and continue to stir for 2h; then add 6ml of hydrochloric acid with a concentration of 12mol / L, stir for 2h; then slowly drop Add (two drops per second) 10ml of mesitylene, stir for 4 hours, take 25ml of ammonia water with a concentration of 6mol / L, drop by drop (one drop per second) into the above solution, and continue stirring for 3 hours; finally, perform centrifugation and use 70% The ethanol aqueous solution and absolute ethanol were used to alternately wash the precipi...

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Abstract

The invention relates to the technical field of catalysts, in particular to Ni 2 The preparation method of P / NC catalyst, Ni 2 P / NC catalyst and its application. Ni of the present invention 2 The preparation method of the P / NC catalyst comprises mixing water and ethanol, then adding polyoxyethylene polyoxypropylene ether block copolymer, stirring and mixing; adding dopamine, stirring, adding nickel nitrate hexahydrate, and stirring; then adding hydrochloric acid, and stirring; Continue to add mesitylene and stir; slowly drop ammonia water; centrifuge the above-prepared solution, wash, and finally dry and phosphate the product obtained by the above-mentioned reaction to obtain the product. Ni prepared by the present invention 2 The P / NC catalyst has large specific surface area, good dispersion and low production cost.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a Ni catalyst for the production of cyclohexane-1,2-dioctyl 2 The preparation method of P / NC catalyst, Ni 2 P / NC catalyst and its application. Background technique [0002] Dioctyl phthalate is a colorless or light yellow oily transparent liquid, soluble in most organic solvents and hydrocarbons, slightly soluble in glycerin and ethylene glycol, and has good compatibility with most industrial resins , is a common industrial raw material. Dioctyl cyclohexane-1,2-dicarboxylate is an environmentally friendly non-phthalate plasticizer, it has a structure similar to dioctyl phthalate, and has the The performance of ester, and the function is more excellent. The specific performance is: Dioctyl cyclohexane-1,2-dicarboxylate has little mobility, is colorless and transparent, and is completely environmentally friendly. It can be miscible with common organic solvents and common plas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J27/185C07C67/303C07C69/75
CPCB01J27/24B01J27/1853B01J35/08B01J35/0013C07C67/303C07C69/75C07C2601/14
Inventor 张润赟张世元卢小松杨萍
Owner RUNTAI CHEM TAIXING CO LTD
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