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A kind of platinum/alumina catalyst and its preparation method and application

A kind of alumina and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. The times are prone to fluctuations and other problems, achieving good application prospects, reducing the risk of high pressure and high temperature, and the effect of continuous production of products

Active Publication Date: 2020-02-21
SHANGHAI XUNKAI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Precious metal catalyst adopts batch reaction, the loading capacity of precious metal on the catalyst is relatively high, most of them need sulfuration treatment, the operation of batch reaction is cumbersome, and it is easy to fluctuate between batches
There are also patents that disclose a fixed-bed reaction process using noble metal catalysts. Due to the harsh requirements for the catalyst in the synthetic reaction of anti-aging agent 4020, conventional noble metal catalysts cannot meet the requirements of high activity and high selectivity. With the development of my country's automobile industry, the market There is an urgent need for a hydrogenation catalyst for the fixed-bed synthetic anti-aging agent 4020 with lower cost and excellent performance that can meet the production requirements of the process

Method used

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  • A kind of platinum/alumina catalyst and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0059] (1) Carrier pretreatment

[0060] a, prepare 150ml of hydrochloric acid with a concentration of 0.1mol / L, weigh 3g of polyvinylpyrrolidone-K30, 150g of heptane, and 150g of butanol, and add them to a 5000ml three-necked flask, and vigorously stir and mix to form the first type of emulsion;

[0061] b. Prepare 410ml of germanium tetrachloride tetrahydrofuran solution with a concentration of 1wt%, weigh 90g of heptane, add it to a 2000ml three-necked flask, and stir to form the second type of emulsion;

[0062] c. Add the second type of emulsion into the first type of emulsion under stirring conditions, and after ultrasonic treatment, continue to stir for 10 minutes to obtain a mixed solution;

[0063] d. Add an accurately weighed specific surface area of ​​20m to the mixed solution 2 / g, 200g spherical alumina carrier with an average pore diameter of 55nm and a diameter of 1.5-2.5mm, stirred slowly at a temperature of 50°C, kept for 6 hours, washed with deionized water ...

Embodiment 2

[0072] (1) Carrier pretreatment

[0073] a, prepare 150ml of hydrochloric acid with a concentration of 0.1mol / L, weigh 3g of polyvinylpyrrolidone-K30, 150g of heptane, and 150g of butanol, and add them to a 5000ml three-necked flask, and vigorously stir and mix to form the first type of emulsion;

[0074] b. Prepare 410ml of germanium tetrachloride tetrahydrofuran solution with a concentration of 1wt%, weigh 90g of heptane, add it to a 2000ml three-necked flask, and stir to form the second type of emulsion;

[0075] c. Add the second type of emulsion into the first type of emulsion under stirring conditions, and after ultrasonic treatment, continue to stir for 10 minutes to obtain a mixed solution;

[0076] d. Add an accurately weighed specific surface area of ​​20m to the mixed solution 2 / g, 200g spherical alumina carrier with an average pore diameter of 55nm and a diameter of 1.5-2.5mm, stirred slowly at a temperature of 50°C, kept for 6 hours, washed with deionized water ...

Embodiment 3

[0085] (1) Carrier pretreatment

[0086] a, preparing 200ml of hydrochloric acid with a concentration of 0.1mol / L, weighing 5g of polyvinylpyrrolidone-K30, 200g of heptane, and 200g of butanol, adding them to a 5000ml three-necked flask, and vigorously stirring and mixing to form the first type of emulsion;

[0087] b. Prepare 1025ml of germanium tetrachloride tetrahydrofuran solution with a concentration of 2wt%, weigh 125g of heptane, add it to a 2000ml three-necked flask, and stir to form the second type of emulsion;

[0088] c. Add the second type of emulsion into the first type of emulsion under stirring conditions, and after ultrasonic treatment, continue to stir for 10 minutes to obtain a mixed solution;

[0089] d. Add an accurately weighed specific surface area of ​​15m to the mixed solution 2 / g, with an average pore diameter of 65nm and a diameter of 1.5-3.0mm spherical alumina carrier 200g, at a temperature of 60°C, stir slowly, keep for 6 hours, wash with deionize...

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Abstract

The invention discloses a platinum / alumina catalyst. The platinum / alumina catalyst is prepared from components in percentage by mass as follows: 0.05%-1.0% of platinum, 0.1%-2.0% of iron, 0.5%-5.0% ofgermanium dioxide and 92.0%-99.35% of alumina. The invention also discloses a preparation method of the platinum / alumina catalyst and an application of the platinum / alumina catalyst in synthesis of an anti-aging agent 4020 from the platinum / alumina catalyst, N-phenyl p-phenylenediamine and methyl isobutyl ketone in a fixed bed reactor. Compared with the prior art, the platinum / alumina catalyst has mild application conditions, high activity, high selectivity, long service life and relatively low price, is simple to produce and easy to industrialize and has bright application prospects and enormous economic benefits.

Description

technical field [0001] The invention relates to the field of industrial catalysis, in particular to a platinum / alumina catalyst, a preparation method thereof, and an application in the fixed-bed synthetic antioxidant 4020 reaction. [0002] technical background [0003] Anti-aging agent is an important part of rubber additives, which plays an irreplaceable role in the anti-ozone, anti-oxidation, heat resistance and anti-bending of rubber. Among the many products in the p-phenylenediamine series, antiaging agent 4010NA and antiaging agent 4020 are widely used all over the world. Anti-aging agent 4020, also known as anti-aging agent DMBPPD or 6PPD, scientific name N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, belongs to p-phenylenediamine anti-aging agent, comprehensive protection effect, Especially good durability, it is the leading product of anti-aging agent at present, it is widely used in aircraft, automobile and bicycle tires, tape industry, cable industry, waterpr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J37/02B01J37/03B01J37/18B01J35/02C07C209/26C07C211/54
Inventor 国海光孙海霞孙兵
Owner SHANGHAI XUNKAI NEW MATERIAL TECH
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