A kind of modification-catalyzed method for improving the ratio of ketone to alcohol in hydrogenation reaction of antioxidant 4020

A technology of anti-aging agent and modifier, which is applied in the field of modified catalysis to increase the ketone-alcohol ratio after the hydrogenation reaction of anti-aging agent 4020, which can solve the problems of increasing production cost, reducing and increasing the consumption of raw material MIBK, etc., to reduce consumption and reduce side effects Response, the effect of reducing energy consumption

Active Publication Date: 2016-04-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only increases the consumption of raw material MIBK, but also reduces its concentration which affects the speed of the main reaction
MIBK is converted into MIBC after hydrogenation, and the recovered MIBC needs to be re-catalyzed by high-temperature dehydrogenation to produce MIBK, which greatly increases the production cost

Method used

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  • A kind of modification-catalyzed method for improving the ratio of ketone to alcohol in hydrogenation reaction of antioxidant 4020
  • A kind of modification-catalyzed method for improving the ratio of ketone to alcohol in hydrogenation reaction of antioxidant 4020

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add RT Bass, MIBK and [Bmim]BF to the ingredients tank 4 , stirred evenly to form a raw material solution, wherein the molar ratio of RT base to MIBK is 1:5.5, MIBK and [Bmim]BF 4 The volume ratio is 1000:2.5.

[0027] Install the granular C?207 copper-based catalyst in the fixed bed, pass in hydrogen, and adjust the pressure in the fixed bed to 4MPa, and then input MIBK solvent at a speed of 50ml / hour. After the solvent is mixed with hydrogen, after pre- The heater then enters the fixed bed reactor. Slowly increase the temperature of the preheater and the fixed bed, and when the temperature reaches 180°C, keep it for several hours until the solvent fills the fixed bed reactor. At this temperature, the system pressure was adjusted to 2.0MPa, the material was replaced with raw material solution, the feed rate was adjusted to 20ml / hour, and the reducing solution after the catalytic hydrogenation reaction overflowed from the top of the fixed-bed reactor. Move the reduci...

Embodiment 2

[0032] The specific operating conditions are the same as in Example 1, except that the copper-based catalyst is changed from C?207 to F04. The test results are shown in the comparison table 2.

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Abstract

The invention belongs to the technical field of organic synthesis, and specifically relates to a modification-catalysis method for increasing the ketone-alcohol ratio in the hydrogenation reaction of antioxidant 4020, which is characterized in that the raw materials 4-aminodiphenylamine, methyl isobutyl ketone (MIBK) and ion The liquid is made into a raw material solution, and a copper-based catalyst is loaded in a fixed-bed reactor. The raw material solution is input into the fixed-bed reactor through continuous feeding and discharging to prepare anti-aging agent 4020. After the hydrogenation reaction, the ketone-alcohol ratio is significantly improved. improved. The method of the invention is simple, easy to operate, high in yield and good in selectivity, and the side reaction of MIBK hydrogenation into methyl isobutyl carbinol (MIBC) is obviously suppressed, which is beneficial to increase the ketone-alcohol ratio after catalytic hydrogenation in industrial production, Reduce MIBK consumption and greatly reduce production costs.

Description

Technical field [0001] The invention is an organic synthetic technology field, which specifically involves a method of modified catalytic and increasing aging agent 4020 after hydrogenation reaction. Background technique [0002] Rubber -defense agent 4020 is an efficient, multifunctional, low -toxic, and durable agent product. It is currently the most important and most dosage variety among rubber anti -agent.Anti -agent 4020 has the advantages of heat, oxygen and harmful metals (such as copper and manganese), which are not easy to spray frost, have high anti -ozone and flexion resistance.performance.The toxicity, volatility, the loss of water washing, and the irritation of the skin are much smaller than that of the skin, and the solvent is resistant to solvent.Anti -agent 4020 is widely used in the production of tire tires, tire sides and inner tires of aircraft, cars and bicycles. It is also the best choice in rubber anti -aging systems such as conveyor belts, rubber pipes, ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C211/55C07C209/52B01J31/02
CPCY02P20/54
Inventor 杨怀青黄伟管庆宝张帆邹宁芬吴结华
Owner CHINA PETROLEUM & CHEM CORP
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