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Method for increasing ketone-alcohol ratio in hydrogenation reaction of anti-aging agent 4020 by modification-catalysis

The technology of an antioxidant and modifier is applied in the field of modification and catalysis to improve the ratio of ketone to alcohol after the hydrogenation reaction of antioxidant 4020, which can solve the problems of reducing and increasing the production cost and increasing the consumption of raw material MIBK, so as to reduce side reactions, The effect of reducing consumption and reducing energy consumption

Active Publication Date: 2015-01-14
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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  • Method for increasing ketone-alcohol ratio in hydrogenation reaction of anti-aging agent 4020 by modification-catalysis
  • Method for increasing ketone-alcohol ratio in hydrogenation reaction of anti-aging agent 4020 by modification-catalysis
  • Method for increasing ketone-alcohol ratio in hydrogenation reaction of anti-aging agent 4020 by modification-catalysis

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

[0033] 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 method for increasing the ketone-alcohol ratio in hydrogenation reaction of an anti-aging agent 4020 by modification-catalysis. The method is characterized by preparing raw materials, namely 4-aminodiphenylamine, methyl isobutyl ketone (MIBK) and an ionic liquid into a raw material solution, loading a copper-based catalyst into a fixed bed reactor, and putting the raw material solution into the fixed bed reactor in a continuous feeding and discharging way for preparing the anti-aging agent 4020 by catalytic hydrogenation, wherein the ketone-alcohol ratio after the hydrogenation reaction is significantly increased. The method provided by the invention is simple, convenient to operate, high in yield and good in selectivity, the MIBK becomes methyl isobutyl carbinol (MIBC) by hydrogenation, and side effects are obviously inhibited, so that the method is conductive to increasing the ketone-alcohol ratio after catalytic hydrogenation in industrial production, reducing the consumption of the MIBK and greatly reducing the production cost.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and specifically relates to a method for modifying and catalyzing the improvement of the ketone-alcohol ratio after the hydrogenation reaction of antioxidant 4020. Background technique [0002] Rubber Antiaging Agent 4020 is an efficient, multi-functional, low-toxicity and long-lasting antiaging agent product. It is the most important and most used type of rubber antiaging agent at present. Antiaging agent 4020 has the advantages of not easy to bloom, high ozone resistance and flex resistance, and has the advantages of inhibiting heat, oxygen and harmful metals (such as copper and manganese, etc.), so that the rubber has good resistance to catalytic degradation of copper and other heavy metals performance. The toxicity, volatility, washing loss rate and skin irritation of Antiaging Agent 4020 are much smaller than Antiaging Agent 4010NA, and it is resistant to solvent extraction. Anti...

Claims

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Application Information

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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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