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Hydrogenation method for increasing yield of cyclohexane-1,4-dicarboxylic acid diisooctyl ester
Hydrogenation method for increasing yield of cyclohexane-1,4-dicarboxylic acid diisooctyl ester
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机译:氢化方法以提高环己烷-1,4-二羧酸二异辛酯的收率
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摘要
A hydrogenation method for increasing the yield of cyclohexane-1,4-dicarboxylic acid diisooctyl ester is provided. The hydrogenation method uses a hydrogenating reaction tank, which is equipped with a hollow-shaft gas-introducing mixer having air-extracting, air-exhausting and mixing functions, to allow hydrogen gas to be uniformly dispersed in a reaction solution. A ruthenium-on-alumina (Ru/Al2O3) hydrogenation catalyst can be used for carrying out a hydrogenation reaction under gentle conditions. Therefore, the hydrogenation catalyst can be used in a reduced amount, the risk of side reaction(s) can be reduced, and the yield of cyclohexane-1,4-dicarboxylic acid diisooctyl ester can reach at least 99% with a cis isomer proportion of at least 85.0%. The hydrogenation method shows extremely high economic benefit.
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机译:提供了一种用于增加环己烷-1,4-二羧酸二异辛酯的产率的氢化方法。氢化方法使用氢化反应槽,其配备有具有抽气,抽气和混合功能的空心轴气体引入混合器,以使氢气均匀地分散在反应溶液中。可以使用氧化铝上钌(Ru / Al 2 Sub> O 3 Sub>)加氢催化剂在温和条件下进行加氢反应。因此,可以减少使用氢化催化剂的量,可以降低副反应的风险,并且具有顺式异构体比例的环己烷-1,4-二羧酸二异辛酯的产率可以达到至少99%。至少为85.0%。氢化方法显示出极高的经济效益。
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