Method for preparing acetal carbonyl compound

    公开(公告)号:US10508073B2

    公开(公告)日:2019-12-17

    申请号:US15743698

    申请日:2015-12-08

    Abstract: The present application provides a method for preparing acetal carbonyl compound used as an intermediate for producing ethylene glycol, which comprises a step in which a raw material acetal and a raw gas carbon monoxide go through a reactor loaded with a catalyst containing an acidic microporous silicoaluminophosphate molecular sieve, for carrying out a carbonylation reaction. In the method of the present invention, the conversion rate of the raw material acetal is high, and the selectivity of acetal carbonylation is high, and the catalyst life is long, and no additional solvent is needed in the reaction process, and the reaction condition is relatively mild, and the process is continuous, showing the potential for industrial application. Moreover, the product of acetal carbonyl compound can be used for producing ethylene glycol by hydrogenation followed by hydrolysis.

    Method for preparing methyl acetate
    8.
    发明授权
    Method for preparing methyl acetate 有权
    乙酸甲酯的制备方法

    公开(公告)号:US09440226B2

    公开(公告)日:2016-09-13

    申请号:US14650589

    申请日:2014-01-28

    Abstract: The present invention provides a method for preparing methyl acetate, in which a feed gas containing an organic amine, dimethyl ether, carbon monoxide and optional hydrogen gas goes through a reactor loaded with a H-type mordenite catalyst, to produce methyl acetate; wherein said H-type mordenite catalyst is a H-type mordenite catalyst with adsorption of an organic amine. The method in the present invention improves the catalyst stability and prolongs the catalyst life, by using the H-type mordenite catalyst with adsorption of an organic amine as the catalyst and adding the organic amine in the feed gas to replenish the organic amine desorbed from the catalyst during the reaction.

    Abstract translation: 本发明提供了一种制备乙酸甲酯的方法,其中含有有机胺,二甲醚,一氧化碳和任选的氢气的进料气体经过负载有H型丝光沸石催化剂的反应器,生产乙酸甲酯; 其中所述H型丝光沸石催化剂是吸附有机胺的H型丝光沸石催化剂。 本发明的方法通过使用H型丝光沸石催化剂吸附有机胺作为催化剂,并在进料气体中加入有机胺,从而提高催化剂的稳定性并延长催化剂寿命,从而补充从 催化剂。

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