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    • 10. 发明申请
    • METHOD FOR PREPARING DIALKYL CARBONATE
    • 制备碳酸二乙酯的方法
    • WO2011013880A2
    • 2011-02-03
    • PCT/KR2009/006726
    • 2009-11-27
    • KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYKOH, Jae CheonKIM, Chul UngKIM, Yun Min
    • KOH, Jae CheonKIM, Chul UngKIM, Yun Min
    • C07C68/00
    • C07C68/00C07C69/96
    • The present invention provides a method for preparing dialkyl carbonate from urea or alkyl carbamate and alkyl alcohol using an ionic liquid comprising a cation, which produces a hydrogen ion, and a hydrophobic anion containing fluorine with high temperature stability in the presence of catalyst containing a metal oxide or hydrotalcite. Since the present invention can prepare dialkyl carbonate at a pressure lower than those of existing methods, it does not require an expensive pressure control device and peripheral devices for maintaining high pressure including the installation cost. It is also the method for preparing a dialkyl carbonate with high yield, thus improving economical efficiency. Moreover, the method of the present invention hardly produces any waste during the process and is thus an eco-friendly method.
    • 本发明提供一种在含有金属的催化剂存在下,使用含有产生氢离子的阳离子的离子液体和含有氟的疏水性阴离子从尿素或烷基氨基甲酸酯和烷基醇制备碳酸二烷基酯的方法, 氧化物或水滑石。 由于本发明可以以比现有方法低的压力制备碳酸二烷基酯,所以不需要昂贵的压力控制装置和用于保持高压的外围装置,包括安装成本。 也是以高产率制备碳酸二烷基酯的方法,从而提高了经济性。 此外,本发明的方法在该方法中几乎不产生浪费,因此是一种环保方法。