申请人:Hatanaka Shigeru
公开号:US20110065951A1
公开(公告)日:2011-03-17
Provided is a method for producing n-propyl acetate capable of suppressing the deterioration of a hydrogenation catalyst to such an extent that the catalyst can be industrially used, for example, in the case where n-propyl acetate is produced by performing a hydrogenation reaction in the presence of the hydrogenation catalyst using, as a raw material liquid, a liquid containing allyl acetate or the like which has been produced from propylene, oxygen and acetic acid and obtained using a purification process such as distillation. In such a method for producing n-propyl acetate, the concentration of a formyl group-containing compound (such as acrolein, propionaldehyde or 2-methylcrotonaldehyde) and the concentration of an acryloyloxy group-containing compound (such as acrylic acid or allyl acrylate) in the raw material liquid are respectively set to 100 ppm by mass or less. As a result, the deterioration of the hydrogenation catalyst can be suppressed to such an extent that the catalyst can be industrially used.
提供了一种生产n-丙酸丙酯的方法,能够抑制氢化催化剂的恶化,以使催化剂可以在工业上使用。例如,在存在氢化催化剂的情况下,通过使用含有丙烯酸烯丙酯或类似物的液体作为原料液体,在丙烯,氧气和乙酸的存在下进行氢化反应来生产n-丙酸丙酯,并通过蒸馏等纯化过程进行提取。在这种生产n-丙酸丙酯的方法中,原料液中的甲酰基化合物(如丙烯醛,丙酸醛或2-甲基巴豆醛)的浓度和丙烯酰氧基含量化合物(如丙烯酸或烯丙酸烯丙酯)的浓度分别设置为100 ppm或更少。因此,可以抑制氢化催化剂的恶化,以使催化剂可以在工业上使用。