摘要
以乙醛为原料,在-5-0℃、停留时间为1h50min,在乙醇铝催化剂的存在下,两分子乙醛缩合成乙酸乙酯,经蒸发除去催化剂、再经粗产品精馏精制得到纯度大于99.9%的乙酸乙酯。乙酸乙酯选择性、乙醛的转化率均大于99%,乙醛单耗为1.057。
As the starting raw material, two molecular acetaldehyde are condensed to ethyl acetate in the presence of aluminum ethoxide at-5 -0℃ ,with one hour and fifty minutes staying time.Catalyst is removed as residue during evaporation stage. Ethyl acetate with purity more than 99.9% is obtained by distillation of the crude products. Both the selectivity to ethyl acetate and the conversion of acetaldehyde are over 99%. Single con- sumption of acetaldehyde is 1.057.
出处
《化学工程师》
CAS
2013年第7期80-82,共3页
Chemical Engineer
关键词
乙醛
缩合
乙酸乙酯
acetaldehyde
condensation
ethyl acetate
