甲醇－乙醇脱氢法合成乙酸甲酯

Direct synthesis of methyl acetate from methanol and ethanol

在Ｃｕ／Ｚｎ／Ａｌ／Ｚｒ催化剂上由甲醇、乙醇脱氢一步合成乙酸甲酯。考察了温度、压力、进料空速对反应的影响。催化剂在２４０～３００℃，液空速１．５～１０ｈ－１、压力０．１～１．８ＭＰａ均有很好的活性，其中在进料液空速２．５ｈ－１、２７０℃、０．１ＭＰａ压力下醇转化率为４７．５％，酯选择性为８７．４％，乙酸甲酯在液相产物中占３２．６％（ｍａｓｓ），乙酸乙酯占１１．６％（ｍａｓｓ）。

ethyl acetate was synthesized in one step by dehydrogenation of methanol and ethanol over Cu/Zn/Al/Zr catalyst. The influence of reaction temperature, pressure, and flowrate on the reaction was investigated. The catalyst exhibited high activity at 240￣300℃, LHSV=1.5￣ 10.0h -1 and 0.1￣1.8MPa. The conversion and ester selectivity were 47.5% and 87.4%, respectively, at 270℃, LHSV=2.5h -1 and 0.1MPa. The percents of methyl acetate and ethyl acetate in the liquid product were 32.6%(mass) and 11.6%(mass), respectively.