摘要
在Ｎｉ－Ｚｎ／Ｃ催化剂上对乙醇气相常压羰基化的反应温度、乙醇空速、ＣＯ／Ｃ２Ｈ５ＯＨ摩尔比进行了研究。丙酸被认为是由丙酸乙酯不断水解得到，要获得丙酸为目的产物的最佳条件为：反应温度２６０℃，乙醇空速０．８３ｍＬ／（ｇ·ｈ），ＣＯ／Ｃ２Ｈ５ＯＨ摩尔比为４，此时丙酸摩尔收率为６５％，丙酸占丙酸乙酯总收率为９９％以上。
The effects of reaction temperature, space velocity of ethanol and CO/C 2H 5OH molar ratio on the vapor phase carbonylation of ethanol were investigated under atmospheric pressure on Ni Zn/C catalyst. Reaction temperature of 250￣260℃ is favorable for carbonylation reaction. Propionic acid is supposed to be formed successively from ethyl propionate by hydrolysis. The yield of propionic acid obtained is higher than 65% at 260℃ with space velocity of 0.83ml C 2H 5OH/g cat·h and CO/C 2H 5OH molar ratio of 4, the yield, or the molar ratio of propionic acid to propionic acid and ethyl propionate exceeds 99%. The catalyst processes good stability over at least 30h at 250℃.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
1996年第4期414-418,共5页
Chemical Reaction Engineering and Technology
基金
广东省自然科学基金
关键词
乙醇
气相羰基化
丙酸
工艺
催化剂
Ethanol, Vapor phase carbonylation, Propionic acid, Reaction techniques
