以分子筛类催化剂对低浓度乙醇脱水制生物乙烯进行了研究。
The processing conditions of preparing bio-ethylene with molecular sieve catalyst from ethanol as material were studied.
针对乙醇脱水制乙烯催化剂存在的问题，提出当前催化剂的发展趋势。
The trend of catalyst development is set forth according to the problems existing in the ethanol dehydration.
实验结果表明，该复合膜对乙醇-水溶液具有很高的渗透汽化脱水的选择分离性能和渗透通量。
The results show that the PIC membranes possess highly selective properties and flux of the dehydration for aqueous ethanol solution mixture under pervaporation conditions.
性状：玫瑰红色结晶。脱水后曾红色粉末，溶于水和甲醇，微溶于乙醇。
Appearance: rose crystal. it becomes red powder after losing crystal water, soluble in water and carbinol, slightly soluble in alcohol.
使用恒温固定吸附床对乙醇蒸汽脱水的木薯粉吸附剂的气相选择吸附性能进行研究。
The adsorption capability of cassava meal for gaseous phase selective adsorption for ethanol dehydration was investigated via a bench-test fixed-bed adsorber at constant temperature.
性状：红色结晶；在湿空气中易潮湿，易溶于水，也溶于乙醇、醚和丙酮；脱水后呈浅兰色粉末。
Appearance: Red crystal. Easily deliquescent in wet air, soluble in water, alcohol and acetone, it becomes light-blue powder after losing the crystal water.
环合废液脱水后，分离塔回流比为15，理论板为40时，回收乙醇中甲醇的质量分数小于10%。
The recovered ethanol with less than 10% methanol can be purified in a dehydration tower and a separation tower with 40 theoretical plates and a reflux ratio of 15.
脱水后曾红色粉末，溶于水和甲醇，微溶于乙醇。
It becomes red powder after losing crystal water, soluble in water and carbinol, slightly soluble in alcohol.
以脱水剂促进香茅醛与二乙醇胺缩合，生成稳定缩合物，产率达97.9％；
The condensation of citronellal with diethanolamine was promoted in the existence of dehydrating agent, producing a stable condensate, the yield was 97. 9%;
以脱水剂促进香茅醛与二乙醇胺缩合，生成稳定缩合物，产率达97.9％；
The condensation of citronellal with diethanolamine was promoted in the existence of dehydrating agent, producing a stable condensate, the yield was 97. 9%;
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