乙酸乙酯的合成这个产率算对了吗,错了的话正确的应该是多少啊 你的实际产量是:5.5*0.9=4.95g理论产量:由于乙醇的物质的量是28*0.95*0.79/46.07=0.4561摩尔醋酸的物质的量是30*1.05/60.05=0.5246摩尔理论产量用乙醇的量就是0.4561摩尔就是0.4561*88.11=40.19g产率:4.95/40.19=12.32%扩展资料:一、工业合成制取乙酸乙酯方法:1、乙醛缩合法在乙醇铝催化剂作用下,在0-20℃时乙醛自动氧化缩合成乙酸乙酯。2、乙醇氧化法从原料的来源和成本分析,以乙醇为原料的合成路线较合理、廉价。乙醇氧化法按其反应机理可分为两种双功能催化剂体系。3、乙烯加成法采用负载在二氧化硅等载体上的杂多酸金属盐或杂多酸为催化剂,乙酸和乙烯在反应温度为150℃、压力为1.0MPa 条件下反应生成乙酸乙酯。二、乙酸乙酯合成注意事项1、酯化反应是一个可逆反应。为了提高酯的产量,必须尽量使反应向有利于生成酯的方向进行。一般是使反应物酸和醇中的一种过量。在工业生产中,究竟使哪种过量为好,一般视原料是否易得、价格是否便宜以及是否容易回收等具体情况而定。在实验室里一般采用乙醇过量的办法。乙醇的质量分数要高,如能用无水乙醇代替质量分数为95%的乙醇效果会更好。催化作用使用的浓硫酸量很少,一般只要使硫酸的质量达到。
蟾酥在乙醇中是否全部溶解? 蟾酥在乙醇中全部溶解 甙类 甙类:(Glycosides)甙,又称配糖体或苷,是由糖或糖的衍生物(如糖醛酸)的半缩醛羟基与另一非糖物质中的羟基以缩醛键(甙键)脱水缩合而成的环状。
大家帮忙翻译一下!急用!!谢谢!! Synthetic compounds have trimethoprim category to improve processes,solid sulphur thiourea,urea,hydrochloric acid guanidine into ethanol sodium solution,heated to make it dissolved,and then Dijia clean Yisuanyizhi by Central compounds containing trimethoprim.Savings of raw materials,increased production rates;Traube condensation reaction was further through a series of Piaoling compounds,some of which have anti-virus,anti-tumor effect.After numerous experiments found room temperature 2,4,5-three amino-6-hydroxy trimethoprim with Shuiyang aldehyde,formaldehyde neighbors chlorobenzene,Chenopodium album Lo aldehyde reaction,2-hydrosulfuryl base-6-hydroxy-4,5-two amino trimethoprim with Shuiyang aldehyde reaction synthetic four seats husband alkali,according to responses from the end of the structure,nature and conditions of reaction testing infrared spectral results projections generated compounds may structure.