详细信息
文献类型:期刊文献
中文题名:NaA分子筛膜反应器内乙基叔丁基醚的合成
英文题名:Synthesis of ethyl tert-butyl ether in a NaA membrane reactor
作者:曹悦[1,2];李宇璇[1];马晓华[1];许振良[1]
机构:[1]化学工程联合国家重点实验室,华东理工大学化学工程研究所膜科学与工程研发中心,上海200237;[2]西北大学食品科学与工程学院,陕西西安710069
年份:2021
卷号:35
期号:4
起止页码:649
中文期刊名:高校化学工程学报
外文期刊名:Journal of Chemical Engineering of Chinese Universities
收录:CSTPCD;;EI(收录号:20213510846178);Scopus;北大核心:【北大核心2020】;CSCD:【CSCD2021_2022】;
基金:国家自然科学基金(21176067);陕西省自然科学基金重点研发计划(2020NY-123)。
语种:中文
中文关键词:NaA分子筛膜;渗透汽化;膜反应器;乙基叔丁基醚;醚化反应
外文关键词:NaA zeolite membrane;pervaporation;membrane reactor;ethyl tert-butyl ether;etherification
摘要:针对乙醇和叔丁醇反应制备乙基叔丁基醚(ETBE)时产物水的阻碍效应所造成的ETBE收率不高的问题,提出以中空纤维NaA分子筛膜为核心元件,构建渗透汽化膜反应器(PVMR),使反应生成的水能够通过渗透汽化作用高效地在线脱除。通过与普通反应器的对比实验发现,料液初始醇比的升高可以抑制副反应的进行,提高ETBE的最终收率,但同时乙醇的稀释作用会导致PVMR脱水效率的下降。此外,无论是增加初始料液中乙醇的用量,还是采用具有过程强化作用的PVMR,对该醚化反应过程的促进作用均体现在主反应选择性的提高,而对叔丁醇转化率的影响则相对较小。结果表明,通过反应条件的优化,ETBE的收率由最低时的9%提高到25%。
In order to solve the problem of low ethyl tert-butyl ether(ETBE)yield caused by water produced during the reaction of ethanol and tert-butanol,a hollow fiber NaA zeolite membrane was apply as a core component for preparing a pervaporation membrane reactor(PVMR),where water could be efficiently removed by pervaporation.Comparing with none-membrane reactors,the results show that increasing of ethanol in initial feed solution could suppress side reaction and improve ETBE yield,but the dilution effect also results in a decrease of PVMR dehydration efficiency.In addition,both increasing ethanol amount and applying PVMR can strengthen the process,and the promotion was mainly reflected in the improvement of main reaction selectivity,while the change in conversion was limited.The results show that the yield of ETBE can be increased from 9%to 25%by optimizing the reaction conditions.
参考文献:
正在载入数据...
