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1磁性ZSM-5分子筛的合成及吸附性能研究显示文摘采用水热晶化法,加入不同质量的磁粉Fe3O4,按照12 Na2O:100 SiO2:2 Al2O3:2500 H2O的摩尔配比,180℃24 h合成不同的磁性ZSM-5分子筛样品,并采用XRD,SEM等手段技术对磁性分子筛进行表征。考察了投加量,pH,以及温度对吸附效果的影响,结果表明,当温度为25℃,投加量为0.4 g/L,pH为4时用含Fe3O4 2.65%的ZSM-5分子筛对20 mg/L的对硝基苯酚进行吸附试验,其吸附效率为69.23%,并采用简单的磁力方法进行了回收。彭巧玲 成岳 胡星 2014中国陶瓷2014,50,11:3
2浸没式陶瓷膜反应器中超细TS-1催化苯羟基化一步连续合成苯酚(英文)显示文摘A new route towards phenol production by one-step selective hydroxylation of benzene with hydrogen peroxide over ultrafine titanium silicalites-1(TS-1) in a submerged ceramic membrane reactor was developed, which can maintain the in situ removal of ultrafine catalyst particles from the reaction slurry and keep the process continuous.The effects of key operating parameters on the benzene conversion and phenol selectivity, as well as the membrane filtration resistance were examined by single factor experiments. A continuous reaction process was carried out under the obtained optimum operation conditions. Results showed that the system can be continuously and stably operated over 20 h, and the benzene conversion and phenol selectivity kept at about 4% and 91%, respectively. The ceramic membrane exhibits excellent thermal and chemical stability in the continuous reaction process.姜红 佘飞 杜艳 陈日志 邢卫红 2014Chinese Journal of Chemical Engineering2014,22,Z1:2
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