文献类型：期刊文献

英文题名：Methanol synthesis in a three-phase catalytic bed under nonwetted condition

作者：Ling, Dan[1]; Liu, Peng[1]; Cheng, Zhen-Min[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2017

卷号：63

期号：1

起止页码：226

外文期刊名：AIChE Journal

收录：EI(收录号：20165003125183)

语种：英文

外文关键词：Mass transfer - Methanol - Reaction rates - Synthesis gas manufacture - Gases - Surface reactions - Ionic liquids - Phase interfaces - Wetting - Chemical reactors

摘要：To overcome the heat removal problem encountered in methanol synthesis at high syngas concentrations in the gas phase, a three-phase nonwetted catalytic system was established by introducing an inert liquid medium into a fixed-bed reactor. To form a repellent interface between the liquid and the catalyst, the catalyst was modified into hydrophobic, while the liquid medium was chosen as a room temperature ionic liquid with hydroxyl groups. The liquid-solid contact angle was measured to be 115°, and only 20% of the catalyst external surface was wetted by the liquid. Under three-phase condition, the reaction rate was measured to be 60%–70% of gas-phase reaction, while it was merely 10%–20% for the fully wetted catalyst. From the resistance analysis on the mass transfer and reaction steps, the overall reaction rate is expected to increase further if the surface could be more wet proofed. ? 2016 American Institute of Chemical Engineers AIChE J, 63: 226–237, 2017. ? 2016 American Institute of Chemical Engineers