文献类型：会议论文

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]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

会议论文集：24th International Symposium on Chemical Reaction Engineering (ISCRE)

会议日期：JUN 12-15, 2016

会议地点：Minneapolis, MN

语种：英文

外文关键词：three-phase reaction; methanol synthesis; wet-proofed surface; liquid-solid contacting; wettability

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 degrees, 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. (c) 2016 American Institute of Chemical Engineers AIChE J, 63: 226-237, 2017