Development of ion gel membranes with high CO2 permeability and pressure resistance by designing the structure of gel networks

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K18256
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Properties in chemical engineering process/Transfer operation/Unit operation
• Research Institution: Kobe University
• Principal Investigator: Kamio Eiji 神戸大学, 工学研究科, 助教 (30382237)
• Research Collaborator: MATSUYAMA Hideto ; MOGHADAM Farhad ; MATSUKI Tatsuya
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 膜分離 / イオン液体 / ゲル / ガス分離

Outline of Final Research Achievements

Highly robust ion gel membranes composed of a specific double-network structure and a large amount of a CO2 reactive ionic liquid were fabricated. The ion gel membrane with suitable network composition and cross-linking degree showed high mechanical strength of more than 25 MPa of compressive fracture stress and 1 MPa of tensile fracture stress. The developed ion gel membrane maintained its high CO2 separation performance under 500 kPa of trans-membrane pressure condition.
Toughening of the ion gel membrane allowed to decrease of the membrane thickness up to 58 micron and to increase of the ionic liquid content. The ion gel membrane containing 80 wt% of ionic liquid had high solute diffusivity in the gel membrane and demonstrated more than 10000 barrer of CO2 permeability and 150 of CO2/N2 selectivity at 373 K for the CO2/N2 mixture with 10 kPa of CO2 partial pressure.

Free Research Field

工学