2019 Fiscal Year Research-status Report
Design and development of organosilica/polymer interpenetrating networks derived membranes for high-efficient, robust carbon dioxide capture
| Project/Area Number |
19K23576
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| Research Institution | Hiroshima University |
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Principal Investigator |
余 亮 広島大学, 工学研究科, 助教 (80816942)
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| Project Period (FY) |
2019-08-30 – 2021-03-31
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| Keywords | sol-gel co-condensation / polymer-silica hybrids / carbon capture |
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| Outline of Annual Research Achievements |
As the first step of a new topic for polymer-silica hybrid membranes, pre-screening of a series of materials including silica source precursors and polymers has been carried out. Gas permeation and kinetic adsorption setups to evaluate the hybrid membranes/materials have been constructed. Both hydrophilic (organo)silica precursors (e.g., BTESE) and hydrophilic amine-rich (e.g., PAAm) and ether-rich (e.g., PEG) polymers have been successfully adapted to fabricate the polymer-silica interpenetrating networked membranes (IPNMs). These membranes demonstrated a homogenous matrix and impressive molecular-sieving effect for a series of gases considered (He, H2, CO2, N2, CH4, CF4, SF6 etc.).
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
Setups for kinetic adsorption of gas mixtures have been constructed and however, some modifications are required to improve the accuracy of quantitative measurement. Gas permeation equipment for the test of novel membranes has been successfully built up and available for use. Membranes fabrication via different approaches and materials is ongoing and some attractive results have been obtained. However, expected high CO2 permeance and CO2/gas selectivities have not yet observed. Therefore, further optimization of the hybrid membranes is required to improve the membrane separation performance.
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| Strategy for Future Research Activity |
The next work will focus on the structural optimization of polymer-silica membranes regarding material pairs selected and the ratio of polymer/silica to realize the target of CO2-selective separation. In addition, characterizations to proof the formation of interpenetrating networked structure, such as, TEM, XRD, will be conducted. Importantly, gas permeation/separation properties for the novel will be systematically studied including high-pressure permeation/separation for single and binary CO2/gas systems, and CO2 transport in humid conditions.
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| Causes of Carryover |
Some scheduled academic conferences were cancelled or postponed due to the COVID-19 issues. The incurring amount will be used t order some academic books regarding synthesis and characterizations of hybrid materials and some units for modifications of gas separation equipment that has been just constructed.
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