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This study describes the production of a membrane by blending polyvinyl alcohol (PVA) and water‐absorbing agents for the selective permeation of CO2 by optimizing the type of water‐absorbing agent and its ratio to PVA. A CO2‐facilitated transport membrane is prepared by adding an aqueous cesium carbonate solution to a coated polymer blend matrix. When sodium polyacrylate (PAANa) is blended with PVA as a water‐absorbing agent, the resulting membrane shows promising heat and pressure resistances and a relatively high CO2/He separation performance. Particularly, the CO2/He selectivity of the membrane composed of PVA, PAANa, and another water‐absorbing agent exceeds 400 under a total pressure of 0.1 MPa and a CO2 partial pressure of 0.08 MPa at 85°C. Moreover, the CO2/He selectivity is approximately 100 even under a total pressure of 0.7 MPa and a CO2 partial pressure of 0.56 MPa. Thus, a high‐performance CO2 separation membrane at 85°C is produced.

Va riousa renesh ave been hydrogenated using platinum on carbon in a2 -propanol-aqueous mixed solvent at 100 8 8Cw ithout the addition of flammable hydrogen gas to givet he corresponding cyclohexane derivatives.2 -Propanol plays ar ole as an efficient hydrogen source based on the platinum on carbon-catalyzed dehydrogenation.

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Catalytic arene reduction was effectively realized by heating in 2-propanol/water in the presence of Pt on carbon (Pt/C) and metallic Fe. 2-Propanol acted as a hydrogen source, obviating the need for flammable (and hence, dangerous and hard-to-handle) hydrogen gas, while metallic Fe acted as an essential co-catalyst to promote reduction. The chemical states of Pt and Fe in the reaction mixture were determined by X-ray absorption near-edge structure analysis, and the obtained results were used to suggest a plausible reaction mechanism, implying that catalytic reduction involved Pt- and Fe-mediated single-electron transfer and the dehydrogenation of 2-propanol.