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- W2024055190 abstract "Poly(amidoamine) (PAMAM) dendrimers were incorporated into a cross-linked poly(vinyl alcohol) (PVA) matrix to improve CO 2 separation performance at elevated pressures. An organic metal compound was selected as a cross-linker of PVA. The resulting self-standing PAMAM/ cross-linked PVA membrane containing 41.6 wt% of PAMAM dendrimer had both good pressure tolerance and CO 2 permeance. The CO 2 /H 2 selectivity was almost constant when the CO 2 partial pressure in feed gas was from 80 to 560 kPa at 40 °C. CO 2 /H 2 selectivity and CO 2 permeance of the membrane were 32 and 1.6×10 −12 m 3 (STP)/(m 2 s Pa), respectively, at 560 kPa CO 2 partial pressure in the feed gas. Both CO 2 permeance and CO 2 /H 2 selectivity increased as the operation temperature of the membrane was increased from 25 to 60 °C. A membrane containing 63.3 wt% of the dendrimer showed CO 2 /H 2 selectivity and CO 2 permeance of 42 and 1.2×10 −11 m 3 (STP)/(m 2 s Pa), respectively, at 560 kPa of CO 2 partial pressure and 60 °C. The PAMAM/ cross-linked PVA hybrid membranes are durable under high pressure operation and thus show promise for applications requiring the separation of CO 2 from H 2 under pressurized conditions, such as in the integrated coal gasification combined cycle (IGCC) processes. ► The hybrid membrane of poly(amidoamine) (PAMAM) dendrimer and a cross-linked poly(vinyl alcohol) (PVA) matrix. ► An excellent CO 2 selectivity over H 2 at an elevated pressure and 40 °C." @default.
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- W2024055190 date "2012-12-01" @default.
- W2024055190 modified "2023-09-27" @default.
- W2024055190 title "Poly(amidoamine) dendrimer/poly(vinyl alcohol) hybrid membranes for CO2 capture" @default.
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- W2024055190 doi "https://doi.org/10.1016/j.memsci.2012.07.037" @default.
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