Building CO2 Transport Channels in Mixed Matrix Membranes Using SiO2 Nanosheets
Source abstract
Abstract
With the use of the polyether–polyamide block copolymer (Pebax) as a polymer membrane matrix, two-dimensional silicon dioxide (SiO 2 ) nanosheets were obtained through the acid treatment of vermiculite and applied as fillers to prepare mixed matrix membranes (MMMs) with different filler amounts. Building transport channels for CO 2 transfer in the membranes and enhancing the separation performance of CO 2 /CH 4 are feasible owing to the structure of the SiO 2 nanosheets and their propensity for horizontal alignment in the MMMs. The investigation of the characteristics and gas separation capabilities of Pebax–SiO 2 MMMs revealed that the combination of SiO 2 nanosheets considerably improved the separation effect of the MMM S in the CO 2 /CH 4 system. The Pebax–SiO 2 MMMs demonstrated an excellent CO 2 separation efficiency with a CO 2 permeation coefficient of 313.24 barrer and a CO 2 /CH 4 selectivity of 31.26 at the filling quantity of 1.0 wt %.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Membrane Separation and Gas Transport · Muon and positron interactions and applications · Covalent Organic Framework Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemistry and Chemical Engineering, Tarim University, Alar, Xinjiang 843300, China
State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
Xinjiang University of Science and Technology, Korla, Xinjiang 84100, China
Funding
National Natural Science Foundation of China · Tarim University · State Key Laboratory of Organic Inorganic Composites, Beijing University of Chemical Technology · First Division Alar Science and Technology Plan Project in Xinjiang Corps
References (34)
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