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Superior polymeric gas separation membrane designed by explainable graph machine learning
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DOI：10.1016/j.xcrp.2024.102067.png)
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Gas separation using polymer membranes promises to dramatically drive down the energy, carbon, and water intensity of traditional thermally driven separation, but developing the membrane materials is challenging. Here, we demonstrate a graph machine learning (ML) strategy to guide the experimental discovery of synthesizable polymer membranes with performances simultaneously exceeding the empirical upper bounds in multiple industrially important gas-separation tasks. Two predicted candidates are synthesized and experimentally validated to perform beyond the upper bounds for multiple gas pairs (O2/N2, 2 /N 2 , H2/CH4, 2 /CH 4 , and H2/N2). 2 /N 2 ). Notably, the O2/N2 2 /N 2 separation selectivity is 1.6-6.7 times higher than that of existing polymer membranes. The molecular origin of the high performance is revealed by combining the inherent interpretability of our ML model, experimental characterization, and molecule-level simulation. Our study presents a unique explainable ML-experiment combination to tackle challenging energy material design problems in general, and the discovered polymers are beneficial for industrial gas separation.
Keyword:
PERMEABILITY
PREDICTION
PERMSELECTIVITY
POLYACETYLENES
期刊
IF:
7.3
论文数:
2.8K
被引数:
1.2W
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