A comprehensive transformer-based approach for high-accuracy gas adsorption predictions in metal-organic frameworks

Jingqi Wang, Jiapeng Liu, Hongshuai Wang, Musen Zhou, Guolin Ke, Linfeng Zhang, Jianzhong Wu (), Zhifeng Gao () and Diannan Lu ()
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Jingqi Wang: Tsinghua University
Jiapeng Liu: Sun Yat-Sen University
Hongshuai Wang: DP Technology
Musen Zhou: University of California
Guolin Ke: DP Technology
Linfeng Zhang: DP Technology
Jianzhong Wu: University of California
Zhifeng Gao: DP Technology
Diannan Lu: Tsinghua University

Nature Communications, 2024, vol. 15, issue 1, 1-14

Abstract: Abstract Gas separation is crucial for industrial production and environmental protection, with metal-organic frameworks (MOFs) offering a promising solution due to their tunable structural properties and chemical compositions. Traditional simulation approaches, such as molecular dynamics, are complex and computationally demanding. Although feature engineering-based machine learning methods perform better, they are susceptible to overfitting because of limited labeled data. Furthermore, these methods are typically designed for single tasks, such as predicting gas adsorption capacity under specific conditions, which restricts the utilization of comprehensive datasets including all adsorption capacities. To address these challenges, we propose Uni-MOF, an innovative framework for large-scale, three-dimensional MOF representation learning, designed for multi-purpose gas prediction. Specifically, Uni-MOF serves as a versatile gas adsorption estimator for MOF materials, employing pure three-dimensional representations learned from over 631,000 collected MOF and COF structures. Our experimental results show that Uni-MOF can automatically extract structural representations and predict adsorption capacities under various operating conditions using a single model. For simulated data, Uni-MOF exhibits remarkably high predictive accuracy across all datasets. Additionally, the values predicted by Uni-MOF correspond with the outcomes of adsorption experiments. Furthermore, Uni-MOF demonstrates considerable potential for broad applicability in predicting a wide array of other properties.

Date: 2024
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DOI: 10.1038/s41467-024-46276-x

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