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Thermodynamics-consistent graph neural networks

delete2024-01-01
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J
Jan G. Rittig
A
Alexander Mitsos *
DOI:10.1039/d4sc04554hdelete
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摘要

摘要

En 中文
We propose excess Gibbs free energy graph neural networks (GE-GNNs) for predicting composition-dependent activity coefficients of binary mixtures. The GE-GNN architecture ensures thermodynamic consistency by predicting the molar excess Gibbs free energy and using thermodynamic relations to obtain activity coefficients. As these are differential, automatic differentiation is applied to learn the activity coefficients in an end-to-end manner. Since the architecture is based on fundamental thermodynamics, we do not require additional loss terms to learn thermodynamic consistency. As the output is a fundamental property, we neither impose thermodynamic modeling limitations and assumptions. We demonstrate high accuracy and thermodynamic consistency of the activity coefficient predictions. We propose excess Gibbs free energy graph neural networks (GE-GNNs) for predicting composition-dependent activity coefficients of binary mixtures.
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期刊

Chemical Science 封面图
Chemical Science
IF:
7.4
论文数:
1.7W
被引数:
9.3W

机构

R
RWTH Aachen University
学者数:
3.5W
论文数: 2.6W
被引数: 3.6W
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引用论文

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