Effect of Metal-Organic Framework (MOF) Database Selection on the Assessment of Gas Storage and Separation Potentials of MOFs.

Effect of Metal-Organic Framework (MOF) Database Selection on the Assessment of Gas Storage and Separation Potentials of MOFs.
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DOI:
10.1002/anie.202015250
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发表时间:
2021-03-29
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
通讯作者:
Keskin S
Keskin S
中科院分区:
其他
文献类型:
--
作者:
Daglar H;Gulbalkan HC;Avci G;Aksu GO;Altundal OF;Altintas C;Erucar I;Keskin S

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可计算的金属有机框架数据库(MOF DB)的开发加速了材料的高通量计算筛选(HTCS),以确定气体储存和分离的最佳候选者。这些DB是使用结构固化来构建的,以使MOF直接用于分子模拟,这导致相同的MOF在不同的DB中被报告具有不同的结构特征。我们研究了两种最近更新的,非常广泛使用的MOF DBs的数千种常见材料,以揭示结构差异如何影响模拟的CH4,H2,CO2吸收和MOFs的CH4/H2分离性能。结果表明,DB的选择对计算的低压下的气体吸收率和材料的理想选择性有显著影响。提供了对策展结构的详细分析,以分离确定气体吸收的MOF的关键元素。用于气体分离的最佳性能材料的识别被证明在很大程度上取决于模拟中使用的DB。我们研究了两个广泛使用的计算就绪金属有机框架数据库(MOF DB)中的数千种常见材料,以揭示结构差异如何影响模拟的CH4,H2,CO2吸收和MOFs的CH4/H2分离性能。用于气体分离的最佳性能材料的识别被证明在很大程度上取决于模拟中使用的DB。
Development of computation‐ready metal–organic framework databases (MOF DBs) has accelerated high‐throughput computational screening (HTCS) of materials to identify the best candidates for gas storage and separation. These DBs were constructed using structural curations to make MOFs directly usable for molecular simulations, which caused the same MOF to be reported with different structural features in different DBs. We examined thousands of common materials of the two recently updated, very widely used MOF DBs to reveal how structural discrepancies affect simulated CH4, H2, CO2 uptakes and CH4/H2 separation performances of MOFs. Results showed that DB selection has a significant effect on the calculated gas uptakes and ideal selectivities of materials at low pressure. A detailed analysis on the curated structures was provided to isolate the critical elements of MOFs determining the gas uptakes. Identification of the top‐performing materials for gas separation was shown to strongly depend on the DB used in simulations. We examined thousands of common materials in two widely used computation‐ready metal–organic framework databases (MOF DBs) to reveal how structural discrepancies affect simulated CH4, H2, CO2 uptakes and CH4/H2 separation performances of MOFs. Identification of the top‐performing materials for gas separation was shown to strongly depend on the DB used in simulations.
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