arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2602.14962cond-mat.mtrl-sciphysics.chem-phphysics.comp-ph
收藏

实用且准确的密度泛函用于过渡金属异质催化

Practical and accurate density functionals for transition-metal heterogeneous catalysis

Flatiron Institute(平顿研究所);Columbia University(哥伦比亚大学)

Benjamin X. Shi, Timothy C. Berkelbach

AI总结:

本文提出一种设计针对过渡金属表面催化过程的新泛函框架,开发出混合和双混合泛函,实现了前所未有的准确性,适用于39种实验吸附反应,同时在17种势垒高度上表现均衡。

摘要:

密度泛函理论(DFT)支撑了现代原子istic过渡金属表面模拟。它可以预测与催化性能相关的关键性质,如吸附能和势垒高度,从而在理性催化剂设计中开辟新范式。这些应用需要可靠的密度泛函,然而在这些性质上实现过渡金属化学精度(13 kJ/mol)仍然具有挑战性。我们介绍了一种设计新泛函的框架,该框架基于最近的非自洽方法。在此框架内,我们开发了一种混合和双混合泛函,实现了前所未有的准确性,后者在39种实验吸附反应中平均达到过渡金属化学精度。此外,这两种泛函在17种势垒高度上表现均衡,并且在标准泛函的定性失败上表现正确,包括Pt(111)上的CO吸附和Ni(111)上的石墨烯吸附。它们计算高效,可轻松集成到现有DFT代码中,并通过开源工作流支持以促进采用。更广泛地说,这一框架为异质催化和复杂材料提供了改进泛函的系统途径。

英文摘要:

Density functional theory (DFT) underpins modern atomistic simulations of transition-metal surfaces. It can predict key properties linked to catalytic performance, such as adsorption energies and barrier heights, enabling new paradigms in rational catalyst design. These applications require reliable density functionals, however achieving transition-metal chemical accuracy (13 kJ/mol) on these properties remains challenging. We introduce a framework for designing new functionals tailored to catalytic processes on transition-metal surfaces, building on recent non-self-consistent approaches. Within this framework, we develop a hybrid and a double-hybrid functional that achieve unprecedented accuracy, with the latter reaching transition-metal chemical accuracy on average across 39 experimental adsorption reactions. In addition, both functionals demonstrate balanced performance for 17 barrier heights and correct qualitative failures of standard functionals, including CO adsorption on Pt(111) and graphene on Ni(111). They are computationally efficient, readily integrated into existing DFT codes, and supported by open-source workflows to facilitate adoption. More broadly, this framework provides a systematic route towards improved functionals for heterogeneous catalysis and complex materials.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑