H2 Adsorption in a Porous Crystal: Accurate First-Principles Quantum Simulation

The Journal of Physical Chemistry. a
Jordan H D'ArcyMichael A Collins

Abstract

A general method is presented for constructing, from ab initio quantum chemistry calculations, the potential energy surface (PES) for H2 absorbed in a porous crystalline material. The method is illustrated for the metal-organic framework material MOF-5. Rigid body quantum diffusion Monte Carlo simulations are used in the construction of the PES and to evaluate the quantum ground state of H2 in MOF-5, the zero-point energy, and the enthalpy of adsorption at 0 K.

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