Evolution of the Design of CH₄ Adsorbents

In this review, the evolution of paradigm shifts in CH₄ adsorbent design are discussed. The criteria used as characteristic of paradigms are first reports, systematic findings, and reports of record CH₄ storage or deliverable capacity. Various paradigms were used such as the systematic design of micropore affinity and pore size, functionalization, structure optimization, high throughput in silico screening, advanced material property design which includes flexibility, intrinsic heat management, mesoporosity and ultraporosity, and process condition optimization. Here, the literature is reviewed to elucidate how the approach to CH₄ adsorbent design has progressed and provide strategies that could be implemented in the future.