A review: methane capture by nanoporous carbon materials for automobiles

Abstract

Global warming is considered one of the great challenges of the twenty-first century. In order to reduce the ever-increasing amount of methane (CH 4 ) released into the atmosphere, and thus its impact on global climate change, CH 4 storage technologies are attracting significant research interest. CH 4 storage processes are attracting technological interest, and methane is being applied as an alternative fuel for vehicles. CH 4 storage involves many technologies, among which, adsorption processes such as processes using porous adsorbents are regarded as an important green and economic technology. It is very important to develop highly efficient adsorbents to realize techno-economic systems for CH 4 adsorption and storage. In this review, we summarize the nanomaterials being used for CH 4 adsorption, which are divided into non-carbonaceous (e.g., zeolites, metal-organic frameworks, and porous polymers) and carbonaceous materials (e.g., activated carbons, ordered porous carbons, and activated carbon fibers), with a focus on recent research.

Evolution of the Design of CH4 Adsorbents

“…For each class of material, there has been an evolution in paradigm shifts for CH 4 design. Carbonaceous adsorbents possess many properties that make them good candidates as adsorbents for CH 4 storage [25]. Among their beneficial properties are their high strength, good chemical and thermal stability, high surface area, and low cost.…”

Potential models for the simulation of methane adsorption on graphene: development and CCSD(T) benchmarks

“…3 However, the use of any gas as energy resource poses problems of safe storage and transportation in useful amounts and thus materials are needed that can safely trap the gas in high concentrations and release it in a controlled fashion when necessary. 4 For these reasons, a wide range of materials have been investigated for adsorption of methane. Amongst them, water chlatrates used to solidify methane have been proposed, 5 as well as adsorption onto metal-organic frameworks, 6,7 zeolites, 8,9 activated carbon 10 and graphite.…”

The Effects of Methane Storage Capacity Using Upgraded Activated Carbon by KOH

“…As an alternative method for natural gas storage, adsorbed natural gas (ANG) systems, which can store natural gas at a relatively lower pressure (3)(4), have been considered and intensively studied [6][7][8][9][10]. The CH 4 storage capacity is the same or even higher than that of compressed natural gas (CNG) at 20 MPa.…”