Recovery of low-concentration hydrogen using alloy LaNi5 based pressure swing adsorption

Abstract

A cost-effective strategy for long distance hydrogen transportation entails its integration into existing natural gas pipelines. The demand for efficient separation of the minor component hydrogen poses a challenge for post co-transportation gas treatment to meet the specifications of various industrial applications. While porous materials for selective H2 adsorption are extremely rare, certain metal alloys known for their hydrogen storage property via reversible hydriding/dehydriding reaction show great promise for selective H2 separation. Despite the unfavorable and harsh reaction conditions of most metal hydrides, LaNi5 displays unique H2 adsorption properties at moderate temperatures and..