膜分離を利用した水素製造(<特集>水素製造・貯蔵の最新動向I)

概要

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Various technologies are commercialized for hydrogen separation and purification processes. Among them, membrane separation is recognized as an energy-saving technique without phase transformation, and furthermore, it makes possible continuous operation, process miniaturization and cheaper cost of process. The idea of coupling catalysis and separation, especially membrane separation, is not new because everyone knows the merits of product separation due to the Le Chatelier's law, but it is now just coming to the stage of practical application. The reason why novel reaction system using membrane reactors is so attractive that one-pass conversion and reaction selectivity will be enhanced compared with existing industrial reaction processes. Hydrogen production reactions via steam reforming of hydrocarbons, and chemical reactions for hydrogen delivery and storage systems are suitable for hydrogen-separating type membrane reactors. In this review thermally-stable hydrogen separation membranes, which can be roughly divided into two types of porous and nonporous (dense) membranes, and developing membrane reactor for highly efficient hydrogen production are introduced.
一般社団法人日本エネルギー学会の論文
2013-11-20