Kabushiki Kaisha Toshiba

Toshiyuki Ohashi

Kazuaki Nakagawa

Yoshihiro Akasaka

Norihiro Tomimatsu

Hideyuki Ohzu

Kenji Essaki

Sawako Yoshikawa

Kato Masahiro

Disclosed is a carbon dioxide gas absorbent containing lithium silicate reacting with a carbon dioxide gas to form lithium carbonate and represented by the general formula, Li Si O , where x, y, z are integers meeting the requirement of x&plus;4y&minus;2z&equals;0. The lithium content x in the general formula should desirably be at least 4.

Carbon dioxide gas absorbent containing lithium silicate

The carbon dioxide gas absorbent of the present invention exhibits a high carbon dioxide gas absorption performance from an initial stage of the use. The carbon dioxide gas absorbent comprises of primary particles each containing lithium zirconia serving as a matrix, and eutectic compound molecules each containing lithium carbonate and at least one element selected from the group consisting of alkali metals excluding lithium, and alkali earth metals, which are dispersed in the matrix.

Method for manufacturing a carbon dioxide gas absorbent

The chemical reaction apparatus of the present invention can increase the producing rate of the main product gas by effectively removing carbon dioxide from the reaction site, the carbon dioxide generated together with the main product as the raw material gas is made to react at a high temperature of 400.degree. C. The reaction apparatus comprises a reactor for generating a main product gas and a byproduct gas which is carbon dioxide, by making a raw material gas to react, and lithium zirconate granular material placed in the reactor, to react with the byproduct carbon dioxide gas, thereby preparing a carbonate salt.

Chemical reaction apparatus and method of collecting main product gas

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Kawasaki, Japan

Toshiyuki Ohashi