碳化作用
惰性
材料科学
化学工程
醇盐
烧结
多孔性
惰性气体
活化能
矿物学
化学
冶金
催化作用
复合材料
物理化学
有机化学
工程类
作者
Masahiko Aihara,Toshiyuki Nagai,Junro Matsushita,Yoichi Negishi,Haruhiko Ohya
出处
期刊:Applied Energy
[Elsevier]
日期:2001-07-01
卷期号:69 (3): 225-238
被引量:208
标识
DOI:10.1016/s0306-2619(00)00072-6
摘要
Cyclic reaction performances of solid reactants for a CaO–CO2 chemical heat-pump designed for upgrading and storing high-temperature thermal energy were studied. Solid reactants composed of CaO as the reactant and CaTiO3 as the inert framework were prepared using the conventional powder method or the metal alkoxide method. Upon experiments of cyclic operation between CaO carbonation and CaCO3 decarbonation at 1023K, the reaction reversibility of the solid reactants with the inert CaTiO3 framework was steady, whereas that of the solid reactant without the inert framework decreased with sintering of the solid particles during cyclic operation. Reaction rates for the first carbonation and the decarbonation of solid reactant prepared using the alkoxide method were about 1.8 and 2.4 times faster, respectively, than for those prepared by the powder method due to the smaller average diameter of reactant particles derived from the alkoxide method.
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