Effect of Transition Metal Mixing on Reactivities of Magnesium Oxide for Chemical Heat Pump

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Junichi Ryu¹  Yukitaka Kato¹  Rui Takahashi¹  Naoya Hirao¹ 

[1] Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

关键词: Chemical Heat Pump;    Magnesium Oxide;    Mixed Oxide;   

DOI  :  10.1252/jcej.07WE171

来源: Maruzen Company Ltd

【 摘 要 】

References(8)Cited-By(9)The mixing effect of transition metal ion into magnesium hydroxide on dehydration and hydration reactivity was studied to develop a new material for chemical heat-storage, because the mixing effect was expected to reduce dehydration-temperature, corresponding to heat-storage temperature, of authentic magnesium hydroxide. Two-components composite materials mixed with some content of nickel ion or cobalt ion into magnesium hydroxide were tested, respectively. It was demonstrated that the dehydration-temperatures of the composites were shifted to lower temperature below 300°C with increase of nickel or cobalt content in comparison with dehydration-temperature of authentic magnesium oxide of 350°C. These composites showed higher hydration reactivity than that for authentic magnesium oxide under the same reaction condition, and were expected to be applicable to heat utilization of middle-temperature waste heat less than 300°C.

【 授权许可】

Unknown