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Dehydration and hydration reactivity of La-based mixed hydroxides for chemical heat storage.

Number: pap. n. 31

Author(s) : RYU J., ISHITOBI H., KATO Y.

Summary

The dehydration and hydration behavior of La-based mixed hydroxides were studied to develop a new material for chemical heat storage. It was demonstrated that the dehydration of La-based mixed hydroxides proceeded at around 300°C, which was lower than that in the case of authentic lanthanum hydroxide. These hydroxides showed higher hydration reactivity than lanthanum oxy-hydroxide (LaOOH), under hydration at 110°C with 7.4 kPa of water vapor after dehydration at 300°C. The heat output capacity of La0.50Y0.50(OH)3 was estimated as 282 kJ kg-1 after dehydration at 300°C. These results indicate that La-based mixed hydroxides are suitable for the utilization of industrial waste heat at around 300°C.

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Pages: 9 p.

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Details

  • Original title: Dehydration and hydration reactivity of La-based mixed hydroxides for chemical heat storage.
  • Record ID : 30014420
  • Languages: English
  • Source: International sorption heat pump conference (ISHPC2014), College Park, United States, March 31-April 2, 2014.
  • Publication date: 2014/03/02

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