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Title:
ADSORBING AGENT COMPRISING ZEOLITE FOR HEAT PUMP AND METHOD FOR PREPARATION THEREOF AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/011859
Kind Code:
A1
Abstract:
An adsorbing agent which exhibits a water adsorption amount of 28 wt % or more at 25°C under a steam partial pressure of 5 Torr and a difference between the water adsorption amount at 25°C under a partial pressure of steam of 5 Torr and that at 100°C under a steam partial pressure of 15 Torr of 15 to 25 wt %; and a method for preparing the adsorbing agent, which comprises subjecting an exchangeable cation in a zeolite to an ion exchange treatment, and then heating the resulting zeolite in a stream of air or nitrogen or in the presence of steam. The above adsorbing agent is advantageous in that it exhibits a great water adsorption amount at an ordinary temperature under a relatively low partial pressure, and also a low water adsorption amount at a relatively low regeneration temperature, and thus exhibits a great effective adsorption amount, and can be suitably used for a zeolite-water heat pump system and an open cycle moisture adsortion-desorption system.

Inventors:
ITABASHI KEIJI (JP)
HARADA MASASHI (JP)
SATO KOICHI (JP)
Application Number:
PCT/JP2004/010819
Publication Date:
February 10, 2005
Filing Date:
July 29, 2004
Export Citation:
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Assignee:
TOSOH CORP (JP)
ITABASHI KEIJI (JP)
HARADA MASASHI (JP)
SATO KOICHI (JP)
International Classes:
B01J20/18; F25B17/08; (IPC1-7): B01J20/18; C01B39/02; C01B39/20; F25B17/08
Domestic Patent References:
WO2002066910A12002-08-29
Foreign References:
JP2002028482A2002-01-29
JP2003114067A2003-04-18
JP2004132690A2004-04-30
Attorney, Agent or Firm:
Uchida, Yukio (Sunny Port Shiba 1005 5-10 Shiba 2-chome, Minato-k, Tokyo 14, JP)
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