公开(公告)号：US5514633A

公开(公告)日：1996-05-07

申请号：US235694

申请日：1994-04-29

申请人： Yoshitaka Noguchi ,  Shigeru Adachi ,  Masayuki Abe ,  Sueo Takashima ,  Masayuki Hashimoto

发明人： Yoshitaka Noguchi ,  Shigeru Adachi ,  Masayuki Abe ,  Sueo Takashima ,  Masayuki Hashimoto

IPC分类号： B01D53/28 ,  B01J20/18 ,  C07C17/38 ,  B01J29/06

CPC分类号： C07C17/38 ,  B01J20/186

摘要： A method for the production of a desiccant for HFC-32, HFC-152a and blended refrigerants containing HFC-32 and/or HFC-152a comprises immersing formed articles of 3A type zeolite having 20 to 60% in ion equivalent weight of its sodium ions exchanged for potassium ions in an aqueous solution of at least one member selected from the group consisting of sodium silicate and potassium silicate, thereby effecting deposition of SiO.sub.2 on the formed articles, removing the SiO.sub.2 -deposited formed articles from the aqueous solution, dehydrating the wet formed articles and subsequently activating the dehydrated formed articles. Also provided is a desiccant for HFC-32, HFC-152a and blended refrigerants containing HFC-32 and/or HFC-152a produced by this method.

摘要翻译： 生产HFC-32，HFC-152a和含HFC-32和/或HFC-152a的混合制冷剂的干燥剂的方法包括将其钠离子的离子当量为20〜60％的3A型沸石 在选自硅酸钠和硅酸钾中的至少一种的水溶液中交换钾离子，从而在成形物上沉积SiO 2，从水溶液中除去SiO 2沉积的成型制品，使湿 成型制品，然后活化脱水成型制品。 还提供了通过该方法制备的HFC-32，HFC-152a和含有HFC-32和/或HFC-152a的混合制冷剂的干燥剂。