| 摘要 |
1,126,047. Fuel cell membrane. DOUGLAS AIRCRAFT CO. Inc. 6 Oct., 1965 [20 Oct., 1964], No. 42482/65. Heading C1J. [Also in Division H1] A fuel cell ion exchange membrane in compressed sintered form comprises an inorganic ion exchange material consisting of insoluble hydrous metal oxides, insoluble metal hydroxides, or water insoluble acid salts and, as a water retaining agent, from 1 to 80%, by weight of the composition, of a substance consisting of silicic acid, an aluminosilicate, phosphorus pentoxide, aluminium sulphate, copper sulphate, colloidal silica, silica gel, activated alumina, ammonium acid phosphate or calcium chloride. The ion exchange materials exemplified are the hydrous oxides of Ti, Sb, W, Si, Sc, Bi, V, Cr and Al; the hydroxides of Zn, Cu and Cd; and as water insoluble acid salts, zirconium phosphate, zirconium sulphate, titanium molybdate, titanium phosphate, and the other Ti, Sb, W and V salts of phosphoric, molybdic and sulphuric acid. The mixture of ion exchange material and water retaining agent can be granulated if desired and pressed into discs which are then sintered; in Example 1 the mixture is compressed at a pressure of 15 tons per square inch into discs of 2-inch diameter and 0À30 inches thickness which are then sintered at about 300‹ C. for about 24 hours. |
