Browse Prior Art Database

Original Publication Date: 1976-Aug-31
Included in the Prior Art Database: 2004-Mar-27

Publishing Venue

Xerox Disclosure Journal


The naturally occurring and synthetic crystalline alumino silicates known collectively as zeolites may, by the process of ion exchange, be loaded with various cations including those of the ferromagnetic metals, nickel and iron. Subsequent to ion exchange these cations can be reduced to their zero valent state by hydrogen or carbon monoxide to produce a material having ferromagnetic sus~ ceptibility, It is proposed that nickel or iron ion exchange and subsequent reduction of various zeolites be investigated and that the particulate porous ferromagnetic materials so obtained be further investigated with respect to their absorption properties for dyes, Since th~ channels and pores in zeolites X and Y are 8 to 9 A in diameter it is likely that dye molecules will be absorbable to produce colored, ferromagnetic particles, Although it is possible that the reduced metal containing zeolites will be black, it is not inevitable, Thus, palladium (II) ion exchanged zeolite Y is white after hydrogen reduction to Pd°, It is also noted that even in the event of obtaining a black reduced product, subsequent dry absorption/ could yield a colored material for the same reasons that a colored paint on a black background exhibits its normal color,