Process for preparing a macrostructural unit having a...

Details Process for preparing a macrostructural unit having a... Process for preparing a macrostructural unit having a...

B - Operations, Transporting

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B01J 29/06 (2006.01) F02B 1/04 (2006.01)

Patent

CA 1291980

F-3764 A PROCESS FOR PREPARING A MACROSTRUCTURAL UNIT HAVING A CATALYTICALLY-ACTIVE ZEOLITE SURFACE Abstract of the Disclosure A macrostructural unit having a catalytically-active zeolite surface layer is prepared by: (a) mixing a slurry containing one or more of finely divided silica, silica gel, alumina, aluminum hydroxide and kaolin, and having the desired ratio of silicon atoms to aluminum atoms, with plasticizer to form a plastic mass; (b) shaping the plastic mass to a desired configuration; (c) calcining the shaped plastic mass at 500° to 800°C for 1 to 10 hours to form a rigid macrostructural unit having the same configuration as the shaped plastic mass; (d) crystallizing 5 to 80% of the rigid macrostructural unit obtained by calcination to form a crystalline aluminosilicate zeolite layer; and, (e) activating the crystalline aluminosilicate zeolite surface layer.

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