Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Patent
1984-06-14
1985-08-20
Konopka, P. E.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
502 62, 423580, 423648R, B01J 3106, B01J 2342, B01D 502
Patent
active
045364885
ABSTRACT:
A crystalline, silica platinum catalyst structure is provided by soaking a hydrophobic, high surface area, crystalline silica (SiO.sub.2) lattice essentially free of aluminum oxide in the SiO.sub.2 lattice, such as silicalite in an aqueous solution of Pt(NH.sub.3).sub.4 Cl.sub.2 and then, drying, reducing and cooling the crystalline silica to leave, catalyst crystallites of platinum on the crystalline silica and in the pores thereof, and then providing an outer, porous, membrane coating of high molecular weight, organic polytetrafluoroethylene, polymeric material on the coated crystallites. The platinized, crystalline silica may be slurried with, polytetrafluoroethylene and a ceramic support coated with the slurry, so that a water repellent, water vapor and hydrogen or oxygen gas permeable, polytetrafluoroethylene matrix is provided on the support with the platinized, crystalline silica dispersed in the matrix. The catalyst has a high platinum content and high platinum dispersion and is particularly useful for hydrogen isotope exchange between liquid water and gaseous hydrogen or for such exothermic reactions as combining hydrogen and oxygen.
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Dalla Lana Ivo G.
Otto Fred D.
Paterson Linda M.
Rangwala Huseni A.
Rolston John H.
Atomic Energy of Canada Limited
Konopka P. E.
Lemon Francis W.
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