CATALYST FOR RECOMBINATION OF HYDROGEN AND OXYGEN AND METHOD OF MAKING SAID CATALYST Russian patent published in 2009 - IPC B01J23/40 B01J23/16 B01J37/02 B01J21/06 G21C9/06 B01J37/34 

FIELD: chemistry.

SUBSTANCE: invention can be used for hydrogen recombination in reactor sections of nuclear power stations and other facilities. Description is given of a catalyst for recombination of hydrogen and oxygen, containing a solid porous carrier with hydrophobisated catalytic coating of a platinoid metal. This catalyst is distinguished by that, the carrier is made from a valve metal, obtained using powder metallurgical technique, with specific surface are of 0.05-1.50 m²/g; the catalyst carrier is made from porous plates of titanium or o tantalum, or niobium, or zirconium of thickness 0.3-2.0 mm. Described also, is a method of making the said catalyst, involving saturation of the carrier with a solution of platinoid compound, reduction of the said compound to a metal, as well as hydrophobisation of the catalytic coating by moistening it with a suspension of fluorine-containing polymer with an organic stabiliser and subsequent calcination. This method is distinguished by that, the carrier is kept in the suspension for 5-30 s. The carrier is held in a single position and all stages for preparation of hydrophobisated catalytic coating are carried out in that position. Translational oscillations at frequency 1-2 Hz are imparted when saturating the carrier.

EFFECT: provision for reliable functioning of the catalyst for recombination of hydrogen and oxygen in conditions of prolonged contact with wet medium, as well as cutting on preparation time.

3 cl, 1 tbl, 1 ex, 2 dwg