Abstract: The invention relates to the preparation of BF3 and H2SO4 of commercial grade from boron trifluoride hydrate effluents containing organic impurities. The process consists essentially in reacting the said effluent with oleum, in recovering the gaseous boron trifluoride thereby liberated and in subjecting the sulphuric acid by-product to treatment with hydrogen peroxide and to purging with air.

Abstract: The invention relates to the preparation of BF3 and H2SO4 of commercial grade from boron trifluoride hydrate effluents containing organic impurities.

Abstract: The invention relates to the production of colorless aqueous solutions of fluoboric acid from colored effluents of boron trifluoride hydrate. The process essentially consists of treating the colored effluent with an aqueous solution of HF, and then placing the solution obtained in contact with an activated carbon.

Abstract: The objectionable hypochlorite values, ClO.sup.- ions, contained in a solution of an alkali metal chlorate produced by the electrolysis of an aqueous solution of the corresponding chloride of the alkali metal, are effectively destroyed (consumed) without adversely affecting the valence state of the hexavalant chromium values also contained therein, by intimately contacting such chlorate solution with an effective amount of hydrogen peroxide such that the molar ratio hydrogen peroxide/hypochlorites is at least one and no greater than 3 and the molar ratio available hydrogen peroxide/hypochlorites is at least one.

Abstract: The objectionable hypochlorite values, ClO.sup.- ions, contained in a solution of an alkali metal perchlorate produced by the electrolysis of an aqueous solution of the corresponding chlorate of the alkali metal, are effectively destroyed (consumed) without adversely affecting the valence state of the hexavalent chromium values also contained therein, by intimately contacting such perchlorate solution with an effective amount of hydrogen peroxide such that the molar ratio available hydrogen peroxide/hypochlorites is at least one.

Abstract: Hydrogen peroxide is produced from hydrogen and oxygen by (a) intimately contacting gaseous hydrogen at superatmospheric pressure with an inorganic aqueous reaction medium which includes a catalytically effective amount of a platinum group metal catalyst, (b) next diminishing the amount of hydrogen in the gaseous phase to a value under the explosive/flammable limits of admixture thereof with the gaseous oxygen introduced in step (c), and (c) intimately contacting and reacting the aqueous reaction medium and diminished gaseous phase with a source of gaseous oxygen.

Abstract: A process for the cyclic production of hydrogen peroxide comprising alternating the reduction of oxidation of a quinone in a solvent medium and extracting the hydrogen peroxide. The solvent medium contains a carboxylic acid amide comprising at least one aryl group to satisfy one of the following conditions:(a) an aryl group is attached to the nitrogen or the carbon of the carbonyl; or(b) an aryl group is attached to the nitrogen and another aryl group, which is the same or different, is attached to the nitrogen or to the carbon of the carbonyl.

Abstract: A stabilized acidic aqueous composition comprising hydrogen peroxide, metallic ions, and 3-amino-1,2,4-triazine, said triazine being present in an amount sufficient to improve the stability of said composition against decomposition of said peroxide and the methods of utilizing such composition to treat metallic surfaces and to precipitate hydrated uranium peroxide from a solution containing uranium dissolved therein.

Abstract: Process for improving the stability of aqueous solutions containing hydrogen peroxide, metal ions and hydrofluoric acid which can be partially in the form of salts, comprising adding to the said solution at least one hydroxide selected from alkali metal hydroxides, ammonium hydroxide, or mixtures thereof in an amount which is insufficient to neutralize all the acidity present. The resultant novel stabilized solutions according to the invention are used in the surface treatment of metals especially of stainless steels.

Abstract: Catalysts for the preparation of unsaturated nitriles by the ammoxidation of olefins, the catalysts comprising a combination of the oxides of antimony, tin, zirconium, copper, and tungsten having the general formula:Sb.sub.a Sn.sub.b Zr.sub.c Cu.sub.d W.sub.e O.sub.fwhere a is from 1 to 10, b is from 1 to 10, c is 1, d is from 0.01 to 5, e is from 0.01 to 0.05, and f is the number of oxygen atoms in the oxidized combination with the metallic elements, together with processes for the preparation of nitriles by olefin ammoxidation, particularly acrylonitrile produced by ammoxidizing propylene, using such catalysts.

Abstract: Catalysts for the preparation of unsaturated nitriles by the ammoxidation of olefins, such catalysts being oxides of antimony and of tin together with one or more polyvalent metal oxides and one or more monovalent metal compositions of the general formulaSb.sub.a Sn.sub.b (Me.sub.c).sub.m (A.sub.d).sub.n O.sub.e (I)wherein Me represents a polyvalent metal and A a monovalent metal; a is from one to ten, b is from one to ten, c is from 0.01 to five, and d is from 0.01 to five; m and n are integers equal to or greater than one; and e is the number of oxygen atoms combined with the metallic elements, together with processes for preparing nitriles by ammoxidation of olefins, especially acrylonitrile from propylene, utilizing such ammoxidation catalysts.

Abstract: Catalysts for the preparation of unsaturated nitriles by the ammoxidation of olefins, the catalysts comprising oxides of antimony, tin, tungsten, and copper having the general formulaSb.sub.a Sn.sub.b W.sub.c Cu.sub.d O.sub.e (I)wherein a is from one to ten, b is from one to ten, c is from 0.01 to 5, d is from 0.01 to 5, and e is the number of oxygen atoms in combination with the metallic elements of formula (I), together with processes for preparing unsaturated nitriles by olefin ammoxidation, and particularly for preparing acrylonitrile from propylene, utilizing such catalysts.