1
Bruno J Barone: Catalyst preparative method. Denka Chemical Corporation, Kenneth H Johnson, December 18, 1979: US04179404 (33 worldwide citation)

The preparation of phosphorus-vanadium oxidation catalyst by the reduction of the valence of vanadium to less than +5 is obtained by employing less than the stoichiometric amount of reducing agent necessary to reduce the valence of the vanadium from +5 to +4, preferably 70 to 98% of the stoichiometr ...


2
Ralph O Kerr, Bruno J Barone: Catalyst and process for preparing maleic anhydride from C.sub.4 hydrocarbons. Petro Tex Chemical Corporation, N Elton Dry, Kenneth J Johnson, September 14, 1976: US03980585 (31 worldwide citation)

A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, copper, an element selected from the group of Te, Zr, Ni, Ce, W, Pd, Ag, Mn, Cr, Zn, Mo, Re, Sm, La, Hf, Ta, Th, Co, U, and Sn, preferably with an al ...


3
Bruno J Barone, Gaylon T Click: Catalyst structure for the partial oxidation of n-butane to produce maleic anhydride. Denka Chemical Corporation, Kenneth H Johnson, August 11, 1981: US04283307 (28 worldwide citation)

Phosphorus-Vanadium oxidation catalyst prepared as tablets with a hole in the center produce higher yields of maleic anhydride from C.sub.4 's, particularly n-butane than the same catalyst without the hole.


4
Bruno J Barone: Partial oxidation catalyst. Denka Chemical Corporation, Kenneth H Johnson, February 17, 1981: US04251390 (25 worldwide citation)

An improvement in the oxidation catalyst used for the partial oxidation of n-butane and containing vanadium and phosphorus mixed oxides which comprises adding a zinc compound in an amount of from about 0.15 to 0.001/l Zn/V to the catalyst during the digestion of the reduced vanadium component by con ...


5
Gaylon T Click, Bruno J Barone: Steam regeneration of phosphorus treated vanadium-phosphorus-oxygen catalysts. Denka Chemical Corporation, Kenneth H Johnson, May 7, 1985: US04515899 (23 worldwide citation)

The useful life of vanadium-phosphorus-oxygen (PVO) catalyst in fixed bed reactors can be substantially extended by treatment with a phosphorus compound followed by steam treatment. The PVO catalysts may be treated with steam after long periods (months) of only phosphorus compound treatment and the ...


6
Bruno J Barone: Oxidation catalysts and process for preparing anhydride from alkanes. Denka Chemical Corporation, Kenneth H Johnson, May 8, 1979: US04153577 (21 worldwide citation)

A catalyst complex useful for the partial oxidation of alkanes to the corresponding anhydrides, e.g., converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase, comprising as components vanadium, phosphorus, oxygen, Cu, Mo, Ni, Co, Cr, Nd, Ce, Ba, Y and Sm.


7
Bruno J Barone, Ralph O Kerr: Catalyst for preparing maleic anhydride from C.sub.4 hydrocarbons. Petro Tex Chemical Corporation, Kenneth H Johnson, N Elton Dry, April 19, 1977: US04018709 (19 worldwide citation)

A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, an element selected from the group of U, W, or a mixture of elements from the group Zn, Cr, U, W, Cd, Ni, B or Si.


8
Bruno J Barone: Phosphorous/vanadium oxidation catalyst. Scientific Design Company, Kenneth H Johnson, November 16, 1993: US05262548 (17 worldwide citation)

An improvement in the oxidation catalyst used for the partial oxidation of n-butane and containing vanadium and phosphorus, zinc and lithium mixed oxides which comprises adding a molybdenum compound modifier in an amount of from about 0.005 to 0.025/1 Mo/V to the catalyst during the digestion of the ...


9
Ralph O Kerr, Bruno J Barone: Catalyst and process for preparing maleic anhydride from C.sub.4 hydrocarbons. Denka Chemical Corporation, Kenneth H Johnson, October 31, 1978: US04123388 (16 worldwide citation)

A catalyst complex useful for converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase comprising as components vanadium, phosphorus, copper, an element selected from the group of Te, Zr, Ni, Ce, W, Pd, Ag, Mn, Cr, Zn, Mo, Re, Sm, La, Hf, Ta, Th, Co, U, and Sn, preferably with an al ...


10
Bruno J Barone: Phosphorous/vanadium oxidation catalyst. Scientific Design Company, Kenneth H Johnson, October 27, 1992: US05158923 (15 worldwide citation)

An improvement in the oxidation catalyst used for the partial oxidation of n-butane and containing vanadium and phosphorus, zinc and lithium mixed oxides which comprises adding a molybdenum compound modifier in an amount of from about 0.005 to 0.025/1 Mo/V to the catalyst during the digestion of the ...