Method for producing acrylic acid from propane in the...

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

Reexamination Certificate

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Reexamination Certificate

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10497210

ABSTRACT:
The invention concerns a method for producing acrylic acid from propane in the absence of molecular oxygen. Said method is characterized in that it consists in passing a gas mixture free of molecular oxygen and comprising propane, water vapour, as well as, optionally, an inert gas, over a catalyst including molybdenum, vanadium, tellurium, oxygen and at least another element X selected among niobium, tantalum, tungsten, titanium, aluminium, zirconium, chromium, manganese, iron, ruthenium, cobalt, rhodium, nickel, palladium, platinum, antimony, bismuth, boron, indium and cerium, and on a co-catalyst of formula (II): Mo1Bia′Feb′Coc′Nid′Ke′Sbf′Tig′Sih′Cai′Nbj′Tek′Pbl′Wm′Cun′. The invention also concerns a solid catalytic composition comprising said catalyst and co-catalyst and the use of said composition for producing acrylic acid from propane.

REFERENCES:
patent: 4341717 (1982-07-01), Callahan et al.
patent: 5380933 (1995-01-01), Ushikubo et al.
patent: 6281384 (2001-08-01), Contracter et al.
patent: 0608838 (1994-08-01), None
patent: WO 0104079 (2001-01-01), None

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