Patent number: 7087551
Abstract: Disclosed is an oxide catalyst comprising an oxide represented by the formula Mo1VaNbbXcYdZeQfOn (wherein: X is at least one element selected from the group consisting of Te and Sb; Y is at least one element selected from the group consisting of Al and W; Z is at least one element selected from the group consisting of elements which individually form an oxide having a rutile structure and a Z oxide having a rutile structure is used as a source of Z for producing the catalyst; Q is at least one element selected from the group consisting of titanium, tin, germanium, lead, tantalum, ruthenium, rhenium, rhodium, iridium, platinum, chromium, manganese, technetium, osmium, iron, arsenic, cerium, cobalt, magnesium, nickel and zinc, and a Q compound not having a rutile structure is used as a source of Q for producing the catalyst; and a, b, c, d, e, f and n are, respectively, the atomic ratios of V, Nb, X, Y, Z, Q and O, relative to Mo).
Type:
Grant
Filed:
August 30, 2002
Date of Patent:
August 8, 2006
Assignee:
Asahi Kasei Kabushiki Kaisha
Inventors:
Satoru Komada, Hidenori Hinago, Osamu Nagano, Mamoru Watanabe
Patent number: 5231214
Abstract: A process for producing a nitrile, which comprises subjecting an alkane and ammonia in the gaseous state to catalytic oxidation in the presence of an oxide of the formula:Mo.sub.a V.sub.b Te.sub.c Nb.sub.d X.sub.x O.sub.n ( 1)wherein X is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, Al, Ga, Tl, In, Ti, Zr, Hf, Ta, Cr, Mn, W, Fe, Ru, Co, Rh, Ni, Pd, Pt, Zn, Sn, Pb, As, Sb, Bi, La and Ce,when a=1,b=0.01 to 1.0,c=0.01 to 1.0,d=0 to 1.0, andx=0.0005 to 1.0,and n is a number such that the total valency of the metal elements is satisfied.
Type:
Grant
Filed:
May 8, 1992
Date of Patent:
July 27, 1993
Assignee:
Mitsubishi Kasei Corporation
Inventors:
Takashi Ushikubo, Kazunori Oshima, Tiaki Umezawa, Ken-ichi Kiyono