Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Phosphorus or compound containing same
Patent
1991-03-06
1992-12-08
Shine, W. J.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Phosphorus or compound containing same
502347, 502348, B01J 2106, B01J 2304, B01J 2322, B01J 2350
Patent
active
051698200
ABSTRACT:
The invention presents catalysts for producing phthalic anhydride by vapor phase catalytic oxidation of orthoxylene and/or naphthalene with molecular oxygen or gas containing molecular oxygen. The catalyst is prepared by supporting a catalytic active substance comprising 1 to 20 parts by weight (hereinafter abbreviated "parts") of vanadium oxide as V.sub.2 O.sub.3, 99 to 80 parts of anatase type titanium dioxide with specific surface area of 10 to 60 m.sup.2 /g as TiO.sub.2 and per 100 parts of the sum of these two ingredients, 0.05 to 1.2 parts of at least one element selected from potassium, cesium, rubidium and thallium as oxide, and 0.05 to 2 parts of silver as Ag.sub.2 O on a heat resistant inorganic carrier. The catalyst may also contain, per 100 parts in total of vanadium oxide and titanium dioxide, 0 to 1 part of niobium as Nb.sub.2 O.sub.5, 0 to 1.2 parts of phosphorus as P.sub.2 O.sub.3, and 0 to 5 parts of antimony as Sb.sub.2 O.sub.3 (however, contents of niobium, phosphorus and antimony will not be zero at the same time).
REFERENCES:
patent: 3232955 (1966-02-01), Nonnenmacher et al.
patent: 3843552 (1974-10-01), Jouy et al.
patent: 3909457 (1975-09-01), Friedrichsen et al.
patent: 4046780 (1977-09-01), Nakanishi et al.
patent: 4356112 (1982-10-01), Nakanishi et al.
patent: 4481304 (1984-11-01), Sato et al.
Japanese Patent Publication 47-15323 (Japanese Official Patent Gazette of Shows 47-15323) with translation of p. 1 from lines 28-35 of column 1.
Japanese Patent Publication 49-41036 (Japanese Official Patent Gazette of Shows 49-41036) with translation of p. 1 from lines 26-35 of column 1.
Japanese Patent Publication 52-4538 (Japanese Official Patent Gazette of Shows 53-4538) with translation of p. 1, from line 17 of column 1 to line 6 of column 2.
Japanese Laid-open Patent 47-5661 (Japanese Official Patent Provisions Publication of Shows 47-5661) with translation of p. 1, line 4 of left column to line 6 of right column; p. 2, from line 15 from line 15 of a left column to line 1 of right column in lower hals.
Japanese Laid-open Patent 49-89694 (Japanese Official Patent Provisional Publication of Shows 49-89694) with translation of p. 1, line 5-15 and p. 2, line 16 of R column on line 2 of L column.
Japanese Patent Publication 59-1378 (Japanese Official Patent Gazette of Shows 59-1378) with translation of p. 1, line 19-35 of column 1.
Chemical Abstract No. 67(9): 43560h dated Aug. 28, 1967.
Chemical Abstract No. 68(25): 117462x dated Jun. 17, 1968.
Chemical Abstract No. 78(15): 97384z dated Apr. 6, 1973.
Chemical Abstract No. 86(26): 195651u dated Jun. 27, 1977.
Chemical Abstract No. 90(7): 5462h dated Feb. 12, 1979.
Kawabata Tatsuya
Nishio Chisako
Okuno Masaaki
Tanaka Shinya
Ueda Kenji
Nippon Shokubai Kagaku Kogyo & Co., Ltd.
Shine W. J.
LandOfFree
Catalyst for producing phthalic anhydride does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst for producing phthalic anhydride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst for producing phthalic anhydride will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-961007