Cesium containing multimetal oxide catalyst compositions for the preparation of methacrolein by gas-phase-catalytic oxid
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-023/18
B01J-023/22
B01J-023/28
출원번호
US-0202067
(1994-02-25)
우선권정보
DE-4307381 (1993-03-09)
발명자
/ 주소
Tenten Andreas (Neustadt DEX) Neumann Hans-Peter (Mannheim DEX) Exner Herbert (Waldsee DEX)
출원인 / 주소
BASF Aktiengesellschaft (Ludwigshafen DEX 03)
인용정보
피인용 횟수 :
16인용 특허 :
0
초록▼
Cesium based multimetal oxide compositions which are suitable as catalysts for the gas-phase-catalytic oxidative preparation of methacrolein from isobutene or tert-butanol or its methyl ether. The catalysts are characterized by increased selectivity for the formation of methacrolein. The catalysts h
Cesium based multimetal oxide compositions which are suitable as catalysts for the gas-phase-catalytic oxidative preparation of methacrolein from isobutene or tert-butanol or its methyl ether. The catalysts are characterized by increased selectivity for the formation of methacrolein. The catalysts have locally delimited regions of an oxide composition, preferably (Bi2W2O9), surrounded by the remaining constituents of the multimetal oxide.
대표청구항▼
A multimetal oxide composition of the formula I (Xa1Xb2Ox)p (Xc3Xd4Xe5Xf6Xg7Xh2Oy)q (I) where X1 is bismuth, tellurium, antimony, tin and/or copper, X2 is molybdenum and/or tungsten, X3 is cesium, X4 is an alkaline earth metal, nickel, cobalt, copper, manganese, zinc, tin, cadmium and/or mercury, X5
A multimetal oxide composition of the formula I (Xa1Xb2Ox)p (Xc3Xd4Xe5Xf6Xg7Xh2Oy)q (I) where X1 is bismuth, tellurium, antimony, tin and/or copper, X2 is molybdenum and/or tungsten, X3 is cesium, X4 is an alkaline earth metal, nickel, cobalt, copper, manganese, zinc, tin, cadmium and/or mercury, X5 is iron, chromium, cerium and/or vanadium, X6 is phosphorous, arsenic, boron and/or antimony, X7 is a rare-earth metal, titanium, zirconium, niobium, tantalum, rhenium, ruthenium, rhodium, silver, gold, aluminum, gallium, indium, silicon, germanium, lead, thorium and/or uranium, a is from 0.01 to 8, b is from 0.1 to 30, c is from h/20 to h/6, d is from 0 to 20, e is from 0 to 20, f is from 0 to 6, g is from 0 to 15, h is from 8 to 16, x and y are numbers determined by the valency, presence and amount of the elements in I other than oxygen and p and q are numbers other than zero whose ratio p/q is from 0.1 to 10, which contains the moiety (Xa1Xb2Ox)p in the form of locally differentiated, three-dimensional regions, which differ from their local environment as a result of their chemical composition, Xa1Xb2Ox, which chemical composition is different from that of their local environment, the maximum diameter of said three-dimensional regions, as measured by the longest line passing through the center of gravity of a region and connecting two points on the surface or interface of the region, being from >0 to 200 m
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이 특허를 인용한 특허 (16)
Brazdil, James F.; Toft, Mark A.; Seely, Michael J.; Besecker, Charles J.; Gustaferro, Robert A., Attrition resistant mixed metal oxide ammoxidation catalysts.
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Dieterle, Martin; Hibst, Hartmut; Popel, Wolfgang Juergen; Petzoldt, Jochen; Mueller-Engel, Klaus Joachim, Preparation of catalytically active multielement oxide materials which contain at least one of the elements Nb and W and the elements Mo, V and Cu.
Besecker, Charles J.; Brazdil, Jr., James Frank; Toft, Mark A.; Seely, Michael J.; Gustaferro, Robert A., Process for preparing improved mixed metal oxide ammoxidation catalysts.
Dieterle, Martin; Poepel, Wolfgang Juergen; Berndt, Silke; Felder, Raimund; Unverricht, Signe; Mueller Engel, Klaus Joachim, Thermal treatment of the precursor material of a catalytically active material.
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