Composite-oxide catalyst and process for production of acrylic acid using said catalyst
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-051/16
C07C-051/235
출원번호
US-0764852
(2004-01-26)
등록번호
US-7429678
(2008-09-30)
우선권정보
JP-2003-051794(2003-02-27)
발명자
/ 주소
Tanimoto,Michio
Hirao,Harunori
출원인 / 주소
Nippon Shokubai Co., Ltd.
인용정보
피인용 횟수 :
1인용 특허 :
11
초록▼
There are disclosed a catalyst and a process for production of acrylic acid using this catalyst, wherein, even under conditions where hot spots are formed, the catalyst is excellent in activity, selectivity, and catalyst life time and displays stable performances for a long time. The catalyst is sh
There are disclosed a catalyst and a process for production of acrylic acid using this catalyst, wherein, even under conditions where hot spots are formed, the catalyst is excellent in activity, selectivity, and catalyst life time and displays stable performances for a long time. The catalyst is shown by the following formula (1): description="In-line Formulae" end="lead"MoaVbWcCudAeB fCgOx (1)description="In-line Formulae" end="tail" (wherein: A is at least one species selected from among cobalt, nickel, iron, lead, and bismuth; B is at least one species selected from among antimony, niobium, and tin; and C is at least one species selected from among silicon, aluminum, titanium, and zirconium; and further, a, b, c, d, e, f, g, and x are atomic ratios of Mo, V, W, Cu, A, B, C, and O respectively; and, in the case of a=12, the following inequalities are satisfied: 2≦b≦15; 0
대표청구항▼
What is claimed is: 1. A process for production of acrylic acid, which is a process comprising the step of carrying out a catalytic gas phase oxidation reaction of acrolein with molecular oxygen or a molecular-oxygen-containing gas, thereby producing the acrylic acid; wherein the reaction is carrie
What is claimed is: 1. A process for production of acrylic acid, which is a process comprising the step of carrying out a catalytic gas phase oxidation reaction of acrolein with molecular oxygen or a molecular-oxygen-containing gas, thereby producing the acrylic acid; wherein the reaction is carried out in the presence of a composite-oxide catalyst shown by the following general formula (1): description="In-line Formulae" end="lead"MoaVbWcCudAeB fCgOx (1)description="In-line Formulae" end="tail" (wherein: Mo is molybdenum; V is vanadium; W is tungsten; Cu is copper; A is at least one element selected from among cobalt, nickel, iron, lead, and bismuth; B is at least one element selected from among antimony, niobium, and tin; C is at least one element selected from among silicon, aluminum, titanium, and zirconium; and O is oxygen; and further, a, b, c, d, e, f, g, and x denote atomic ratios of Mo, V, W, Cu, A, B, C, and O respectively; and, in the case of a =12, the following inequalities are satisfied: 2≦b≦15; 0
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이 특허에 인용된 특허 (11)
Takata Masahiro (Himeji JPX) Aoki Ryuji (Himeji JPX) Sato Takahisa (Himeji JPX), Catalyst for oxidation of propylene.
Engelbach Heinz (Limburgerhof DT) Krabetz Richard (Kirchheim DT) Duembgen Gerd (Dannstadt-Schauernheim DT) Willersinn Carl-Heinz (Ludwigshafen DT) Lebert Ulrich (Ludwigshafen DT) Thiessen Fritz (Ludw, Manufacture of acrylic acid by oxidation of propylene with oxygen-containing gases in two separate catalyst stages.
Brazdil James F. (Bedford OH) Suresh Dev D. (Macedonia OH) Grasselli Robert K. (Chagrin Falls OH), Process for forming multi-component oxide complex catalysts.
Karpov, Andrey; Horstmann, Catharina; Dobner, Cornelia Katharina; Macht, Josef; Rosowski, Frank; Mueller-Engel, Klaus Joachim, Eggshell catalyst consisting of a hollow cylindrical support body and a catalytically active oxide material applied to the outer surface of the support body.
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