[미국특허]
Ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-023/00
B01J-023/40
B01J-023/58
B01J-023/02
C07C-025/300
출원번호
US-0129414
(1998-08-05)
우선권정보
JP-0355496 (1997-12-24)
발명자
/ 주소
Hinago Hidenori,JPX
Komada Satoru,JPX
출원인 / 주소
Asahi Kasei Kogyo Kabushiki Kaisha, JPX
대리인 / 주소
Pennie & Edmonds LLP
인용정보
피인용 횟수 :
42인용 특허 :
10
초록▼
By the use of the ammoxidation catalyst of the present invention, not only can acrylonitrile or methacrylonitrile be produced in high yield, but also oxidative decomposition of ammonia feedstock into nitrogen can be effectively suppressed, thereby enabling an improved utilization of ammonia as a fee
By the use of the ammoxidation catalyst of the present invention, not only can acrylonitrile or methacrylonitrile be produced in high yield, but also oxidative decomposition of ammonia feedstock into nitrogen can be effectively suppressed, thereby enabling an improved utilization of ammonia as a feedstock.
대표청구항▼
[ What is claimed is:] [1.] An ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation in the gaseous phase, comprising a compound oxide represented by the following formula (1):EQU Mo.sub.1.0 V.sub.p X.sub.q Nb.sub.r Z.sub.s O.sub.n (
[ What is claimed is:] [1.] An ammoxidation catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation in the gaseous phase, comprising a compound oxide represented by the following formula (1):EQU Mo.sub.1.0 V.sub.p X.sub.q Nb.sub.r Z.sub.s O.sub.n ( 1) rein:X is at least one element selected from the group consisting of tellurium and antimony;Z is at least one element selected from the group consisting of tantalum, tungsten, chromium, titanium, zirconium, bismuth, tin, hafnium, manganese, rhenium, iron, ruthenium, cobalt, rhodium, nickel, palladium, platinum, silver, zinc, boron, aluminum, gallium, indium, germanium, lead, phosphorus, rare earth elements and alkaline earth metals, and p, q, r, s and n are, respectively, the atomic ratios of vanadium, X, niobium, Z and oxygen, relative to molybdenum, reinEQU 0.1.ltoreq.p.ltoreq.0.6;EQU 0.01.ltoreq.q.ltoreq.0.6;EQU 0.01.ltoreq.r.ltoreq.0.6;EQU 0.ltoreq.s.ltoreq.1;n is a number determined by the valence requirements of the other elements present,said compound oxide exhibiting an X-ray diffraction pattern satisfying the following relationship (2):EQU 0.40.ltoreq.R.ltoreq.0.75 (2)wherein R represents the intensity ratio defined by the following formula (3):EQU R=P.sub.1 /(P.sub.1 +P.sub.2) (3)wherein P.sub.1 and P.sub.2 represent the intensities of peak 1 and peak 2 appearing at diffraction angles (2.theta.) of 27.3.+-.0.3.degree. and 28.2.+-.0.3.degree., respectively.
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