| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0453698
(1999-12-03)
|
| 우선권정보 |
JP0355496 (1997-12-24) |
|
발명자
/ 주소 |
- Hinago Hidenori,JPX
- Komada Satoru,JPX
|
| 출원인 / 주소 |
- Asahi Kasei Kogyo Kabushiki Kaisha, JPX
|
| 대리인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
21 인용 특허 :
0 |
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.] A process for producing acrylonitrile or methacrylonitrile, which comprises reacting propane or isobutane with ammonia and molecular oxygen in the gaseous phase in the presence of a catalyst, which comprises:a compound oxide represented by the following formula (1):EQU Mo
[ What is claimed is:] [1.] A process for producing acrylonitrile or methacrylonitrile, which comprises reacting propane or isobutane with ammonia and molecular oxygen in the gaseous phase in the presence of a catalyst, which comprises: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; andn 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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