IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0479724
(1974-06-17)
|
발명자
/ 주소 |
- Dolhyj Serge R. (Parma OH) Milberger Ernest C. (Solon OH)
|
출원인 / 주소 |
- The Standard Oil Company (Ohio) (Cleveland OH 02)
|
인용정보 |
피인용 횟수 :
33 인용 특허 :
0 |
초록
▼
Coated catalysts having an inert support material with an outer surface and a coating of active catalyst containing tungsten, vanadium and molybdenum plus optionally one or more of Fe, Mn, Cu, Sn, Sb, Cr, Ce, U, Co, Ni, Zn, Mg or mixture thereof have been found to be especially effective catalysts f
Coated catalysts having an inert support material with an outer surface and a coating of active catalyst containing tungsten, vanadium and molybdenum plus optionally one or more of Fe, Mn, Cu, Sn, Sb, Cr, Ce, U, Co, Ni, Zn, Mg or mixture thereof have been found to be especially effective catalysts for the production of unsaturated acids from the corresponding unsaturated aldehydes, for example, acrolein is oxidized to acrylic acid using these catalysts. The catalysts give a very low exotherm, very high single pass yields of the desired acid and reduce the undesirable by-products.
대표청구항
▼
In the process for the preparation of acrylic acid or methacrylic acid by the oxidation of acrolein or methacrolein in the presence of an oxide or oxide complex active catalyst of the formula Aa Wb Vc Mod Ox wherein A is Fe, Mn, Cu, Sn, Sb, Cr, Ce, U, Co, Ni, Zn, Mg or mixture thereof; and wherein a
In the process for the preparation of acrylic acid or methacrylic acid by the oxidation of acrolein or methacrolein in the presence of an oxide or oxide complex active catalyst of the formula Aa Wb Vc Mod Ox wherein A is Fe, Mn, Cu, Sn, Sb, Cr, Ce, U, Co, Ni, Zn, Mg or mixture thereof; and wherein a is 0-12; b is about 0.1 to about 16; c is about 0.5 to about 12; d is about 8 to about 16; x is the number of oxygens required to satisfy the valence requirements of the other elements present, at an elevated temperature of about 200°to about 500°C., the improvement comprising using a coated catalyst consisting essentially of an inert support material having a diameter of at least 20 microns and an outer surface and a continuous coating of said active catalyst on said inert support strongly adhering to the outer surface of said support, said coated catalyst being prepared by partially wetting the support with water and rolling the partially wet support in a powder of the active catalyst.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.