IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0524834
(1974-11-18)
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우선권정보 |
IT-0031750 (1973-11-28) |
발명자
/ 주소 |
- Ferlazzo Natale (Segrate (Milan) IT) Buzzi Gian Fausto (Arona (Novara) IT) Ghirga Marcello (Bresso (Milan) IT)
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출원인 / 주소 |
- Societa\Italiana Resine S.I.R. S.p.A. (Milan IT 03)
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인용정보 |
피인용 횟수 :
10 인용 특허 :
0 |
초록
▼
Acrylic acid is prepared by contacting an oxidation catalyst with a gaseous mixture containing acrolein, oxygen and methanol. A proportion by volume from 0.05 to 0.5% methanol and a molar ratio of acrolein to methanol from 10:1 to 100:1 are maintained in the said mixture the catalyst is defined by o
Acrylic acid is prepared by contacting an oxidation catalyst with a gaseous mixture containing acrolein, oxygen and methanol. A proportion by volume from 0.05 to 0.5% methanol and a molar ratio of acrolein to methanol from 10:1 to 100:1 are maintained in the said mixture the catalyst is defined by one of the general formulae: Moa Vb Mec Ox Moa Wd Mec Oy Moa Vb Wd Mec Oz WHEREIN Me is Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Cd, Au, Hg, Na, Ba, Ca, Ce, Bi, Th, U, Pb, Sn, Sb, P or B; and wherein a is a value from 6 to 12, b from 1 to 6, c from 0 to 5, d from 1 to 6, x from 20.5 to 58.5, y from 21 to 61.5 and z from 23.5 to 76.5. The reaction is carried out at a temperature not exceeding 320°C.
대표청구항
▼
A method of preparing acrylic acid comprising contacting with an oxidation catalyst at a temperature not exceeding 320°C a gaseous mixture comprising acrolein, oxygen and methanol in a proportion by volume from 0.05 to 0.5% of methanol and a molar ratio of acrolein to methanol from 10:1 to 100:1, an
A method of preparing acrylic acid comprising contacting with an oxidation catalyst at a temperature not exceeding 320°C a gaseous mixture comprising acrolein, oxygen and methanol in a proportion by volume from 0.05 to 0.5% of methanol and a molar ratio of acrolein to methanol from 10:1 to 100:1, and wherein the said catalyst is a calcined metal oxide catalyst chosen from the group of compounds defined by the following formulae: Moa Vb Mec Ox Moa Wd Mec Oy Moa Vb Wc Mec Oz wherein Me is an element chosen from the group consisting of chromium, manganese, iron, cobalt, nickel, copper, zinc, silver, cadmium, gold, mercury, sodium, barium, calcium, cerium, bismuth, thorium, uranium, lead, antimony, tin, phosphorus and boron; and wherein a, b, c, d, x, y, z are numbers varying, respectively: a from 6 to 12, b from 1 to 6, c from 0 to 5, d from 1 to 6, x from 20.5 to 58.5, y from 21 to 61.5 and z from 23.5 to 76.5.
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