| 发明名称 |
PROCESS FOR THE PRODUCTION OF PHTALIC ANHYDRIDE |
| 摘要 |
A two step process is described for the production of phtalic anhydride comprising in the first step the liquid phase oxidation of o-xylene in the presence of cobalt catalysts soluble in o-xilene and in the second step the oxidation of the orthotoluic acid thus formed and separated in vapor phase with vanadium catalysts. |
| 申请公布号 |
ZA8705622(B) |
申请公布日期 |
1988.02.08 |
| 申请号 |
ZA19870005622 |
申请日期 |
1987.07.30 |
| 申请人 |
SISAS-SOCIETA ITALIANA SERIE ACETICA SINTETICA S.P.A. |
发明人 |
FRANCESCO CELESTE;GIOVANNI RANGHINO |
| 分类号 |
C07D307/89;B01J31/00;C07B61/00;C07C51/265 |
主分类号 |
C07D307/89 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
