发明名称 |
PREPARATION OF PHTHALIC ANHYDRIDE |
摘要 |
THE INVENTION RELATES TO A PROCESS FOR PREPARING PHTHALIC ANHYDRIDE, IN WHICH THE CATALYTIC GAS-PHASE OXIDATION OF O-XYLENE AND/OR NAPHTHALENE IS CARRIED OUT OVER AT LEAST THREE ZONES OF CATALYSTS OF INCREASING ACTIVITY, WITH ONLY THE LAST ZONE OF THE CATALYST SYSTEM CONTAINING PHOSPHORUS AND THE LAST ZONE ALSO COMPRISING AT LEAST 10% BY WEIGHT OF VANADIUM (CALCULATED AS V₂ O5) BASED ON THE ACTIVE COMPOSITION OF THE CATALYST AND HAVING A RATIO OF VANADIUM (CALCULATED AS V₂O5) TO PHOSPHORUS OF GREATER THAN 35.
|
申请公布号 |
MY137916(A) |
申请公布日期 |
2009.03.31 |
申请号 |
MYPI20041556 |
申请日期 |
2004.04.28 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
DR. SAMUEL NETO;DR. J0XDCRGEN Z0XDCHLKE;DR. SEBASTIAN STORCK;DR. FRANK ROSOWSKI |
分类号 |
C07C51/265;C07C51/31;C07D307/89 |
主分类号 |
C07C51/265 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|