发明名称 |
Process to produce aromatics of low acid-wash color |
摘要 |
Nitration Grade benzene is made from a benzene stream with impurities including olefins by first fractionally distilling the benzene to a purity of at least 99 mole percent and subsequently passing the stream in a liquid phase in the presence of hydrogen through a hydrogenation step with a palladium catalyst under conditions such that substantially all olefins remaining in the stream are hydrogenated to paraffins.
|
申请公布号 |
US5004851(A) |
申请公布日期 |
1991.04.02 |
申请号 |
US19880275665 |
申请日期 |
1988.11.22 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
DURHAM, GEORGE R.;HEBERT, RANDY S. |
分类号 |
C07C7/00;C07C7/163 |
主分类号 |
C07C7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|