| 摘要 |
<p>1532295 Modified inorganic solids BRITISH PETROLEUM CO Ltd 27 July 1977 [29 July 1976] 31636/76 Heading CIA A product which can be used to extract certain metals from organic solutions is obtained by reacting firstly with either an inorganic solid compound containing surface hydroxyl groups or with an aromatic aldehyde compound and then the other of the two groups of compounds. Exemplified solids are alumina, titania, zirconia, glass, sepiolite or zeolites and particularly exemplified is silica.</p> |
