US PATENT SUBCLASS 585 / 463
.~.~.~ Alumina containing

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

400  DF  AROMATIC COMPOUND SYNTHESIS {15}
446  DF  .~ By condensation of entire molecules or entire hydrocarbyl moieties thereof, e.g., alkylation, etc. {13}
462  DF  .~.~ Using halogen-containing catalyst {3}
463.~.~.~ Alumina containing

DEFINITION

Classification: 585/463

Alumina containing:

(under subclass 462) Subject matter wherein the catalyst also contains aluminum oxide.

(1) Note. The halogen may be added to alumina during the catalyst preparation before calcination, that is, before the alumina is formed; the halogen may also be added to alumina after calcination, or to an alumina-containing catalyst, e.g., a zeolite, during its fabrication; to a final catalyst composite, or in a subsequent activation treatment to enhance the properties of the catalyst in the process.