Solid catalysts containing silicium phosphate their manufacture and use
Abstract
Abstract FOR ALKYLATING OR ISOMERIZING MONO- OR POLYOLEFINS, E.G. PRODUCTION OF ISOOCTENE FROM BUTENE, THERE ARE PROVIDED NOVEL CATALYST CONSISTING ESSENTIALLY OF A SILICA CARRIER IMPREGNATED WITH PHOSPHORIC ACID, THE MOLAR RATIO OF P2/5 TO SIO2 BEING RELATIVELY LOW, BETWEEN 0.6 AND 0.95, AND THE CONTENT OF THE CRYSTALLINE C FORM OF SILICON PHOSPHATE BEING RELATIVELY HIGH, 75-95%. THESE CATALYST WHICH ARE BOTH HIGHLY ACTIVE AND SELECTIVE ARE PREPARED BY HEATING A MIXTURE OF SLICA IMPREGNATED WITH PHOSPHORIC ACID TO 550-1000*C., AND THEN CONTACTING THE RESULTANT HEATED MIXTURE WITH STEAM AT 100-300*C. FOR THE BEST MECHANICAL PROPERTIES OF THE CATALYST, THE SILICA CARRIER SHOULD HAVE AN SIO2 CONTENT OF 96-99% BY WEIGHT.
Inventors
- 👤 Bernard Juguin
- 👤 Jean Francois Le Page
Bibliographic Details
Claims Analysis
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