Silicone coated catalyst and use thereof

Claim 1

A PROCESS FOR THE CATALYTIC CONVERSION OF A MINERAL OIL DISTILLATE, WHICH COMPRISES SUBJECTING SAID DISTILLATE TO A TEMPERATURE BETWEEN ABOUT 600* F. AND 1200* F. IN THE PRESENCE OF HYDROGEN AND A PARTICLE-FORM ADSORBENT CATALYTIC CONTACTING MATERIAL STABLE AT TEMPERATURES IN EXCESS OF 500* F., COMPRISING (1) A MAJOR PROPORTION OF ACTIVATED OXIDE SELECTED FROM THE GROUP CONSISTING OF SILICA-GEL, ACTIVATED ALUMINA AND MIXTURES THEREOF, (2) A MINOR PROPORTION, BETWEEN ABOUT 5% AND 25% BY WEIGHT, OF A CATALYTIC AGENT SELECTED FROM THE CLASS CONSISTING OF THE OXIDES AND SULFIDES OF TRANSITIONAL METALS HAVING AN ATOMIC NUMBER BETWEEN 22 AND 42, AND (3) AN INTIMATELY BONDED COATING OF A METHYL SILICONE, SAID METHYL SILICONE COATING HAVING BEEN FORMED IN SITU BY ADSORBING ONTO THE ACTIVE SURFACE OF SAID ACTIVATED OXIDE A MONOMERIC METHYL SILANE CONTAINING AT LEAST ONE HYDROLYZABLE GROUP BONDED TO THE SILICON ATOM, AND HYDROLYZING THE ADSORBED METHYL SILANE TO FORM A ADSORBENT SUBSTRATE CONTAINING INTIMATELY BONDED METHYL SILICONE IN AMOUNTS CORRESPONDING TO BETWEEN ABOUT 0.001% AND 5% BY WEIGH OF SILICON, RELATIVE TO THE FINAL CATALYST COMPOSITION.