The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2005
Filed:
Nov. 26, 2003
Alex Cheru Pulikottil, Haryana, IN;
Manoranjan Santra, Haryana, IN;
Hillol Biswas, Haryana, IN;
Mani Karthikeyan, Haryana, IN;
Dharmendra Kumar Yadav, Haryana, IN;
Ram Prakash Verma, Haryana, IN;
Alex Cheru Pulikottil, Haryana, IN;
Manoranjan Santra, Haryana, IN;
Hillol Biswas, Haryana, IN;
Mani Karthikeyan, Haryana, IN;
Dharmendra Kumar Yadav, Haryana, IN;
Ram Prakash Verma, Haryana, IN;
Indian Oil Corporation Limited, Mumbai, IN;
Abstract
A process for the preparation of hydrotreating catalyst which comprises of a Group VIB metal and Group VIII metal on an active composite carrier for the removal of sulfur from gas oil feed stocks, wherein the said carrier comprises of a phosphated alumina and an ultra stable Y zeolite and the metal components mostly reside on the alumina, said process comprising the steps of impregnation of chelated metal complex preferentially on to the alumina component of the composite support and subjecting the composite catalyst to a high-speed ball milling. The catalyst obtained by the process of the present invention consists of the active metals in the nanoparticle range (less than 50 Å) while also retaining the zeolite properties of the composite carrier and the catalyst produces less than 50 ppm sulfur from gas oil feed stocks containing greater than 1 wt % sulfur under typical commercial operating conditions.