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. 22, 2000
Filed:
Sep. 08, 1998
Council of Scientific & Industrial Research, New Delhi, IN;
Abstract
The present invention relates to a process for the synthesis of flyash based zeolite-Y (FAZ-Y), comprising grainding and mixing of flyash with caustic soda in a ratio ranging between 1:0.4-1:1.2 to obtain a fine homogenous fusion mixture, heating the said fusion mixture in an invert vessel at about 500-600.degree. C. for about 1-2 hours to obtain a fused mass, cooling, milling, and mixing of the said fused mass in distilled water for about 8-12 hours, subjecting the said slurry to hydrothermal crystallization at about 90-110.degree. C. for 8 to 12 hours to obtain FAZ-Y crystals, washing the said crystals with water and then subjecting the washed crystals to oven drying at 50-60.degree. C. to obtain the desired FAZ-Y crystals.