公开(公告)号：US3694152A

公开(公告)日：1972-09-26

申请号：US3694152D

申请日：1969-10-13

Applicant: SNAM PROGETTI

Inventor： SERSALE RICCARDO ,  FRANCO ENRICO ,  AJELLO ROSARIO ,  COLELLA CARMINE

IPC: B01J29/08 ,  C01B33/00 ,  C01B33/26 ,  C01B39/02 ,  C01B39/20 ,  C01B33/28

CPC classification number: C01B33/2815 ,  Y10S423/21

Abstract: SYNTHETIC CRYSTALLINE ZEOLITES ARE PREAPRED BY TREATING NATURAL GLASSES, SUCH AS LIPARI PUMICE, AND SYNTHETIC GLASSES PREPARED BY MELTING A SUITABLE MIXTURE OF OXIDES OR SILICOALUMINATES WITH AN ALKALINE SOLUTION AT A TEMPERATURE WITHIN THE RANGE OF 50*C. TO 150*C. UNTIL THE CRYSTALLINE ZEOLITE FORMS. FAUJASITE IS PREPARED BY TREATING EACH OF PULVERIZED PUMICE AND A SYNTHETIC GLASS HAVING THE COMPOSITION 3NA2O.AL2O3.4SIO2 WITH A SODIUM HYDROXIDE SOLUTION AT AN ELEVATED TEMPERATURE.