Layered complex metal silicate compositions and their preparation

Abstract

Abstract A NEW AND IMPROVED PROCESS FOR THE PREPARATION OF LAYERED COMPLEX METAL SILICATE, ESPECIALLY CHRYSOTILES, AT LOW SEVERITY CONDITIONS. THESE CRYSTALLINE FORMS OF COMPLEX METAL SILICATE, OF SHAPE RANGING FROM THICK WALL TUBES THROUGH THIN WALL TUBES, AND THIN WALL TUBES THROUGH FLAKES, CAN BE PRODUCED, WITH HIGH SURFACE AREA, AS DESIRED, IN HYDRATED FORM, BY CONTACT OF SUITABLE SILICA AND METAL SOURCE IN A REACTION OR SYNTHESIS MIXTURE AT PH OF AT LEAST ABOUT 10, AND PREFERABLY FROM ABOUT 12 TO 14, AT MODERATE TEMPERATURES AND PRESSURES. THE PROCESS CAN PRODUCE CHRYSOTILES, SOME OF WHICH HAVE BEEN FOUND TO EXIST IN NATURE, OR HERETOFORE SNYTHETICALLY PRODUCED, BUT CAN AS WELL PRODUUCE CHRYSOTILE SPECIES WHICH DIFFER CHEMICALLY OR PHYSICALLY, OR BOTH, FROM PREVIOUSLY KNOWN SPECIES. NEW AND NOVEL FORMS OF CHRYSOTILE ARE IMPROVED IN MANY OF THEIR PHYSICAL AND CHEMICAL CHARACTERISTICS AS CONTRASTED WITH PREVIOUS SPECIES, AND ARE PARTICULARLY USEFUL DIRECTLY OR INDIRECTLY IN CONDUCTING HYDROCARBON CONVERSION REACTIONS.

Inventors

• 👤 H Robson

Bibliographic Details