Abstract 1. IN A PROCESS FOR PREPARING A CATALYST FOR THE DEHYDROGENATION OF ALKYL AROMATIC HYDROCARBONS TO VINYL AROMATIC HYDROCARBONS BY PREPARING A PASTE CONSISTING ESSENTIALLY OF FE2O3, CR2O3 OR AN ALKALI METAL CHROMATE OR DICHROMATE DECOMPOSIBLE TO CR2O3, AN ALKALI METAL OXIDE OR AN ALKALI METAL SALT DECOMPOSIBLE TO AN ALKALI METAL OXIDE, A BINDER AND SUFFICIENT WATER TO FORM SAID PASTE, FORMING SAID PASTE INTO PELLETS AND CALCINING SAID PELLETS INTO A FINISHED CATALYST, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS THE FE2O3 COMPONENT A MIXTURE OF HYDRATED FE2O3 AND ANHYDROUS FE2O3 WHEREIN THE HYDRATED FE2O3 IS PRESENT IN THE RANGE OF FROM ABOUT 79 PERCENT TO ABOUT 95 PERCENT OF THE TOTAL WEIGHT OF IRON OXIDES PRESENT.
IN A PROCESS FOR PREPARING A CATALYST FOR THE DEHYDROGENATION OF ALKYL AROMATIC HYDROCARBONS TO VINYL AROMATIC HYDROCARBONS BY PREPARING A PASTE CONSISTING ESSENTIALLY OF FE2O3, CR2O3 OR AN ALKALI METAL CHROMATE OR DICHROMATE DECOMPOSIBLE TO CR2O3, AN ALKALI METAL OXIDE OR AN ALKALI METAL SALT DECOMPOSIBLE TO AN ALKALI METAL OXIDE, A BINDER AND SUFFICIENT WATER TO FORM SAID PASTE, FORMING SAID PASTE INTO PELLETS AND CALCINING SAID PELLETS INTO A FINISHED CATALYST, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS THE FE2O3 COMPONENT A MIXTURE OF HYDRATED FE2O3 AND ANHYDROUS FE2O3 WHEREIN THE HYDRATED FE2O3 IS PRESENT IN THE RANGE OF FROM ABOUT 79 PERCENT TO ABOUT 95 PERCENT OF THE TOTAL WEIGHT OF IRON OXIDES PRESENT.
Claim 2
Dependent Claim
117 words
IN A PROCESS FOR PREPARING A CATALYST FOR THE DEHYDROGENATION OF ALKYL AROMATIC HYDROCARBONS TO VINYL AROMATIC HYDROCARBONS BY PREPARING A PASTE CONSISTING ESSENTIALLY OF FE2O3, CR2O3 OR AN ALKALI METAL CHROMATE OR DICHROMATE DECOMPOSIBLE TO CR2O3, AN ALKALI METAL OXIDE OR AN ALKALI METAL SALT DECOMPOSIBLE TO AN ALKALI METAL OXIDE, A BINDER AND SUFFICIENT WATER TO FORM SAID PASTE, FORMING SAID PASTE INTO PELLETS AND CALCINING SAID PELLETS INTO A FINISHED CATALYST, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS THE FE2O3 COMPONENT A MIXTURE OF HYDRATED FE2O3 AND ANHYDROUS FE2O3 WHEREIN THE HYDRATED FE2O3 IS PRESENT IN THE RANGE OF FROM ABOUT 79 PERCENT TO ABOUT 95 PERCENT OF THE TOTAL WEIGHT OF IRON OXIDES PRESENT.