Catalytic method of purification of air for motor vehicle passenger compartment

Claim 1

A METHOD FOR REMOVING AIR-BORNE SULFUR COMPOUNDS FORM AIR ENTERING A MOTOR VEHICLE PASSENGER COMPARTMENT THROUGH A VENTILATION CONDUIT SYSTEM, SAID METHOD CONSISTING OF ESSENTIALLY OF THE STEPS OF IMPREGNATING A SELECTED QUANTITY OF ACTIVATED CHARCOAL WITH SELECTED COPPER COMPOUNDS IN AMOUNTS SUCH THAT SAID ACTIVATED CHARCOAL CONTAINS FROM ABOUT 0.5 PERCENT TO ABOUT 5 PERCENT BY WEIGHT AS FREE COPPER AND FROM ABOUT 0.25 PERCENT TO ABOUT 3 PERCENT BY WEIGHT AS FREE CHROMIUM IN PROPORTIONS SUCH THAT THE MOLAR RATIO OF COPPER TO CHROMIUM IS FROM ABOUT 1:1 TO ABOUT 8:1, MIXING THE IMPREGNATED CHARCOAL SO FORMED WITH AN EMULSION OF LIQUID SOLUBLE THERMAL SETTING BINDER CONSISTING ESSENTIALLY OF POLYVINYL ACETATE AND SOLVENT UNTIL THE MIXTURE BECOMES TACKY, PLACING SAID MIXTURE IN A MOLD OF SELECTED CONFIGURATION, PRESSING THE MIXTURE TO FORM A BRIQUETTE, AND HEATING THE BRIQUETTE AS FORMED TO SET THE BINDER TO FORM SAID IMPREGNATED CHARCOAL INTO A CATALYTICALLY ACTIVE FILTER ELEMENT, AND MOUNTING SAID FILTER ELEMENT IN THE VENTILATION CONDUIT OF SAID VEHICLE AND PASSING SAID AIR THROUGH THE FILTER ELEMENT AT AN HOURLY SPACE VELOCITY OF FROM ABOUT 5 TIMES 10 TO THE FORTH TO ABOUT 1.5 TIMES TEN TO THE SIXTH.

Claim 2

A METHOD FOR REMOVING AIR-BORNE SULFUR COMPOUNDS FORM AIR ENTERING A MOTOR VEHICLE PASSENGER COMPARTMENT THROUGH A VENTILATION CONDUIT SYSTEM, SAID METHOD CONSISTING OF ESSENTIALLY OF THE STEPS OF IMPREGNATING A SELECTED QUANTITY OF ACTIVATED CHARCOAL WITH SELECTED COPPER COMPOUNDS IN AMOUNTS SUCH THAT SAID ACTIVATED CHARCOAL CONTAINS FROM ABOUT 0.5 PERCENT TO ABOUT 5 PERCENT BY WEIGHT AS FREE COPPER AND FROM ABOUT 0.25 PERCENT TO ABOUT 3 PERCENT BY WEIGHT AS FREE CHROMIUM IN PROPORTIONS SUCH THAT THE MOLAR RATIO OF COPPER TO CHROMIUM IS FROM ABOUT 1:1 TO ABOUT 8:1, MIXING THE IMPREGNATED CHARCOAL SO FORMED WITH AN EMULSION OF LIQUID SOLUBLE THERMAL SETTING BINDER CONSISTING ESSENTIALLY OF POLYVINYL ACETATE AND SOLVENT UNTIL THE MIXTURE BECOMES TACKY, PLACING SAID MIXTURE IN A MOLD OF SELECTED CONFIGURATION, PRESSING THE MIXTURE TO FORM A BRIQUETTE, AND HEATING THE BRIQUETTE AS FORMED TO SET THE BINDER TO FORM SAID IMPREGNATED CHARCOAL INTO A CATALYTICALLY ACTIVE FILTER ELEMENT, AND MOUNTING SAID FILTER ELEMENT IN THE VENTILATION CONDUIT OF SAID VEHICLE AND PASSING SAID AIR THROUGH THE FILTER ELEMENT AT AN HOURLY SPACE VELOCITY OF FROM ABOUT 5 TIMES 10 TO THE FORTH TO ABOUT 1.5 TIMES TEN TO THE SIXTH.