Hydrocarbon conversion process with a platinum containing catalyst

Claim 1

IN THE REFORMING OF A HYDROCARBON CHARGE STOCK BOILING APPROXIMATELY WITHIN THE GASOLINE RANGE AND HAVING AN APPRECIABLE NITROGEN COMPOUND CONTENT IN THE PRESENCE OF HYDROGEN AND A PLATINUM-CONTAINING CATALYST AT REFORMING CONDITIONS AT WHICH THE CHARGE STOCK EXHIBITS SUBSTANTIAL TENDENCY TO DEACTIVATE THE CATALYST, THE METHOD WHICH COMPRISES REFORMING SAID STOCK UNTIL THE CATALYST HAS LOST A MEASURABLE AMOUNT OF ACTIVITY, DISCONTINUING THE PROCESSING OF SAID CHARGE STOCK AND SUBSTITUTING THEREFOR A NORMALLY LIQUID HYDROCARBON CHARGE STOCK SUBSTANTIALLY FREE FROM NITROGEN COMPOUNDS AND WHICH EXHIBITS LESS TENDENCY TO DEACTIVATE THE FRESH CATALYST, REFORMING SAID LATTER STOCK UNTIL AT LEAST A PART OF THE LOST ACTIVITY HAS BEEN RESTORED, AND THEREAFTER DISCONTINUING THE REFORMING OF SAID LATTER STOCK AND REFORMING A CHARGE STOCK BOILING APPROXIMATELY WITHIN THE GASOLINE RANGE AND HAVING AN APPRECIABLE NITROGEN CONTENT IN THE PRESENCE OF HYDROGEN.