Abstract Organometallic compounds are separated from liquid hydrocarbons containing the same by contacting the liquid hydrocarbon with an activated charcoal having hydrous ferric chloride impregnated thereon. The contacting may be accomplished at any combination of temperature and pressure at which the hydrocarbon will remain liquid and at which all components used in the process will remain stable. The contacting may be accomplished in essentially any suitable fashion; however, contacting in a fixed bed of the activated charcoal is, generally, most convenient and effective. Impregnation of the activated charcoal is accomplished by contacting a suitable activated charcoal with an aqueous solution of hydrous ferric chloride and thereafter at least partially drying the resulting mixture such that the water remaining is internally adsorbed in the activated charcoal pores. Generally, the presence of water in the impregnated activated carbon adsorbent will improve separation performance. This method of separation is particularly suited to the separation of organo lead compounds from gasoline.
A METHOD FOR SEPARATING AN ORGANO LEAD COMPOUND FROM LIQUID HYDROCARBON COMPRISING THE STEPS OF: A. CONTACTING A LIQUID HYCDROCATBON HAVING AN ORGANO LEAD COMPOUND DISSOLVED THEREIN WITH AN ACTIVATED CARBON IMPREGNATED WITH A HYDROUS FERRIC CHROLIDE, SAID ACTIVATED CARBON IMPREGNATED WITH A HYDROUS CHLORIDE COMPRISING BETWEEN ABOUT 5 AND ABOUT 20 WT. % FECI3 ON A WATER-FREE BASIS, BETWEEN ABOUT 2 AND ABOUT 30 WT.% WATER AND BETWEEN ABOUT 50 AND ABOUT 93 WT. % ACTIVATED CARBON, AND B. RECOVERING A LIQUID HYDROCARBON HAVING A REDUCED DISSOLNED LEAD CONTENT THEREIN.
Claim 2
Independent Claim
91 words
A METHOD FOR SEPARATING AN ORGANO LEAD COMPOUND FROM LIQUID HYDROCARBON COMPRISING THE STEPS OF: A. CONTACTING A LIQUID HYCDROCATBON HAVING AN ORGANO LEAD COMPOUND DISSOLVED THEREIN WITH AN ACTIVATED CARBON IMPREGNATED WITH A HYDROUS FERRIC CHROLIDE, SAID ACTIVATED CARBON IMPREGNATED WITH A HYDROUS CHLORIDE COMPRISING BETWEEN ABOUT 5 AND ABOUT 20 WT. % FECI3 ON A WATER-FREE BASIS, BETWEEN ABOUT 2 AND ABOUT 30 WT.% WATER AND BETWEEN ABOUT 50 AND ABOUT 93 WT. % ACTIVATED CARBON, AND B. RECOVERING A LIQUID HYDROCARBON HAVING A REDUCED DISSOLNED LEAD CONTENT THEREIN.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein said activated carbon is impregnated with an aqueous solution of hydrous ferric chloride.
Claim 4
Dependent Claim
28 words
The method of claim 1 wherein the activated carbon is substantially amorphous and has an oxygen content within the range of about 3 to about 25 wt. %.
Claim 5
Dependent Claim
51 words
The method of claim 1 wherein the activated carbon impregnated with an aqueous solution of ferric chloride comprises between about 8 and about 15 wt. % FeCl3, on a water-free basis, between about 5 and about 20 wt. % water and between about 65 and about 87 wt. % activated carbon.
Claim 6
Dependent Claim
64 words
The method of claim 4 wherein said activated carbon contains less than about 5.0 wt. % graphitic type carbon; has an oxygen content within the range of about 10 to about 20 wt. %; has a total pore volume within the range of about 0.8 to about 1.2 ml/g; and exhibits a surface area within the range of about 500 to about 1000 m2/g.
Claim 7
Dependent Claim
19 words
The method of claim 1 wherein the contacting is accomplished at a temperature between about 30* and about 120*F.
Claim 8
Dependent Claim
22 words
The method of claim 6 wherein the contacting is continued for a period of time between about 1 and about 5 minutes.
Claim 9
Dependent Claim
16 words
The method of claim 7 wherein the liquid hydrocarbon contains less than about 0.5 g Pb/gallon.