Fuel Additive and Catalyst Treatment Process

Abstract

Described are a gasoline fuel additive which meets the needs of the art with regard to the problems associated with inactivation of catalytic converters. The fuel additive will comprise platinum, preferably as platinum COD and cerium, preferably in a form dispersible or soluble in gasoline, e.g., cerium octoate, cerium oleate and/or cerium stearate. Dosage rates for the gasoline will provide from about 0.05 to about 2.0 ppm platinum and from about 1 to about 100 ppm cerium. Ratios of the platinum to cerium are preferably within the range of from 1:5 to 1:100.

1 . A composition comprising gasoline and a fuel additive comprising a platinum group metal compostion, and a cerium composition which contains from about 0.05 to about 2.0 ppm platinum and from about 1 to about 100 ppm cerium.  
   
   
       2 . A composition according to  claim 1  wherein the ratio of the platinum to cerium is within the range of from 1:5 to 1:100.  
   
   
       3 . A composition according to  claim 1  wherein the platinum composition comprises a member selected from the group consisting of 1,5-cyclooctadiene platinum diphenyl, platinum group metal acetylacetonate, platinum group metal dibenzylidene acetonates, and fatty acid soaps of tetramine platinum metal complexes.  
   
   
       4 . A composition according to  claim 1  wherein the platinum composition comprises a member selected from the group consisting of 1,5-cyclooctadiene platinum diphenyl and the cerium composition comprises cerium octoate, cerium oleate and/or cerium stearate.  
   
   
       5 . A composition according to  claim 1  wherein the ratio of the platinum to cerium is within the range of from 1:5 to 1:100 and the platinum composition comprises a member selected from the group consisting of 1,5-cyclooctadiene platinum diphenyl and the cerium composition comprises cerium octoate, cerium oleate and/or cerium stearate.  
   
   
       6 . A composition according to  claim 1  wherein the gasoline comprises from 1 to 25% ethanol.  
   
   
       7 . A process for rejuvenating a catalytic converter, comprising adding to gasoline an additive comprising a platinum group metal compostion, and a cerium composition which contains from about 0.05 to about 2.0 ppm platinum and from about 1 to about 100 ppm cerium.  
   
   
       8 . A process according to  claim 7  wherein the ratio of the platinum to cerium is within the range of from 1:5 to 1:100.  
   
   
       9 . A process according to  claim 7  wherein the platinum composition comprises a member selected from the group consisting of 1,5-cyclooctadiene platinum diphenyl, platinum group metal acetylacetonate, platinum group metal dibenzylidene acetonates, and fatty acid soaps of tetramine platinum metal complexes.  
   
   
       10 . A process according to  claim 7  wherein the platinum composition comprises a member selected from the group consisting of 1,5-cyclooctadiene platinum diphenyl and the cerium composition comprises cerium octoate, cerium oleate and/or cerium stearate.  
   
   
       11 . A process according to  claim 7  wherein the ratio of the platinum to cerium is within the range of from 1:5 to 1:100 and the platinum composition comprises a member selected from the group consisting of 1,5-cyclooctadiene platinum diphenyl and the cerium composition comprises cerium octoate, cerium oleate and/or cerium stearate.  
   
   
       12 . A process according to  claim 7  wherein the gasoline comprises from 1 to 25% ethanol.  
   
   
       13 . A fuel additive comprising a platinum group metal compostion, and a cerium composition which contains from about 0.05 to about 2.0 ppm platinum and from about 1 to about 100 ppm cerium.  
   
   
       14 . A fuel additive according to  claim 13  wherein the ratio of the platinum to cerium is within the range of from 1:5 to 1:100.  
   
   
       15 . A fuel additive according to  claim 13  wherein the platinum composition comprises a member selected from the group consisting of 1,5-cyclooctadiene platinum diphenyl, platinum group metal acetylacetonate, platinum group metal dibenzylidene acetonates, and fatty acid soaps of tetramine platinum metal complexes.  
   
   
       16 . A fuel additive according to  claim 13  wherein the platinum composition comprises a member selected from the group consisting of 1,5-cyclooctadiene platinum diphenyl and the cerium composition comprises cerium octoate, cerium oleate and/or cerium stearate.  
   
   
       17 . A fuel additive according to  claim 13  wherein the ratio of the platinum to cerium is within the range of from 1:5 to 1:100 and the platinum composition comprises a member selected from the group consisting of 1,5-cyclooctadiene platinum diphenyl and the cerium composition comprises cerium octoate, cerium oleate and/or cerium stearate.