Process for making cerium dioxide nanoparticles
First Claim
1. A process of making nanoparticles, comprising:
- (a) forming an aqueous reaction mixture comprising cerous ion, hydroxide ion, an α
-hydroxy carboxylic acid, and an oxidant; and
(b) heating the reaction mixture to a temperature in the range of about 20°
C. to about 100°
C., thereby forming a product dispersion of cerium dioxide nanoparticles.
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Accused Products
Abstract
A method of improving the efficiency of a diesel engine provided with a source of diesel fuel includes the steps of: a) adding to the diesel fuel a reverse-micellar composition having an aqueous first disperse phase that includes a free radical initiator and a first continuous phase that includes a first hydrocarbon liquid, a first surfactant, and optionally a co-surfactant, thereby producing a modified diesel fuel, and b) operating the engine, thereby combusting the modified diesel fuel. The efficiency of a diesel engine provided with a source of diesel fuel and a source of lubricating oil can also be improved by modifying the lubricating oil by the addition of a stabilized nanoparticulate composition of cerium dioxide. The efficiency of a diesel engine can also be improved by adding to the diesel fuel a reverse-micellar composition that includes an aqueous disperse phase containing boric acid or a borate salt.
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Citations
9 Claims
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1. A process of making nanoparticles, comprising:
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(a) forming an aqueous reaction mixture comprising cerous ion, hydroxide ion, an α
-hydroxy carboxylic acid, and an oxidant; and(b) heating the reaction mixture to a temperature in the range of about 20°
C. to about 100°
C., thereby forming a product dispersion of cerium dioxide nanoparticles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification