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.
Abstract:
There is provided use of a thermal stabiliser for increasing the thermal stability of a cetane improver in a fuel composition comprising (i) a fuel, and (ii) the cetane improver wherein the thermal stabiliser is a compound of the formula H-R wherein H is a group comprising a heterocyclic group and R is a hydrocarbyl group having from 10 to 200 carbons.
Abstract:
A method of making cerium dioxide nanoparticles includes: a) providing an aqueous reaction mixture having a source of cerous ion, a source of hydroxide ion, a nanoparticle stabilizer, and an oxidant at an initial temperature no higher than about 20° C.; b) mechanically shearing the mixture and causing it to pass through a perforated screen, thereby forming a suspension of cerium hydroxide nanoparticles; and c) raising the initial temperature to achieve oxidation of cerous ion to eerie ion and thereby form cerium dioxide nanoparticles having a mean diameter in the range of about 1 nm to about 15 nm. The cerium dioxide nanoparticles may be formed in a continuous process.
Abstract:
A method of making cerium dioxide nanoparticles includes: a) providing an aqueous reaction mixture having a source of cerous ion, a source of hydroxide ion, a nanoparticle stabilizer, and an oxidant at an initial temperature no higher than about 20° C.; b) mechanically shearing the mixture and causing it to pass through a perforated screen, thereby forming a suspension of cerium hydroxide nanoparticles; and c) raising the initial temperature to achieve oxidation of cerous ion to eerie ion and thereby form cerium dioxide nanoparticles having a mean diameter in the range of about 1 nm to about 15 nm. The cerium dioxide nanoparticles may be formed in a continuous process.
Abstract:
A method of making cerium dioxide nanoparticles includes: a) providing an aqueous reaction mixture having a source of cerous ion, a source of hydroxide ion, a nanoparticle stabilizer, and an oxidant at an initial temperature no higher than about 20° C.; b) mechanically shearing the mixture and causing it to pass through a perforated screen, thereby forming a suspension of cerium hydroxide nanoparticles; and c) raising the initial temperature to achieve oxidation of cerous ion to eerie ion and thereby form cerium dioxide nanoparticles having a mean diameter in the range of about 1 nm to about 15 nm. The cerium dioxide nanoparticles may be formed in a continuous process.
Abstract:
Nano-sized metal and metal oxide particles used for improving combustion, reducing emission of harmful exhaust gas, and increasing catalytic chemical oxidation reaction of fuel are provided, a fuel composition and a fuel additive composition comprising the same are provided, a method for preparing the fuel composition is provided, and a fuel combustion improving method using the fuel composition and a method for increasing catalytic chemical oxidation reaction of the fuel composition are provided. A fuel composition comprises: liquid fuel; and about 0.01 ppm to about 500 ppm of nano-sized metal particles, nano-sized metal oxide particles, or a combination thereof, wherein about 90% by weight of the nano-sized metal particles, nano-sized metal oxide particles, or the combination thereof has a particle size of about 1 nm to about 990 nm and a surface area of about 50 m^2/g to about 1,000 m^2/g. The nano-sized metal particles, nano-sized metal oxide particles, or the combination thereof are selected from the group consisting of Group IIa metals, Group IIa metal oxides, Group IIIa metals, Group IIIa metal oxides, Group Iva metals, Group Iva metal oxides, Group VIII metals, Group VIII metal oxides, Group Ib metals, Group Ib metal oxides, Group IIb metals, Group IIb metal oxides, Group IIIb metals, and Group IIIb metal oxides.
Abstract:
The present invention relates to an additive concentrate useful for scavenging hydrogen sulphide and organic compounds comprising at least one sulfhydryl group, comprising an oxazolidine compound a particular additive chosen from (ethoxylated) phenol compounds. The invention also relates to a composition comprising said concentrate additive and a liquid solvent, as well as the use of the additive concentrate or of the composition of the invention for scavenging hydrogen sulphide and/or organic compounds comprising at least one sulfhydryl group in a liquid or gaseous stream.