Liquid fuel composition and method for enhancing combustion efficiency of a liquid fuel

Abstract

A liquid fuel composition includes: a liquid fuel; and a sublimatable organic compound that has a sublimation point lower than 45° C. at atmospheric pressure, and that includes a skeleton selected from bicycloheptane, indane, pyrone, cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, and benzene.

1 . A liquid fuel composition, comprising:
 a liquid fuel, and   a sublimatable organic compound that has a sublimation point lower than 45° C. at atmospheric pressure, and that includes a skeleton selected from the group consisting of bicycloheptane, indane, pyrone, cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, and benzene.   
     
     
         2 . The liquid fuel composition of  claim 1 , wherein said sublimatable organic compound is selected from the group consisting of menthol, borneol, camphene, tert-butylcyclohexanol, maltol (3-hydroxy-2-methyl-4-pyrone), 5-acetyl-1,1,2,3,3,6-hexamethylindane (phantolide), 4-acetyl-6-tert-butyl-1,1-dimethylindane (celestolide), 1,1,4,4-tetramethyl-6-ethyl-7-acetyl-1,2,3,4-tetrahy dronaphthalene(versalide), 2-isopropyl-2,5-dihydroxy-5-methylcyclohexanone, 1-methyl-1-hydroxy-4-(1-methyl-1-hydroxyethyl)cycloh exane, 2-methyl-3,5-dihydroxy-5-(1-methylvinyl)-2-cyclohexa none, 3-methyl-3-hydroxy-6-isopropylcyclohexanone, 5 - hydroxy-5-methyl-2-(1-methylethylidene)cyclohexane, 2-hydroxy-2,6,6-trimethylbicyclo[3.1.1]-2-heptane, 2-(4-hydroxy-4-methyl-1-cyclohexyl)isopropanol, 1-hydroxy-1-methyl-4-(1-methylethylidene)cyclohexane, 1-methyl-2,5-diisobutyl-4-cumene, 1-hydroxy-2-isobutylcyclohexane, 1-hydroxy-1-isobutylcyclohexane, 1,4-dihydroxy-3,6-diisobutylcyclohexane, 1-hydroxy-3,6-diisobutylcyclohexane, 1-hydroxy-4-isobutylcyclohexane, 4,7,7-trimethylbicyclo[2.2.1]heptanone, 4,7,7-trimethylbicyclo[2.2.1]heptanol, 1-hydroxl-3-isopropyl-6-methylcyclohexane, 2-isobutyl-3-isopropylcyclopropanone, 2-isobutyl-3-isopropylcyclopropanol, 2-isobutyl-4-ethylcyclobutanone, 2-isobutyl-4-ethylcyclobutanol, 2-isobutyl-4-methylcyclopentanone, 2-isobutyl-4-methylcyclopentanol, 2-isobutylcyclohexanone, 2-isobutylcyclohexanol, 4-isopropylcycloheptanone, 4-isopropylcycloheptanol, 3,7-dimethylcyclooctanone, 3,7-dimethylcyclooctanol, and combinations thereof. 
     
     
         3 . The liquid fuel composition of  claim 1 , wherein said sublimatable organic compound is present in an amount of 0.1-500 grams based on 10 L of said liquid fuel. 
     
     
         4 . The liquid fuel composition of  claim 1 , wherein said liquid fuel is selected from the group consisting of gasoline, diesel, alcohol, biomass fuel, organic hydrogenated fuel oil, and combinations thereof. 
     
     
         5 . A method for enhancing combustion efficiency of a liquid fuel, comprising:
 adding a sublimatable organic compound in a liquid fuel,   wherein the sublimatable organic compound has a sublimation point lower than 45° C. at atmospheric pressure and includes a skeleton selected from the group consisting of bicycloheptane, indane, pyrone, cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, and benzene.   
     
     
         6 . The method of  claim 5 , wherein the sublimatable organic compound is selected from the group consisting of menthol, borneol, camphene, tert-butylcyclohexanol, maltol(3-hydroxy-2-methyl-4-pyrone), 5-acetyl-1,1,2,3,3,6-hexamethylindane(phantolide), 4-acetyl-6-tert-butyl-1,1-dimethylindane(celestolide), 1,1,4,4-tetramethyl-6-ethyl-7-acetyl-1,2,3,4-tetrahy dronaphthalene(versalide), 2-isopropyl-2,5-dihydroxy-5-methylcyclohexanone, 1-methyl-1-hydroxy-4-(1-methyl-1-hydroxyethyl)cycloh exane, 2-methyl-3,5-dihydroxy-5-(1-methylvinyl)-2-cyclohexa none, 3-methyl-3-hydroxy-6-isopropylcyclohexanone, 5-hydroxy-5-methyl-2-(1-methylethylidene)cyclohexane, 2-hydroxy - 2,6,6-trimethylbicyclo[3.1.1]-2-heptane, 2-(4-hydroxy-4-methyl-1-cyclohexyl)isopropanol, 1-hydroxy-1-methyl-4-(1-methylethylidene)cyclohexane, 1-methyl-2,5-diisobutyl-4-cumene, 1-hydroxy-2-isobutylcyclohexane, 1-hydroxy-1-isobutylcyclohexane, 1,4-dihydroxy-3,6-diisobutylcyclohexane, 1-hydroxy-3,6-diisobutylcyclohexane, 1-hydroxy-4-isobutylcyclohexane, 4,7,7-trimethylbicyclo[2.2.1]heptanone, 4,7,7-trimethylbicyclo[2.2.1]heptanol, 1-hydroxl-3-isopropyl-6-methylcyclohexane, 2-isobutyl-3-isopropylcyclopropanone, 2-isobutyl-3-isopropylcyclopropanol, 2-isobutyl-4-ethylcyclobutanone, 2-isobutyl-4-ethylcyclobutanol, 2-isobutyl-4-methylcyclopentanone, 2-isobutyl-4-methylcyclopentanol, 2-isobutylcyclohexanone, 2-isobutylcyclohexanol, 4-isopropylcycloheptanone, 4-isopropylcycloheptanol, 3,7-dimethylcyclooctanone, 3,7-dimethylcyclooctanol, and combinations thereof. 
     
     
         7 . The method of  claim 5 , wherein the sublimatable organic compound is present in an amount of 0.1-500 grams based on 10 L of the liquid fuel. 
     
     
         8 . The method of  claim 5 , wherein the liquid fuel is selected from the group consisting of gasoline, diesel, alcohol, biomass fuel, organic hydrogenated fuel oil, and combinations thereof.