# US 2014/0150333 A1 · Fuel compositions

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- Number: US 2014/0150333 A1
- Document ID: US20140150333A1
- Status: Published application
- Kind: A1
- Application number: 14/086,371
- Filed: 2013-11-21
- Published: 2014-06-05
- Earliest claimed: 2012-11-30
- Assignees: Shell Oil Company
- Applicants: Shell Oil Company
- Inventors: Mark Lawrence BREWER; Roger Grancis CRACKNELL; Matthias EGGENSTEIN; Tor Kit GOH
- Web page: https://patentgrep.com/patent/US20140150333A1

## CPC

- C10L 1/1811: {peroxides; ozonides}
- C10L 1/14: Organic compounds
- C10L 10/00: Use of additives to fuels or fires for particular purposes (additives for liquid carbonaceous fuels characterised by their chemical nature C10L1/10; using binders for briquetting solid fuels C10L5/10; using additives to improve the combustion of solid fuels C10L9/10)
- C10L 10/12: for improving the cetane number
- C10L 1/23: containing at least one nitrogen-to-oxygen bond, e.g. nitro-compounds, nitrates, nitrites {(C10L1/221 takes precedence)}
- C10L 1/231: {nitro compounds; nitrates; nitrites (C10L1/221 takes precedence)}
- C10L 2200/0446: Diesel
- C10L 2230/22: for improving fuel economy or fuel efficiency
- C10L: FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS

## Abstract

Disclosed is a diesel fuel composition containing 2-ethylhexyl nitrate (2-EHN) and one or more organic peroxides for providing improved fuel economy. The organic peroxides may have a cyclic peroxide of the general formula (I).

## Claims

### Claim 1

A diesel fuel composition comprising a diesel base fuel, 2-ethylhexylnitrate and one or more peroxides selected from the group of peroxides represented by the general formula (I) below:
wherein R1, R3, and R5 are independently selected from the group consisting of hydrogen, C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 aralkyl and C7-C20 alkaryl, which groups may include linear or branched alkyl moieties; R2, R4 and R6 are independently selected from the group consisting of hydrogen, C2-C20 alkyl, C3-C20 aryl, C7-C20 aralkyl, and C7-C20 alkaryl, which groups may include linear or branched alkyl moieties; and each of R1 to R6 may optionally be substituted with one or more groups selected from hydroxyl, alkoxy, linear or branched alkyl, aryloxy, ester, carboxy, nitrile, and amido.

### Claim 2 (depends on 1)

The diesel fuel composition of claim 1 wherein the amount of the one or more peroxides is in the range of from 0.001% w/w to 1% w/w, based on the weight of the total diesel fuel composition.

### Claim 3 (depends on 1)

The diesel fuel composition of claim 1 wherein the amount of 2-ethylhexyl nitrate is in the range of from 0.001% w/w to 1% w/w, based on the weight of the total diesel fuel composition.

### Claim 4 (depends on 1)

The diesel fuel composition of claim 1 wherein at least one of the peroxides in the fuel composition is derived from one or more ketones selected from the group consisting of acetone, methyl-n-amyl ketone, ethyl butyl ketone, ethylpropyl ketone, methylheptyl ketone, methylhexyl ketone, ethylamyl ketone, methylpropyl ketone, diethyl ketone, methylethyl ketone, isomers of these ketones, and mixtures thereof.

### Claim 5 (depends on 1)

The diesel fuel composition of claim 1 wherein the cyclic ketone peroxide of general formula (I) is selected from the group consisting of cyclic methylethyl ketone peroxide, cyclic methylisobutyl ketone peroxide, and cyclic methylisopropyl ketone peroxide.

### Claim 6 (depends on 1)

The diesel fuel composition of claim 1 comprising 2-ethylhexylnitrate and cyclic methylethyl ketone peroxide.

### Claim 7 (depends on 6)

The diesel fuel composition of claim 6 wherein the cyclic methylethyl ketone peroxide is 3,6,9-triethyl-3,6,9-trimethyl-1,4,7-triperoxonane.

### Claim 8 (depends on 1)

The diesel fuel composition of claim 1 further comprising one or more fuel additives.

### Claim 9 (depends on 1)

A method of operating an internal combustion engine and/or a vehicle powered by such an engine comprising introducing into a combustion chamber of the engine the diesel fuel composition of claim 1 and operating the internal combustion engine and/or the vehicle powered by such an engine.

### Claim 10 (depends on 1)

A method of improving the fuel economy performance of an internal combustion engine comprising introducing into a combustion chamber of the internal combustion engine a diesel fuel composition of claim 1.