The Effect of Adding Oxygenated Compounds to Gasoline on Automotive Exhaust Emissions

2002 ◽  
Vol 125 (1) ◽  
pp. 344-350 ◽  
Author(s):  
S. G. Poulopoulos ◽  
C. J. Philippopoulos
Keyword(s):  
Octane Number ◽  
Combustion Engine ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Research Octane Number ◽  
Oxygenated Compounds ◽  
Reid Vapor Pressure ◽  
Three Way Catalyst ◽  
Unregulated Emissions

In the present work, the effect of adding ethanol or methyl tertiary butyl ether (MTBE) to gasoline on the regulated and unregulated emissions from an internal combustion engine with a typical three-way catalyst was studied. The addition of ethanol to fuel (10% w/w) increased both the research octane number and the Reid vapor pressure of the fuel, whereas adding 11% w/w MTBE caused an increase only in the research octane number of the fuel. When the fuel contained MTBE, less hydrocarbons, carbon monoxide, and acetaldehyde were emitted in the tailpipe. The increased emissions of acetaldehyde and ethanol were the main disadvantages of using ethanol.

The effects of addition of co-solvents on the physicochemical properties of gasoline–methanol blended fuels

2018 ◽  
Vol 20 (5) ◽  
pp. 501-509 ◽  
Author(s):  
Isaac Schifter ◽  
Luis Diaz ◽  
Uriel Gonzalez ◽  
Carmen Gonzalez-Macias ◽  
Isidro Mejía-Centeno
Keyword(s):  
Vapor Pressure ◽  
Physicochemical Properties ◽  
Ternary Mixture ◽  
Isopropyl Alcohol ◽  
Pressure Increase ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Reid Vapor Pressure ◽  
Blended Fuels

The scope of the work carried out is aimed to evaluate the effects of blending methanol in the gasoline pool, particularly octane number and Reid vapor pressure increase when methanol is substituting methyl-tertiary-butyl ether in the formulation of Regular and Premium base gasolines. Isopropyl alcohol and ethanol have been investigated and found to be a promising co-blending alcohol to be mixed in gasoline methanol blends. Isopropyl alcohol is most effective below 3 vol%. Ethanol has been found to be the most promising co-blending alcohol able to reduce the Reid vapor pressure increase by 1.4 psi even with concentrations in the range of 2 vol%. The addition of isopropyl alcohol to the methanol–gasoline blends has shown the ability of a ternary mixture to further reduce the Reid vapor pressure of the finished gasoline and, subject to availability and price of isopropyl alcohol, could be of interest in further formulation studies focused on maximizing the saving on finished gasoline cost by reducing the Reid vapor pressure of base gasoline and/or increasing the methanol content.

APPLICATION OF IR SPECTROSCOPY IN THE STUDY OF MINERAL OIL

2017 ◽  
pp. 91-95
Author(s):  
E. I. Grushova ◽  
A. .. Al Razuqi ◽  
E. S. Chaiko ◽  
O. A. Miloserdova
Keyword(s):  
Ir Spectroscopy ◽  
Group Composition ◽  
Mineral Oil ◽  
Vacuum Distillate ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Mineral Oils ◽  
Modifying Additive

IR spectroscopy investigated structural and group composition of base mineral oils isolated from the vacuum distillate by selective purification of N-methylpyrrolidone and the low temperature dewaxing in the presence of a solvent. The role of the latter was carried out by the systems acetone - toluene, acetone - methyl tertiary butyl ether, methyl ethyl ketone - toluene, acetone - toluene - modifying additive. It was shown that the chemical composition of the group of base oils and slack waxes is defined as the nature of the solvent to the dewaxing, and oils sequence of purification steps.

Methyl tertiary-butyl ether mode of action for cancer endpoints in rodents

2007 ◽  
Vol 47 (2) ◽  
pp. 156-165 ◽  
Author(s):  
George Cruzan ◽  
Susan J. Borghoff ◽  
Ann de Peyster ◽  
Gordon C. Hard ◽  
Michael McClain ◽  
...  
Keyword(s):  
Mode Of Action ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl

Simulation of Methyl Tertiary Butyl Ether Production in Catalytic Distillation

2012 ◽  
Vol 263-266 ◽  
pp. 444-447
Author(s):  
Jin Nan Chen ◽  
Yu Chun Zhang ◽  
Xing Yong Sun
Keyword(s):  
Relative Error ◽  
Conversion Rate ◽  
Model Development ◽  
Methyl Tertiary Butyl Ether ◽  
Reflux Ratio ◽  
Distillation Process ◽  
Butyl Ether ◽  
Catalytic Distillation ◽  
Design Data ◽  
Tertiary Butyl

The software of the catalytic distillation process of methyl tertiary butyl ether was developed by using Process Simulation System Platform. The isobutylene conversion rate was calculated by using the catalytic distillation software. The relative error of isobutylene conversion rate between the simulation results and the design data from the China Petroleum Hohhot Petrochemical Co. was less than 5%. The relative error satisfies industrial design requirements. At present, enterprise workers use this software to learn how to operate the catalytic distillation process. The catalytic distillation software is further used to study the influence of reaction temperature and reflux ratio on the isobutylene conversion rate which can be used for future empirical model development and control studies.

Estimation of Respiratory Irritancy from Inhaled Methyl Tertiary Butyl Ether in Mice

1994 ◽  
Vol 6 (6) ◽  
pp. 563-569 ◽  
Author(s):  
Jeffrey S. Tepper ◽  
Mette C. Jackson ◽  
John K. McGee ◽  
D. L. Costa ◽  
J. A. Graham
Keyword(s):  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl

Two-generation Reproductive Toxicity Study of Methyl Tertiary-butyl Ether (MTBE) in Rats

1997 ◽  
Vol 17 (S1) ◽  
pp. S13-S19 ◽  
Author(s):  
C. Bevan ◽  
T. L. Neeper-Bradley ◽  
R. W. Tyl ◽  
L. C. Fisher ◽  
R. D. Panson ◽  
...  
Keyword(s):  
Reproductive Toxicity ◽  
Toxicity Study ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl
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