tert-Butyl Ethers of Renewable Diols as Oxygenate Additives to Automobile Gasolines. Part II: Ethers of Ethylene Glycol and 2,3-Butanediol

tert-Butyl Ethers of Renewable Diols as Oxygenate Additives to Automobile Gasolines. Part II: Ethers of Ethylene Glycol and 2,3-Butanediol

The results obtained in the second part of the study of vicinal ( tert- butoxy)alkanols as additives to automobile gasolines are presented. Mono- tert- butyl ethers of ethylene glycol (ETBE) and 2,3-butanediol (BTBE) were prepared by direct acid-catalyzed alkylation of the corresponding diols with t...

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Bibliographic Details
Published in:Petroleum chemistry Vol. 63; no. 8; pp. 949 - 958
Main Authors: Samoilov, V. O., Stolonogova, T. I., Ramazanov, D. N., Tyurina, E. V., Sultanova, M. U., Lavrent’ev, V. A., Krasnoshtanova, S. S., Chernysheva, E. A., Kapustin, V. M.
Format: Journal Article
Language:English
Published: Moscow Pleiades Publishing 01-08-2023
Springer Nature B.V
Subjects:
Additives
Alkylation
Boiling points
Butanediol
Butanol
Chemistry
Chemistry and Materials Science
Crystallization
Diols
Ethanol
Ethers
Ethylene glycol
Formulations
Gasoline
Heat of combustion
Industrial Chemistry/Chemical Engineering
Octane number
Physical properties
Synergistic effect
Vapor pressure
oxygenates
ethers
glycols
octane boosters
2,3-butanediol
octane number
alcohols
gasoline
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Summary:The results obtained in the second part of the study of vicinal ( tert- butoxy)alkanols as additives to automobile gasolines are presented. Mono- tert- butyl ethers of ethylene glycol (ETBE) and 2,3-butanediol (BTBE) were prepared by direct acid-catalyzed alkylation of the corresponding diols with tert- butanol. The substances obtained were characterized by main physical properties (density, viscosity, boiling point, crystallization point, specific heat of combustion) and were studied as additives to automobile gasolines. The effect of ether additives on the main physicochemical properties of gasolines (fractional composition, saturated vapor pressure, concentration of actual resins, knock resistance), including ethanol-containing gasolines, was studied. The mean research/motor blending octane numbers for ETBE and BTBE were 130/103 and 115/97, respectively. Inclusion of ETBE/BTBE into the formulations of ethanol-containing gasolines allowed the cloud point to be considerably reduced without unambiguous synergistic effect on the knock resistance.
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544123060154