tert-Butyl Ethers of Renewable Diols as Oxygenated Additives for Motor Gasoline. Part I: Glycerol and Propylene Glycol Ethers

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Abstract

The study investigates tert-butoxy alkanols (otherwise defined as polyol tert-butyl ethers) that have vicinal tert-butoxy and hydroxy groups in their molecules from the perspective of their usability as oxygenated additives for motor gasoline. A series of propylene glycol mono-tert-butyl ether (PTBE) and glycerol di-tert-butyl ether (di-GTBE) samples were prepared: PTBE by direct acid-catalytic alkylation of diols with tert-butanol, and di-GTBE by alkylation of epichlorohydrin. Adding PTBE and di-GTBE to base motor gasoline was found to improve its antiknock performance: the average blending research octane number to blending motor octane number ratios (bRON/bMON) equaled 120/111 and 124/104 for PTBE and di-GTBE, respectively. Furthermore, the effects of the ether additives on the properties of ethanol-blended base gasoline were characterized. Finally, the study describes the effect of polyol tert-butyl ether additives on the cloud point depression of ethanol-blended gasoline (low-temperature phase stabilization) and demonstrates a positive synergistic effect of adding the ethers mixed with ethanol

 

About the authors

V. O. Samoylov

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences

Email: lavrentev@ips.ac.ru
119991, Moscow, Russia

T. I. Stolonogova

Gubkin Russian State University of Oil and Gas (National Research University)

Email: lavrentev@ips.ac.ru
119991, Moscow, Russia

D. N. Ramazanov

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences

Email: lavrentev@ips.ac.ru
119991, Moscow, Russia

E. V. Tyurina

Gubkin Russian State University of Oil and Gas (National Research University)

Email: lavrentev@ips.ac.ru
119991, Moscow, Russia

V. A. Lavrent'ev

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences

Email: lavrentev@ips.ac.ru
119991, Moscow, Russia

Yu. I. Porukova

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences

Email: lavrentev@ips.ac.ru
119991, Moscow, Russia

E. A. Chernysheva

Gubkin Russian State University of Oil and Gas (National Research University)

Email: lavrentev@ips.ac.ru
119991, Moscow, Russia

V. M. Kapustin

Gubkin Russian State University of Oil and Gas (National Research University)

Author for correspondence.
Email: lavrentev@ips.ac.ru
119991, Moscow, Russia

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