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

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-12-07 DOI:10.1134/S0965544123060154

V. O. Samoilov, T. I. Stolonogova, D. N. Ramazanov, E. V. Tyurina, M. U. Sultanova, V. A. Lavrent’ev, S. S. Krasnoshtanova, E. A. Chernysheva, V. M. Kapustin

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Abstract

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.

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可再生二醇叔丁基醚作为汽车汽油加氧剂的研究。第二部分:乙二醇和2,3-丁二醇的醚

介绍了邻丁醇(叔丁醇)作为汽车汽油添加剂的研究结果。以乙二醇和2,3-丁二醇为原料，在酸催化下与叔丁醇直接烷基化，制备了乙二醇和2,3-丁二醇单叔丁基醚。对所得物质的主要物理性质(密度、粘度、沸点、结晶点、燃烧比热)进行了表征，并对其作为汽车汽油添加剂进行了研究。研究了醚类添加剂对含乙醇汽油的主要理化性能(组分、饱和蒸气压、实际树脂浓度、耐爆性)的影响。ETBE和BTBE的平均研究/发动机混合辛烷值分别为130/103和115/97。将ETBE/BTBE加入到含乙醇汽油的配方中，可以大大降低云点，而不会对抗爆性产生明显的协同效应。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.