Basic knowledge of alkylated gasoline

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This post was last edited by yinkuilin6868 on 2015-11-26 at 11:02. 1. Characteristics of alkylated gasoline: It mainly consists of isoparaffins, with almost no olefins or aromatics; it has a low sulfur content. It possesses a high octane rating, typically ranging from 95 to 96, and can even reach 98. This type of gasoline is less sensitive; the difference between its octane rating and its motor octane rating is less than 3. It also has a low vapor pressure, allowing for the use of inexpensive, high-octane butane in its composition. Additionally, it has a high heat of combustion, making it suitable for use in engines with high compression ratios. 2. Raw materials for alkylation: Isoparaffins: Isobutane. Olefins: isobutylene, 1-butene, cis-2-butene, and trans-2-butene. The results of alkylation reactions for different butene isomers also vary. When hydrofluoric acid is used as a catalyst, the alkylated products of 2-butene have the highest octane number, those of isobutylene come next, and those of 1-butene have the lowest octane number. When sulfuric acid is used as a catalyst, the octane number of the alkylated oil obtained from 1-butene is slightly higher than that of the alkylated products derived from 2-butene and isobutylene.