Haydée Quiroga-Becerra, Carlos Mejía-Miranda, D. A. Laverde-Cataño, M. Hernández-López, Mauricio Gómez-Sánchez
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引用次数: 15
摘要
以总酸值为7.33 mgKOH/g的哥伦比亚重质原油为原料，在间歇式反应器中进行了环烷酸酯化反应动力学研究。温度在150 ~ 250℃之间变化，而甲醇摩尔数与羧基摩尔数之比保持在20:1不变。反应时间从0 ~ 600分钟不等。反应器中环烷酸浓度的降低是通过测量总酸数(TAN)， ASTM D 664来确定的。采用傅里叶变换红外光谱(FTIR)、核磁共振(NMR)和凝胶渗透色谱(GPC)对其结构进行了表征。
A KINETIC STUDY OF ESTERIFICATION OF NAPHTHENIC ACIDS FROM A COLOMBIAN HEAVY CRUDE OIL
This article presents the kinetic study of the esterification reaction of naphthenic acids from a Colombian heavy crude oil, with a Total Acid Number (TAN) of 7,33 mgKOH/g, in a batch type reactor. Temperature was changed between 150 - 250°C while the ratio moles of methanol per mole of carboxylic groups, remained constant in 20:1. The reaction time was varied from 0 - 600 minutes. Reduction in the concentration of naphthenic acids in the reactor is determined by the measurement of Number Total Acid (TAN), ASTM D 664. Naphthenic acids were extracted from the crude and structurally characterized by Fourier Transform Infrared Spectroscopy (FTIR), Nuclear Magnetic Resonance (NMR) and Gel Permeation Chromatography (GPC).
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