酸性离子液体(CH2)4SO3HMIMHSO4催化潲水油制备生物柴油的研究

摘要

Acid ionic liquid [ (CH2)4SO3HMIM] [HSO4] was prepared and was used as the catalyst for transesterification of waste cooking oil to biodiesel. The influence of reaction time, reaction temperature, molar ratio of methanol to oil, mole ratio of reagent to oil on transesterification was investigated. The results showed that acid ionic liquid [ (CH2 )4SO3HMIM] [ HSO4] exhibited good catalytic activity in transesterification of waste cooking oil to biodiesel, and the transesterification rate of 92. 13% was attained under the optimum condition as follows: reaction time 4 h, reaction temperature 140 ℃ , molar ratio of methanol to oil 12, and molar ratio of reagent to oil 0. 08. The as-prepared biodiesel met the requirementrnof China biodiesel quality specification——GB/T20828-2007 Biodiesel blend stock ( BD100 ) diesel rnengine fuels.%制备了酸性离子液体[(CH2)4SO3HMIM][HSO4],并用于催化潲水油制备生物柴油,研究了反应时间、反应温度、醇油物质的量比和剂油物质的量比等对酯交换反应转化率的影响,确定了较适宜的反应条件.结果表明,在反应时间4h、反应温度140℃、醇油物质的量比12和剂油物质的量比0.08条件下,酯交换反应转化率为92.13％.制备的生物柴油达到了中国柴油机燃料调合用生物柴油(BD100)标准GB/T20828 - 2007.