介孔碳基固体酸的制备及在生物柴油生产中的应用

发布时间：2018-04-11 01:05

  本文选题：碳化-磺化 + 介孔碳基固体酸　； 参考：《石油炼制与化工》2017年04期

【摘要】：以蔗糖为碳源、SiO_2为模板剂,采用碳化-磺化法制备介孔碳基固体酸催化剂,通过酸碱滴定、BET、XRD、FT-IR、SEM等方法对其进行表征,考察碳化温度、磺化温度对催化剂性能的影响,并将其用于大豆油与甲醇的酯交换反应,考察反应条件及原料中脂肪酸含量的影响。结果表明:制备催化剂的适宜条件为碳化温度400℃、磺化温度170℃;大豆油与甲醇酯交换反应的最佳条件为反应温度130℃、醇油摩尔比30、反应时间4h、催化剂用量(占大豆油质量的百分比)8%,生物柴油收率最高达95.94%;连续使用5次后,生物柴油收率仍达到85.46%,说明催化剂具有良好的稳定性;原料中的脂肪酸对催化剂性能有一定的负面影响,但当脂肪酸质量分数达到15%时,生物柴油收率依然可达90%以上。
[Abstract]:The mesoporous carbon-based solid acid catalyst was prepared by carbonation and sulfonation with sucrose as the carbon source. The catalyst was characterized by acid-base titration method. The effects of carbonation temperature and sulfonation temperature on the catalytic performance were investigated.It was applied to the transesterification of soybean oil with methanol, and the effects of reaction conditions and fatty acid content in raw materials were investigated.The results showed that the optimum conditions for the preparation of the catalyst were carbonation temperature 400 鈩，

本文编号：1733723