KOH/ZrO2催化制备生物柴油新工艺

doi:10.11949/j.issn.0438-1157.20161582

化工学报 ›› 2016, Vol. 67 ›› Issue (S2): 176-183.DOI: 10.11949/j.issn.0438-1157.20161582

• 催化、动力学与反应器 • 上一篇下一篇

KOH/ZrO₂催化制备生物柴油新工艺

黄振东^1,2, 王睿¹, 于美青^1,2

1. 山东大学深圳研究院, 广东深圳 518057;
2. 山东大学环境科学与工程学院, 山东济南 250199

收稿日期:2016-11-08 修回日期:2016-11-18 出版日期:2016-12-30 发布日期:2016-12-30
通讯作者: 王睿
基金资助:
深圳市知识创新计划项目（JCYJ20150626095215791）。

New technique of biodiesel preparation catalyzed by KOH/ZrO₂

HUANG Zhendong^1,2, WANG Rui¹, YU Meiqing^1,2

1. Shenzhen Research Institute of Shandong University, Shenzhen 518057, Guangdong, China;
2. School of Environmental Science & Engineering, Shandong University, Jinan 250199, Shandong, China

Received:2016-11-08 Revised:2016-11-18 Online:2016-12-30 Published:2016-12-30
Supported by:
supported by the Scientific Innovation Program of Shenzhen(JCYJ20150626095215791).

摘要/Abstract

摘要：

采用浸渍法，将KOH负载在新型载体氧化锆上，通过高温煅烧得到了固体碱催化剂。探讨了制备条件对催化剂催化酯交换反应活性的影响，获得了催化剂的最佳制备条件，以大豆油和甲醇为原料研究并优化了催化酯交换反应制备生物柴油的工艺条件。结果表明，固体碱催化剂KOH/ZrO₂的最佳制备条件为：KOH负载量20%，煅烧温度600℃，煅烧时间2 h。固体碱催化剂催化酯交换反应的最优反应条件为：醇油比9：1，反应温度75℃，反应时间3 h，催化剂用量4.0%。各因素对产率影响的大小为：醇油摩尔比 > 反应温度 > 反应时间 > 催化剂用量。

关键词: 固体碱, 催化剂, KOH/ZrO₂, 生物柴油, 制备, 酯交换反应, 载体

Abstract:

The solid base catalyst KOH/ZrO₂was prepared by impregnation method,in which KOH was loaded onto a new support,ZrO₂,and followed by drying and high temperature calcinations.The catalyst was characterized by XRD,TGA-DSC and FT-IR respectively.The results show that KOH has been loaded on ZrO₂ successfully,which can be proved by the appearance of coordinated hydroxyls on the surface of ZrO₂.However,the crystal structure of KOH/ZrO₂ does not change significantly when compared with the structure of carrier.The preparation conditions for catalysts of different loading amount were determined via transesterification reaction.The optimal preparation conditions are as follows:loading amount of KOH 20%, calcination temperature 600℃,calcination time 2 h.The solid base catalyst KOH/ZrO₂ was applied in catalyzing the transesterification of soybean oil with methanol,and the maximum yield of biodiesel can be higher than 90%.The influence of the reaction variables on the conversion was also investigated,and the optimal reaction conditions are as follows:reaction temperature 75℃,oil/methanol molar ratio 9:1,reaction time 3 h,catalyst dosage 4.0%(mass).

Key words: solid base, catalyst, KOH/ZrO₂, biodiesel, preparation, transesterification, support

中图分类号:

TQ032.4

黄振东, 王睿, 于美青. KOH/ZrO₂催化制备生物柴油新工艺[J]. 化工学报, 2016, 67(S2): 176-183.

HUANG Zhendong, WANG Rui, YU Meiqing. New technique of biodiesel preparation catalyzed by KOH/ZrO₂[J]. CIESC Journal, 2016, 67(S2): 176-183.

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KOH/ZrO₂催化制备生物柴油新工艺

New technique of biodiesel preparation catalyzed by KOH/ZrO₂

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