摘要
考察了4种不同催化剂对生物柴油产率的影响,发现自制的针状氧化锌对生物柴油的催化效果最佳.对针状氧化锌固体碱催化剂在超声波条件下,用于花生油和甲醇的酯交换反应制备生物柴油进行了研究,考察了超声波频率、醇油摩尔配比、催化剂用量等条件对反应的影响,试验结果表明该反应的最佳条件为:超声波频率30kHz,醇油摩尔配比为7∶1,催化剂用量为花生油质量的1.0%,此条件下生物柴油产率达93%.对所得生物柴油的主要性能指标进行考察,发现其主要性能指标符合德国现阶段的生物柴油标准.重复使用结果表明,针状氧化锌的催化活性比氧化镁、氧化钙及三氧化二铝的催化活性高,寿命更长,重复使用后催化效果无明显下降.
The homemade acicular zinc oxide has better catalytic effect on the preparation of bio-diesel by respectively studying four different catalysts.It was studied that the bio-diesel was obtained by the reaction of peanut oil and methanol using acicular nano-zinc oxide as catalyst under ultrasonic condition.The influence of ultrasonic frequency,the molar ratio of methanol to peanut oil and the amount of catalyst on the reaction were investigated.The optimum conditions were obtained as follows：the yield could reach over 93% when ultrasonic frequency was 30kHz,the molar ratio of methanol to peanut oil 7∶1 and the catalyst amount 1.0%.The main performances meet to the German bio-diesel standard at this stage by investigating the quality of the bio-diesel synthesized.The repeated experiments indicate that the acicular zinc oxide has of better catalytic activity,longer using time and better stable catalytic effect than magnesium oxide,calcium oxide and aluminum oxide.
出处
《应用基础与工程科学学报》
EI
CSCD
2011年第1期44-51,共8页
Journal of Basic Science and Engineering
基金
辽宁省百千万人才工程资助项目(No.2008921042)
关键词
生物柴油
超声波
针状氧化锌
酯交换反应
bio-diesel
ultrasonic
acicular zinc oxide
ester-exchange reaction
