CAJ | 학술논문

以溴化苄作为改性剂，采用化学键合方法对市售氧化钙进行表面改性，考察改性氧化钙固体碱催化菜籽油-甲醇酯交换反应制备生物柴油的性能，并在此基础上对该催化体系的耐水性进行考察。通过对反应体系中醇/油摩尔比、催化剂用量和反应时间进行优化，最终得出在醇/油摩尔比为15∶1，催化剂用量为5%以及表面改性剂溴化苄用量为0.2%时，表面改性氧化钙上生物柴油产率在反应3h即可达到99.8%，而未改性氧化钙为催化剂时在相同反应条件下生物柴油产率仅为35.3%。
이추화변작위개성제，채용화학건합방법대시수양화개진행표면개성，고찰개성양화개고체감최화채자유-갑순지교환반응제비생물시유적성능，병재차기출상대해최화체계적내수성진행고찰。통과대반응체계중순/유마이비、최화제용량화반응시간진행우화，최종득출재순/유마이비위15∶1，최화제용량위5%이급표면개성제추화변용량위0.2%시，표면개성양화개상생물시유산솔재반응3h즉가체도99.8%，이미개성양화개위최화제시재상동반응조건하생물시유산솔부위35.3%。
The relatively low reaction rate in the heterogeneous transesterification of vegetable oil with methanol using CaO as catalyst was the key factor of biodiesel production. In this work, we developed an efficient basic catalyst for biodiesel production by modifying com-mercial CaO with benzyl bromide in a simple way. It was found that 99.8%yield of the fatty acid methyl esters (FAME) over modified CaO was obtained after 3h comparable with 35.3%for commercial CaO under the same reaction condition. Optimization of reaction conditions were performed using most efficient modified CaO as catalyst to maximize the yield.