CAJ | 학술논문

通过溶胶-凝胶法制备了 SiO2载体,所得载体再通过浸渍法制备得到负载 Ti ( SO4)2和Zr( SO4)2的复合型固体酸催化剂SiO2-Ti( SO4)2-Zr( SO4)2,利用热重分析( TG-DTG)和傅里叶红外光谱( FTIR)对催化剂的特性进行初步表征。此外,以转化率为指标,研究了复合型固体酸催化剂在麻疯树籽油醇解反应中的催化活性,并考察催化剂用量、醇油摩尔比、反应温度和反应时间对醇解反应的影响。 TG-DTG分析结果表明,催化剂的焙烧温度应选择300℃,此条件下可以制备催化活性较好的催化剂；FTIR表征结果表明,浸渍Ti(SO4)2和Zr(SO4)2后,该活性物质成功负载到SiO2载体表面。单因素实验结果表明最佳反应条件为：反应温度120℃,催化剂用量5%,醇油摩尔比15∶1,反应时间5 h；在此条件下,麻疯树籽油的转化率最高可达92.53%。
통과용효-응효법제비료 SiO2재체,소득재체재통과침지법제비득도부재 Ti ( SO4)2화Zr( SO4)2적복합형고체산최화제SiO2-Ti( SO4)2-Zr( SO4)2,이용열중분석( TG-DTG)화부리협홍외광보( FTIR)대최화제적특성진행초보표정。차외,이전화솔위지표,연구료복합형고체산최화제재마풍수자유순해반응중적최화활성,병고찰최화제용량、순유마이비、반응온도화반응시간대순해반응적영향。 TG-DTG분석결과표명,최화제적배소온도응선택300℃,차조건하가이제비최화활성교호적최화제；FTIR표정결과표명,침지Ti(SO4)2화Zr(SO4)2후,해활성물질성공부재도SiO2재체표면。단인소실험결과표명최가반응조건위：반응온도120℃,최화제용량5%,순유마이비15∶1,반응시간5 h；재차조건하,마풍수자유적전화솔최고가체92.53%。
SiO2 carrier was prepared by gel -sol method and the composite solid acid catalyst SiO2 -Ti( SO4 ) 2 -Zr( SO4 ) 2 was synthesized by impregnating Ti( SO4 ) 2 and Zr( SO4 ) 2 to the SiO2 carrier. The primary characterization of the catalyst was analyzed by FTIR and TG-DTG . The catalytic activity of the catalyst in the alcoholysis reaction of Jatropha curcas L. seed oil was studied. The effects of catalyst dos-age, molar ratio of methanol to oil, reaction time and reaction temperature on alcoholysis reaction were investigated with conversion rate as index. TG-DTG analysis result showed the calcination temperature should be set at 300℃ so as to prepare high catalytic and efficient catalyst;FTIR characterization result indicated Ti( SO4 ) 2 and Zr( SO4 ) 2 had been successfully loaded on the surface of SiO2 carrier after im-pregnation. The optimal reaction conditions were obtained by single factor experiment as follows:reaction temperature 120℃, molar ratio of methanol to oil 15∶1, catalyst dosage 5% and reaction time 5 h. Under these conditions, the conversion rate of Jatropha curcas L. seed oil was the highest, reaching 92. 53%.