CAJ | 학술논문

采用浸渍法制备了K2 CO3/Al2 O3固体碱催化剂,考察了活性组分负载量、焙烧温度、焙烧时间等制备条件对催化剂在催化餐饮废油合成生物柴油的酯交换反应中催化活性的影响,并对其进行了FT-IR、XRD、TG-DTG、SEM 和BET表征分析。实验结果表明,所制备的催化剂在催化餐饮废油合成生物柴油的酯交换反应中表现出良好的活性,在活性组分K2 CO3负载量为50%、焙烧温度500℃、焙烧时间3 h的条件下制备的催化剂催化酯交换反应时,生物柴油产率可达86.70%。催化剂表征结果显示,K2 CO3/Al2 O3催化活性是因K2 CO3与Al2 O3经高温焙烧产生新的晶相有关。催化剂重复使用4次,生物柴油产率仍在75%以上。制得的生物柴油产品质量达到国家生物柴油B100标准。
채용침지법제비료K2 CO3/Al2 O3고체감최화제,고찰료활성조분부재량、배소온도、배소시간등제비조건대최화제재최화찬음폐유합성생물시유적지교환반응중최화활성적영향,병대기진행료FT-IR、XRD、TG-DTG、SEM 화BET표정분석。실험결과표명,소제비적최화제재최화찬음폐유합성생물시유적지교환반응중표현출량호적활성,재활성조분K2 CO3부재량위50%、배소온도500℃、배소시간3 h적조건하제비적최화제최화지교환반응시,생물시유산솔가체86.70%。최화제표정결과현시,K2 CO3/Al2 O3최화활성시인K2 CO3여Al2 O3경고온배소산생신적정상유관。최화제중복사용4차,생물시유산솔잉재75%이상。제득적생물시유산품질량체도국가생물시유B100표준。
The solid base catalyst K2 CO3/Al2 O3 was prepared by impregnation method. The factors to influence the reaction activity of producing biodiesel from waste cooking oil including the loading of active component K2 CO3 on the catalyst, the roasting temperature and the roasting time were investigated. The catalysts were characterized by FT-IR, XRD, TG-DTG, SEM and BET techniques. The results show that the catalyst exhibits an excellent catalytic activity for the transesterification of waste cooking oil to biodiesel. The solid base catalyst loaded with 50% K2 CO3 and calcinated at 500 ℃ for 3 h exhibits a high catalytic activity for the transesterification, and the yield of biodiesel reaches 86. 70%. The characterization reveals that the catalyst activity of K2 CO3/Al2 O3 is associated with the formation of new crystalline phase due to the interaction between K2 CO3 and Al2 O3 during calcination. After the catalyst is reused for 4 times, the yield of biodiesel is still above 75%. The main quality indexes of the product can reach the biodiesel B100 standard completely.