CAJ | 학술논문

　　利用固体催化剂催化废弃动物油脂制取生物柴油可以实现催化剂的重复利用、降低原料成本，从而提高生物柴油的市场竞争力。该文以牛油为原料，在自制固体催化剂Cs2O/γ-Al2O3的催化作用下与甲醇酯交换反应制备生物柴油。采用响应面法对反应过程进行了优化，试验考察了醇油摩尔比、催化剂用量、反应时间和反应温度等操作条件对酯交换反应的影响，并得到了最优反应条件，即反应温度66℃，醇油摩尔比10.5：1，催化剂用量5.3%，反应时间120 min，生物柴油的酯交换率达到95.5%。反应后固体催化剂在400℃下灼烧4 h后可以重复利用，重复利用8次后酯交换率下降不到6%。研究结果将为固体催化剂催化废弃动物油脂制取生物柴油的连续和产业化生产提供试验基础，为提高生物柴油的市场竞争力提供参考。
　　이용고체최화제최화폐기동물유지제취생물시유가이실현최화제적중복이용、강저원료성본，종이제고생물시유적시장경쟁력。해문이우유위원료，재자제고체최화제Cs2O/γ-Al2O3적최화작용하여갑순지교환반응제비생물시유。채용향응면법대반응과정진행료우화，시험고찰료순유마이비、최화제용량、반응시간화반응온도등조작조건대지교환반응적영향，병득도료최우반응조건，즉반응온도66℃，순유마이비10.5：1，최화제용량5.3%，반응시간120 min，생물시유적지교환솔체도95.5%。반응후고체최화제재400℃하작소4 h후가이중복이용，중복이용8차후지교환솔하강불도6%。연구결과장위고체최화제최화폐기동물유지제취생물시유적련속화산업화생산제공시험기출，위제고생물시유적시장경쟁력제공삼고。
The production of biodiesel from abandoned animal fat catalyzed by solid catalysts can realize the catalysts reutilization, decrease the cost of raw materials, thus enhancing the market competitiveness of biodiesel. The transesterification reaction of beef tallow and methanol to product biodiesel using Cs2O/γ-Al2O3 as solid catalyst was studied in this study. Response surface methodology and Box-Behnken experimental design were employed to optimize the reaction conditions. The variables of the molar ratio of methanol to oil, catalyst amount, reaction time and reaction temperature were investigated, and the optimum conditions were obtained:molar ratio of methanol to oil 10.5:1, catalyst amount 5.3%(based on the weight of oil), reaction time 120 min, reaction temperature 66℃. Under this optimum reaction conditions, the biodiesel yield was 95.5%. The collected catalyst can be reused after being calcined for 4 h at 400℃ and the biodiesel yields decreased less than 6%after the catalyst being reused for eight cycles in the repeated experiments. The results would offer experimental foundation for the continuous and industrial production of biodiesel catalyzed by solid catalysts from abandoned animal fat, and provide references for improving the market competitiveness of biodiesl.