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SO₄^2-/TiO₂-Al₂O₃催化水解花生壳制备乙酰丙酸的研究

Preparation of Levulinic Acid from Peanut Shells Hydrolyzed by Solid Acid of SO₄^2-/TiO₂-Al₂O₃

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【Author】 ZHANG Ning1,CHAO Cai-ling2,LIU Dong-lian1,LIU Shuang1(1.Department of Chemistry,Tangshan Teachers College,Tangshan 063000,China;2.Luanzhou Branch School,Tangshan Teachers College,Tangshan 063700,China)

【机构】唐山师范学院化学系；唐山师范学院滦州分校；

【摘要】以花生壳为原料,以SO42-/TiO2-Al2O3固体酸为水解催化剂制备乙酰丙酸,探讨了固体酸用量,水解时间,水解温度,液固比对乙酰丙酸得率的影响。研究结果表明,当固体酸用量3.5%、水解时间150 min、水解温度250℃、液固比21:1(L/mg)时为较优的制备工艺。在该工艺条件下,乙酰丙酸得率为12.35%。更多还原

【Abstract】 Levulinic acid(LA) can be prepared from peanut shells with SO42-/TiO2-Al2O3solid acid as hydrolysis catalyst.The effects on the amount of solid acid,hydrolysis time,hydrolysis temperature and liquid-solid ratios on the LA yield had been discussed in this thesis.The experimental results showed that the optimal conditions as follow: solid acid was 3.5%,hydrolysis time was 150 min,hydrolysis temperature was 250 ℃,and liquid-solid ratio was 21:1(L/mg).Under this condition,the LA yield could reach to 12.35%.更多还原