期刊论文

中文

化工新型材料

1006-3536

2010

38

2

87-89,114

10.3969/j.issn.1006-3536.2010.02.031

湖南省教育厅科技项目,“化学生物联合法制备绿色平台化合物——乙酰丙酸的研究”,编号08D124；

本校为第一机构

采用黑由霉和固体酸协同水解速生杨木粉制备乙酰丙酸,在相同的工艺条件下,经过酶解处理后乙酰丙酸的得率可提高5.17%.最佳酶解条件为:温度50℃、杨木粉粒度120目、酶液用量30U/g和反应时间8h.以SO_4~(2-)-TiO_2/粘土固体酸为催化剂水解酶解液及残渣制备乙酰丙酸,采用响应面分析方法对反应温度、反应时间和固体酸用量等主要因素进行了优化分析,得到了合成乙酰丙酸的最佳工艺条件.研究结果显示:当反应温度为242℃、反应时间为27min、固体酸用量为4.4%时,乙酰丙酸的得率可达到23.32%.

Levulinic acid（LA） was made from poplar powder by synergistic hydrolysis of chemistry and biology method with aspergillus niger and solid acid,the yield of LA was increased to 5.15% compared with the sample which was not enzymolysis in the same condition.The best enzymatic condition was the temperature as 50℃,the size of poplar powder as 200 mesh,the amount of enzyme as 30U/g and the reaction time as 8 hours.The reducing sugar and residue were hydrolyzed by SO4^2--TiO2/clay solid acid to make LA,the condition of temperatures,times and amount...