摘要
在单因素试验的基础上,采用响应曲面法对TiO_2催化正丁醛气相自缩合反应条件进行了优化。结果表明,在空时8 g·min?m L^(-1)、反应温度180℃、反应压力2.0 MPa的条件下,辛烯醛收率为81.2%,选择性为96.6%。在此基础上考察了TiO_2催化剂的稳定性,发现运行300 h后正丁醛的转化率、辛烯醛的收率和选择性基本保持不变,说明TiO_2具有良好的催化稳定性。
Gas-phase self-condensation of n-butyraldehyde catalyzed by TiO2was optimized by response surface methodology based on single factor experimental results.The results show that the yield and selectivity of2-ethyl-2-hexenal are81.2%and96.6%respectively under conditions of space-time8g·min·mL-1,reaction temperature180℃and reaction pressure2.0MPa.The stability of the TiO2catalyst was also investigated and the results show that the conversion of n-butyraldehyde,the yield and selectivity of2-ethyl-2-hexenal remain unchanged after300h,which indicates good stability of TiO2.
作者
朱园园
何茜
安华良
耿艳楼
赵新强
王延吉
ZHU Yuan-yuan;HE Xi;AN Hua-liang;GENG Yan-lou;ZHAO Xin-qiang;WANG Yan-ji(Hebei Provincial Key Laboratory of Green Chemical Technology and Efficient Energy Saving,School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China)
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2018年第6期1338-1344,共7页
Journal of Chemical Engineering of Chinese Universities
基金
国家自然科学基金(21476058,21506046)
天津市自然科学青年基金(16JCQNJC06100).
关键词
TIO2
响应曲面法
正丁醛
羟醛缩合
TiO2
response surface methodology
n-butyraldehyde
aldol condensation