期刊论文

Synthesis of Pyridine and 3-Picoline from Acrolein Diethyl Acetal and Ammonia over La-and KF-modified Y Type Zeolite Catalysts

中文

应用化学

1000-0518

2018

35

5

559-563

10.11944/j.issn.1000-0518.2018.05.170154

国家自然科学基金（21376068） 南华大学博士科研启动基金（2016XQD36） 湖南省教育厅科学研究项目（17C1361）资助

本校为第一机构

在连续流动固定床反应中,以丙烯醛二乙缩醛、水和氨为原料,合成了吡啶和3-甲基吡啶.比较了La-和KF-改性Y型分子筛的活性大小,考察了La负载量和改性方式、KF负载量及KF/Y的焙烧温度的影响.研究结果表明,与纯Y型分子筛相比,La和KF改性Y型分子筛均能增强催化活性.采用浸渍法和La负载量为1%(质量分数)时,吡啶和3-甲基吡啶总收率达到最高值;与浸渍法相比,采用离子交换法制备La-Y的活性更好.采用浸渍法、KF负载量为1%(质量分数)和KF/Y的焙烧温度为700 ℃时,吡啶和3-甲基吡啶总收率达到最大值.

The synthesis of pyridine and 3-picoline from the reaction of acrolein diethyl acetal,water and ammonia was conducted in a fixed-bed reactor. The catalytic activities of La-and KF-modified Y zeolites were compared. Various influencing parameters,including the loadings and modified ways of La species,the loadings of KF and the calcination temperature of KF /Y,were systematically investigated. Compared to pure Y zeolite,La-and KF-modifications can enhance the catalytic activities. The catalytic activity of La-modified Y through ion exchange is be...