异丁醛异构为甲乙酮的研究(Ⅱ)  

STUDIES ON THE ISOMERIZATION OF ISOBUTYRALDEHYDE TO METHYL KETONE II

作　　者：王敬春[1] 许章林 张盈珍[1] 周贤敏 

机构地区：[1]中国科学院大连化学物理研究所,116023

出　　处：《精细石油化工》1995年第4期36-39,共4页Speciality Petrochemicals

基　　金：国家自然科学基金资助课题

摘　　要：考察了在BZSM-5上引入数种离子后异丁醛反应活性及甲乙酮选择性的变化.Mg^(2+)、Cu^(2+)的引入,不同程度地降低了异丁醛的反应活性,提高了甲乙酮的选择性;而Ca^(2+)、La^(3-)的引入,则使反应活性升高,甲乙酮选择性降低.Sn^(2+)的引入对反应影响不明显.进一步用水蒸汽处理金属离子改性BZSM-5,其异丁醛反应性能也发生程度不等的变化.在多种催化剂上,甲乙酮的收率接近或超过65%.The reactivity of isobutyraldehyde(IBH) on zeolite BZSM-5 modified by different ions had been investi-gated. With the introduction of Cu2+ or Mg2+,the conversion of IBH decreased and the methyl ethyl ketone (MEK) selectivity increased. The introduction of Ca2+ or La3+ increased the IBH conversion but decreased the MEK selectivity. On Sn2+ modified BZSM-5 no obvious changes on IBH reactivity have been found. On the samples modified by further steam treatment the reactivity changes to some extent. The MEK yield is higher than 65% on some samples on certain reaction conditions.

关 键 词：异丁醛 甲乙酮 异构化 

分 类 号：O621.14[理学—有机化学] TQ203.4[理学—化学]