CAJ | 학술논문

采用了浸渍法制备了KNO3/Al2O3固体碱催化剂，考察了催化剂制备条件对假紫罗兰酮合成的影响，并对其进行了Hammett指示剂法、FTIR、XRD表征分析。结果表明：所制备的催化剂在催化合成假紫罗兰酮的缩合反应中表现出良好的活性，当活性组分KNO3的负载质量分数为25%、浸渍时间为6 h、焙烧温度为600℃时，所制备的催化剂催化合成假紫罗兰酮产率可达87.5%。对催化剂的表征结果表明，催化剂的活性与高温焙烧KNO3和Al2O3发生相互作用形成的Al-O-K结构及KNO3分解产物K2O有关。
채용료침지법제비료KNO3/Al2O3고체감최화제，고찰료최화제제비조건대가자라란동합성적영향，병대기진행료Hammett지시제법、FTIR、XRD표정분석。결과표명：소제비적최화제재최화합성가자라란동적축합반응중표현출량호적활성，당활성조분KNO3적부재질량분수위25%、침지시간위6 h、배소온도위600℃시，소제비적최화제최화합성가자라란동산솔가체87.5%。대최화제적표정결과표명，최화제적활성여고온배소KNO3화Al2O3발생상호작용형성적Al-O-K결구급KNO3분해산물K2O유관。
The solid base catalyst KNO3/Al2O3 was prepared by impregnation method. The effects of catalyst preparation conditions on the yield of pseudoionone were investigated. The catalysts were characterized by Hammett indicator method,FTIR, XRD. The results show that the catalyst exhibits an excellent catalytic activity for synthesis of pseudoionone;When the solid base catalyst loaded with was 25%KNO3, impregnation time was 6 hours and calcination temperature was 600℃, exhibits a high catalytic activity for the condensation, the catalytic synthesis yield of pseudoionone with the prepared catalyst reached 87.5%. The characterization results revealed that the catalyst activity of KNO3/Al2O3 was associated with Al-O-K and K2O (decomposed and produced by KNO3), which formed from the interaction between KNO3 and Al2O3 during calcination.