CAJ | 학술논문

采用浸渍法制备了磷钨酸/硅胶催化剂，将此催化剂用于催化噻吩乙酰化反应合成2-乙酰噻吩，考察了磷钨酸负载量和催化剂干燥温度对催化剂活性的影响。结果表明催化剂中磷钨酸的负载量为40%、催化剂的干燥温度为120~200℃时，催化剂的活性较高。200℃干燥的催化剂具有较好的重复使用性。在适宜的条件下，噻吩与过量的乙酸酐反应，得到2-乙酰噻吩的收率达90%。
채용침지법제비료린오산/규효최화제，장차최화제용우최화새분을선화반응합성2-을선새분，고찰료린오산부재량화최화제간조온도대최화제활성적영향。결과표명최화제중린오산적부재량위40%、최화제적간조온도위120~200℃시，최화제적활성교고。200℃간조적최화제구유교호적중복사용성。재괄의적조건하，새분여과량적을산항반응，득도2-을선새분적수솔체90%。
The catalysts phosphotungstic acid/silica gel were prepared by impregnation for the synthesis of 2-acetyl thiophene. The influences of phosphotungstic acid loading and drying temperature on catalysts were investigated. The results showed that the catalyst with 40%phosphotungstic acid had higher activity, which was dried at 120~200℃, and the catalyst dried at 200℃had better reusability. Under suitable conditions, 2-acetyl thiophene was synthesized from thiophene and acetic anhydride with 90%yield.