CAJ | 학술논문

以淀粉和对甲苯磺酸为原料合成了碳基固体酸催化剂,并采用FTIR、TG、BET、SEM和EDS对催化剂进行了表征。研究了催化剂对乙酰水杨酸合成反应的催化活性,并比较了常规加热和微波加热方式对反应的影响。通过单因素试验确定了较佳工艺条件为：乙酸酐与水杨酸物质的量比为1.5∶1,催化剂用量为水杨酸质量的5.8%,反应时间25 min,反应温度76～80℃。常规加热条件下收率82.1%,使用5次后,收率仍保持在78.2%。碳基固体酸催化剂在常规加热条件下催化性能和重复使用性能均优于微波加热条件反应。
이정분화대갑분광산위원료합성료탄기고체산최화제,병채용FTIR、TG、BET、SEM화EDS대최화제진행료표정。연구료최화제대을선수양산합성반응적최화활성,병비교료상규가열화미파가열방식대반응적영향。통과단인소시험학정료교가공예조건위：을산항여수양산물질적량비위1.5∶1,최화제용량위수양산질량적5.8%,반응시간25 min,반응온도76～80℃。상규가열조건하수솔82.1%,사용5차후,수솔잉보지재78.2%。탄기고체산최화제재상규가열조건하최화성능화중복사용성능균우우미파가열조건반응。
Carbon-based solid acid catalysts synthesized from starch andp-toluene sulphonic acid were characterized by FTIR, TG, BET, SEM and EDS. Its catalytic activity and effect of conventional heat and microwave heat on yield of acetylsalicylic acid were studied. The better condition was determined with single factor tests, which is as follows： the molar ratio of acetic anhydride to salicylic acid was 1.5 ： 1, the weight ratio of carbon-based solid acid to salicylic acid was 5.8%, acylation reaction temperature was 76--80 ~C, reaction time was 25 min under conventional heat. The yield of acetylsalicylic acid was 82.1% and kept 78.2% after used five times under conventional heat. The carbon-based solid acid catalyst has high catalytic activity and retrievability under conventional heat, which are better than that of microwave heat.