化学与生物工程
化學與生物工程
화학여생물공정
CHEMISTRY & BIOENGINEERING
2014年
11期
45-48
,共4页
乙酰水杨酸%微波合成%动力学
乙酰水楊痠%微波閤成%動力學
을선수양산%미파합성%동역학
acetylsalicylic acid%microwave synthesis%kinetics
采用微波辐射法合成了乙酰水杨酸，考察了反应时间、辐射功率、pH 值、反应底物比（水杨酸与乙酸类衍生物的物质的量比）等因素对反应的影响，并研究了反应动力学。确定最佳反应条件为：反应时间70 s、辐射功率450 W、pH 值5.4、反应底物比1∶2，推算了宏观动力学方程并计算得到表观反应活化能为75.60 kJ·mol－1。
採用微波輻射法閤成瞭乙酰水楊痠，攷察瞭反應時間、輻射功率、pH 值、反應底物比（水楊痠與乙痠類衍生物的物質的量比）等因素對反應的影響，併研究瞭反應動力學。確定最佳反應條件為：反應時間70 s、輻射功率450 W、pH 值5.4、反應底物比1∶2，推算瞭宏觀動力學方程併計算得到錶觀反應活化能為75.60 kJ·mol－1。
채용미파복사법합성료을선수양산，고찰료반응시간、복사공솔、pH 치、반응저물비（수양산여을산류연생물적물질적량비）등인소대반응적영향，병연구료반응동역학。학정최가반응조건위：반응시간70 s、복사공솔450 W、pH 치5.4、반응저물비1∶2，추산료굉관동역학방정병계산득도표관반응활화능위75.60 kJ·mol－1。
Acetylsalicylic acid was synthesized by microwave irradiation.The effect of several factors,such as reaction time,irradiation power,pH value and reactant ratio(molar ratio of salicylic acid to acetic acid deriva-tive)on reaction were investigated,and reaction kinetics was studied.The optimal conditions were obtained as follows:reaction time of 70 s,irradiation power of 450 W,pH value of 5.4,reactant ratio of 1∶2.The kinetics e-quation was obtained and Arrhenius activation energy was 75.60 kJ·mol-1 .
