精细石油化工
精細石油化工
정세석유화공
SPECIALITY PETROCHEMICALS
2001年
3期
22-24
,共3页
蔡可迎%杨爱华%翟富民%魏贤勇
蔡可迎%楊愛華%翟富民%魏賢勇
채가영%양애화%적부민%위현용
2,5-二叔丁基对苯二酚%甲基叔丁基醚%对苯二酚%烷基化%合成
2,5-二叔丁基對苯二酚%甲基叔丁基醚%對苯二酚%烷基化%閤成
2,5-이숙정기대분이분%갑기숙정기미%대분이분%완기화%합성
研究了以对苯二酚和甲基叔丁基醚(MTBE)为原料,以酸性阳离子交换树脂为催化剂合成2,5二叔丁基对苯二酚(DBHQ)。用正交试验法,得到合成DBHQ的适宜工艺条件为：n(MTBE)∶n(对苯二酚)=3∶1,m(催化剂)∶m(对苯二酚)=0.6∶1,反应时间为7～8 h,反应温度为80 ℃,连续分出甲醇。在此条件下产物中的DBHQ质量分数可达91.9%。
研究瞭以對苯二酚和甲基叔丁基醚(MTBE)為原料,以痠性暘離子交換樹脂為催化劑閤成2,5二叔丁基對苯二酚(DBHQ)。用正交試驗法,得到閤成DBHQ的適宜工藝條件為：n(MTBE)∶n(對苯二酚)=3∶1,m(催化劑)∶m(對苯二酚)=0.6∶1,反應時間為7～8 h,反應溫度為80 ℃,連續分齣甲醇。在此條件下產物中的DBHQ質量分數可達91.9%。
연구료이대분이분화갑기숙정기미(MTBE)위원료,이산성양리자교환수지위최화제합성2,5이숙정기대분이분(DBHQ)。용정교시험법,득도합성DBHQ적괄의공예조건위：n(MTBE)∶n(대분이분)=3∶1,m(최화제)∶m(대분이분)=0.6∶1,반응시간위7～8 h,반응온도위80 ℃,련속분출갑순。재차조건하산물중적DBHQ질량분수가체91.9%。
Synthesis of 2,5-di-tert-butylhydroquinone by alkylation of hydroquinone with methyl tertbutyl ether (MTBE) was studied. The effects of reaction time, reaction temperature and solvents on the yield of 2,5-di-tert-butylhydroquinone were also investigated. Under the optimum conditions: the reaction temperature about 80 ℃, the reaction time 7～8 h, n(MTBE)∶n(hydroquinone)=3∶1, m(catalyst)∶m(hydroquinone)=0.6∶1, the content of 2,5ditertbutylhydroquinone in the product reached 91.9%. Because of its high yield and mild conditions, this method is convenient for preparing 2,5-di-tert-butylhydroquinone and prospective in industrial application.
