摘要
邻叔丁基对苯二酚（ＴＢＨＱ）具有高效、低毒、热稳定性好的优点。为解决 ＴＢＨＱ生产收率低、质量差、工艺复杂的问题，实验研究了以叔丁醇和对苯二酚为原料合成邻叔丁基对苯二酚的主要工艺参数。结果表明，常压下以叔丁醇和对苯二酚为原料合成邻叔丁基对苯二酚，叔丁醇的过量系数为１３０％时，以８５％的浓磷酸为催化剂、在１３０℃的温度下反应５—６ｈ，采用重结晶法精制工艺，可以制备出纯度为９９．１％的邻叔丁基对苯二酚，而且产品收率可达７０％以上。
Main technical parameters for synthesis of 2-tert-butylphenol (TBHQ) from tert-butyl alcohol and hydroquinone were investigated in this paper. The results showed that TBHQ with purity of 99.1% and recovery more than 70% was synthesized from tert-butyl al-cohol and hydroquinone under atmospheric pressure, when excess ratio of tert-butyl alcohol was 130% and the reaction was catalyzed by 85% H3PO4 for 5-6 hours. Re-crystallization was adapted to purify the synthesis product.
出处
《黑龙江科技学院学报》
CAS
2001年第4期38-41,共4页
Journal of Heilongjiang Institute of Science and Technology
关键词
邻叔丁基对苯二酚
对苯二酚
叔丁醇
合成
净化
食品抗氧剂
tert-butylhydroquinone
hydroquinone
tert-butyl alcohol
synthesis and purification
antioxidants
