HPWA/USY催化合成2,4-二叔丁基苯酚  

Synthesis of 2,4-di-tert-butyl phenol with phosphowolframic acid/ultrastable Y catalyst

作　　者：王志刚[1] 沈健[1] 秦如意[2] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]中国石化洛阳石油化工工程公司,河南洛阳471003

出　　处：《石化技术与应用》2012年第1期19-22,共4页Petrochemical Technology & Application

摘　　要：在超稳分子筛(USY)负载磷钨酸(HPWA)催化剂存在下,以苯酚和叔丁醇为反应物,在小型钢制密闭反应釜中合成出2,4-二叔丁基苯酚(2,4-DTBP),研究了HPWA负载量、反应温度、反应时间和反应物配比对苯酚转化率和2,4-DTBP选择性的影响。结果表明,负载HPWA后USY的酸性增强,苯酚转化率增大;使用HPWA负载质量分数为5%的HPWA/USY催化剂,在反应温度为200℃,反应时间为4 h,n(叔丁醇)/n(苯酚)为2的最佳工艺条件下,苯酚转化率为90.44%,2,4-DTBP选择性为84.12%。2,4 - di - tert - butyl phenol （ 2,4 - DTBP） was sythesized with phenol and tertiary buta- nol as feedstock in the presence of ultrastable Y （ USY ） modified by phosphowolframic acid （ I-IP- WA） catalyst in a steel - made micro - reactor. The effects of HPWA loading amount, reaction temperature ,reaction time and feedstock ratio on the phenol conversion and 2,4 - DTBP selectivity were inves- tigeted. The results showed that after supported HP- WA, both of USY acidity and phenol conversion were increased. And under the optimal condition of mass fraction of HPWA/USY catalyst 5% , reaction temperature 200 ℃, reaction time 4h, mole ratio of tertiary butanol to phenol 2, the conversion of phenol and the selectivity of 2,4 - DTBP reached 90.44% and 84.12% , respectively.

关 键 词：2  4-二叔丁基苯酚 HPWA/USY催化剂 磷钨酸 超稳分子筛 苯酚 叔丁醇 

分 类 号：TQ243.1[化学工程—有机化工]