HPWA/SBA-15催化合成2-叔丁基对甲酚  

Synthesis of t-butyl-p-cresol with Supported HPWA/SBA-15 Catalyst

作　　者：吴冰[1] 沈健[1] 李会鹏[1] 冯健 

机构地区：[1]辽宁石油化工大学,辽宁抚顺113001 [2]中国石油辽河石化分公司延迟焦化车间,辽宁盘锦124022

出　　处：《化学工业与工程》2008年第4期306-309,共4页Chemical Industry and Engineering

摘　　要：以SBA-15负载磷钨酸(HPWA)为催化剂,甲基叔丁基醚(MTBE)和对甲酚为原料,在小型固定床反应器上进行了合成2-叔丁基对甲酚的试验研究,试验考察了HPWA负载量、反应温度、反应空速及原料配比对反应转化率、选择性的影响。试验结果表明,经HPWA改性后SBA-15的酸性增强,对甲酚转化率增大。适宜的反应条件为,反应温度160℃,HPWA负载量40%,空速3.0 h-1,原料MTBE和甲酚摩尔比为1.5。在适宜的条件下,对甲酚的转化率65.87%,2-叔丁基对甲酚的选择性97.81%。SBA-15 molecular sieve modified by HPWA were prepared and used to sythesize 2-t-butyl-p-cresol by the alkylation of p-cresol with MTBE. The catalytic performances of the catalysts were studied in a micro- reactor. The influences of the content of hydrofluoric acid, reaction temperature, space velocity and tool ratio of MTBE to p-cresol on the conversion and the selectivity were analyzed. The results showed that the increasing conversion was attributed to the increase of acidity. The optimum conditions were： phosphotungstic acid is 40%, 160 ℃ and the space velocity is 3.0 h^-1 , mol ratio of MTBE to p-cresol is 1.5. The conversion of p-cresol was 65.87%, and the selectivity of 2-t-butyl-p-cresol was 97.81%

关 键 词：SBA-15分子筛 磷钨酸 对甲酚 烷基化 2-叔丁基对甲酚 

分 类 号：TQ243.11[化学工程—有机化工]