文献类型：期刊文献

中文题名：SO_4^(2-)/ZrO_2催化剂上异丁烯叠合反应的研究

英文题名：Isobutene oligomerization over SO_4^(2-)/ZrO_2 catalysts

作者：牛嘉宇[1];宋月芹[1];赵基钢[1];周晓龙[1];葛跃娜[1]

机构：[1]华东理工大学石油加工研究所,上海200237

年份：2018

卷号：38

期号：11

起止页码：163

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

语种：中文

中文关键词：SO4^2-/ZrO2;催化剂;异丁烯;叠合反应

外文关键词：SO4^2-/ZrO2;catalyst;isobutene;oligomerization

摘要：固体超强酸SO_4^(2-)/ZrO_2(SZ)可以在低温下催化异丁烯的叠合反应。采用沉淀浸渍法制备了SO_4^(2-)/ZrO_2(SZ)催化剂。考察了液固浸渍质量比和浸渍硫酸浓度对SZ催化异丁烯叠合的影响,并采用XRD、NH_3-TPD、TG手段表征了催化剂的晶相结构、酸量和酸强度。结果表明,浸渍液固质量比对SZ催化异丁烯叠合生成分子质量为250~500的聚异丁烯有显著影响,当液固质量比为1时,产物中五聚体及以上的选择性最大。降低硫酸浓度提高了强酸中心数量和单斜晶相比例,使生成异丁烯五聚体以上的性能大大改善。
Isobutene oligomerization can be catalyzed by solid superacid SO4^（2-）/ZrO2（SZ） at low temperature. A series of SO4^（2-）/ZrO2（SZ） catalyst samples are prepared through direct precipitation impregnation method.The effects of liquid/solid impregnation ratio and concentration of sulfuric acid on SZ＇s catalytic performance are studied.The crystalline structure,acid amount and acid strength of the catalysts are characterized by XRD,NH3-TPD and TG.The results indicate that the liquid/solid impregnation ratio has a significant effect on the performance of SZ catalysts in catalyzing isobutene oligomerization.The resulting product has the highest pentamer selectivity when the liquid solid impregnation is 1.Strong acid center amount and monoclinic phase within the catalyst can be increased by lowing the concentration of sulfuric acid,which leads to great improvement of isobutene oligomerization performance of SZ catalysts.