摘要
采用浸渍法制备了Ce-SBA-15介孔分子筛,并用XRD、N_2吸附-脱附、NH_3-TPD分析方法对试样进行了表征。结果表明,试样仍保持SAB-15介孔分子筛的介孔特征,Ce改性增加了催化剂酸量和酸强度。在小型固定床反应器上进行了苯酚甲醇烷基化反应,考察了温度、醇酚比、空速对反应的影响。结果表明:Ce-SBA-15具有较好的催化性能,在反应温度460℃、醇酚比4、空速3h^(-1)条件下,苯酚的转化率为66.89%,甲酚的选择性为90.43%。
Ce-SBA-15 prepared by dipping with different content of Ce was characterized by XRD,N2 adsorption-desorption,NH3-TPD.The results showed that the modified zeolite over Ce increased both the strength and the number of the surface acids especially the number of the strong acid.The reaction in a fixed-bed reactor was investigated at the different content of Ce,reaction temperature,methanol/ phenol(molar ratio),and WHSV.The results indicated that at the reaction conditions of the content of Ce was 15%,460℃,methanol/phenol(molar ratio)was 4,WHSV was 3h-1,alkylation showed the best performance and the conversation of phenol was 66.89%,the selectivity of cresol was 90.43%.
作者
李艳歌
王俊丰
党迎喜
沈健
丁洪生
Li Yange;Wang Junfeng;Dang Yingxi;Shen Jian;Ding Hongsheng(College of Petrochemical Technology ,Liaoning Shihua University,Fushun 113001,Liaoning,China)
出处
《精细石油化工》
CAS
CSCD
北大核心
2018年第6期12-16,共5页
Speciality Petrochemicals
关键词
苯酚
甲醇
烷基化
甲酚
介孔分子筛
phenol
methanol
alkylation
cresol
meson molecular sieve
作者简介
李艳歌(1992-),女,硕士在读。E-mail:1343789624@qq.com;通信联系人,丁洪生,E-mail:412128550@qq.com。
