甲苯与叔丁醇在Fe2O3/HM催化剂上的烷基化反应Alkylation of Toluene with tert-Butyl Alcohol over Fe2O3/HM Catalyst
罗娟,周志伟,武文良,陈强,王军
摘要(Abstract)：
以HM沸石分子筛负载Fe2O3作为催化剂,在100mL高压釜反应器中进行了甲苯与叔丁醇的烷基化反应。考察了不同Fe2O3负载量对甲苯与叔丁醇烷基化反应的影响,并用XRD、NH3-TPD和TG等手段对几种负载型催化剂的物化性质进行了表征。当Fe2O3的负载量为18%时,Fe2O3仍在HM表面高度分散,催化剂焙烧温度为650℃时,对叔丁基甲苯的选择性最高,为80.6%,叔丁基甲苯的选择性达到100%。采用18%Fe2O3/HM作为催化剂,研究了各种反应条件对催化剂性能的影响。实验结果发现,在适宜的反应条件下,即反应温度180℃,反应时间3h,叔丁醇与甲苯摩尔比为3,初始压力1.0MPa,原料与催化剂质量比为5,溶剂与甲苯摩尔比为8时,甲苯的转化率为36.6%,对叔丁基甲苯的选择性为78.4%。
关键词(KeyWords)： 甲苯;叔丁醇;烷基化;对叔丁基甲苯
基金项目(Foundation):
作者(Author): 罗娟,周志伟,武文良,陈强,王军
参考文献(References)：
- [1]Anand B,Halgeri,Jagannath Das.Recent advances in selectivation of zeolites for para-disubstituted aromatics[J].Catalysis Today,2002,73(1-2):65-73.
- [2]Perego C,Amarilli S,Carati A et al.Mesoporous silica-aluminas as catalysts for the alkylation of aromatic hydrocarbons with olefins[J].Microporous Mater,1999,27(2-3):345-354.
- [3]TANG Ai-shu(唐霭淑),SHEN De-long(沈德隆),ZHOU Cheng-fang(周成方)et al.Studies on p-tert-butyltoluene synthesis(对叔丁基甲苯的合成研究)[J].Zhejiang Chem(浙江化工),1993,24(4):6-8.
- [4]XU Li-xin(许立信),YIN Jin-hua(尹进华),CHEN Xue-xi(陈学玺).Progress in environmentally friendly chemical process of heterogeneous catalysts(环境友好的多相催化工艺研究进展)[J].Petrochemical Technology&Application(石化技术与应用),2003,21(6):444-447.
- [5]Kumari Vasanthy B,Palanichamy M,Krishnasamy V.Side chain alkylation of toluene with isopropanol and methanol over alkali exchanged zeolites[J].Appl Catal A,1996,148(1):51-61.
- [6]PAN Lü-rang(潘履让),TANG Xiang-hai(唐祥海),ZHU Rui-zhi(朱瑞之)et al.Study on the performance of zeolite type catalyst for the synthesis of isopropyltoluenes from toluene and propene(分子筛催化甲苯丙烯合成异丙基甲苯)[J].Petrochemical Technology(石油化工),1999,28(9):579-582.
- [7]Kaeding W W,Chu W,Young L B et al.Selective alkylation of toluene with methanol to produce para-xylene[J].J Catal,1981,67(1):159-174.
- [8]Mravec D,Zavadan P,Kaszonyi A et al.Tert-Butylation of toluene over zeolite catalysts[J].Appl Catal A,2004,257(1):49-55.
- [9]Sebastian C P,Shivanand P,Sharanappa N et al.Regio selective butylation of toluene on mordenite catalysts influence of acidity[J].J Mol Catal A:Chem,2004,223(1-2):305-311.
- [10]ZHOU Zhi-wei(周志伟),WU Wen-liang(武文良),LUO Juan(罗娟)et al.Alkylation of toluene with tert-butyl alcohol over mordenite catalyst(丝光沸石催化剂催化甲苯与叔丁醇的烷基化反应)[J].Petrochemical Technology(石油化工),2006,35(1):79-83.
- [11]ZHU Shu(朱庶),MENG Xian-ping(孟宪平),WANG Ying-xia(王颖霞)et al.The interaction between Sb2O3and HZSM-5(Sb2O3与HZSM-5的相互作用)[J].Chemical Journal of Chinese Universities(高等学校化学学报),1999,20(4):616-619.
- [12]ZOU Wei(邹薇),YANG De-qin(杨德琴),ZHU Zhi-rong(朱志荣)et al.Methylation of toluene with methanol over metal oxide-modified HZSM-5catalysts(金属氧化物改性的HZSM-5上甲苯与甲醇的烷基化反应)[J].Chinese Journal of Catalysis(催化学报),2005,26(6):470-474.
- [13]WU Wen-liang(武文良),YU Qing-yue(于清跃),WANG Jun(王军)et al.Isopropylation of naphthalene over catalyst PW/C(活性炭负载磷钨酸催化剂上萘的异丙基化)[J].J Chem Eng of Chinese Univ(高校化学工程学报),2004,18(5):601-605.
- [14]LIU Hua-dao(刘华道),CAO Yi(曹毅),ZHU Jian-hua(朱建华)et al.Catalytic degradation of n-nitrosopyrrolidine over Fe2O3-modified NaY zeolite(Fe2O3改性NaY沸石上吡咯烷亚硝胺的降解)[J].Chinese Journal of Catalysis(催化学报),2003,24(7):499-504.