Vapour Phase Ethylation of Benzene Over ZSM-5 Synthesized in Fluoride Medium

被引:1
|
作者
Hariharan, S. [1 ]
Palanichamy, M. [1 ]
Murugesan, V. [1 ]
机构
[1] Anna Univ, Dept Chem, Madras 600025, Tamil Nadu, India
关键词
ZSM-5; Fluoride media; Benzene; Ethylation; MOLECULAR-SIEVES; ETHYLBENZENE; SELECTIVITY; DISPROPORTIONATION; ETHANOL;
D O I
10.14233/ajchem.2013.13638
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
ZSM-5 zeolite (Si/Al ratio 50, 75 and 100) was hydrothermally synthesized in fluoride medium. Their crystal size and crystallinity were high. SEM images of synthesized material showed large elongated prismatic crystals. Their catalytic activity was examined for vapour phase ethylation of benzene between 200 and 400 degrees C. The ethylbenzene conversion was high at 300 degrees C compared with other temperatures. The selectivity of ethylbenzene was high at low ethanol content in the feed, but decreased with an increase in ethanol content. Among the diethyl benzene isomers the selectivity of p-diethyl benzene was higher than others. High selectivity of p-diethyl benzene was due to large crystal size and high crystallinity. Hence synthesis of ZSM-5 in fluoride Medium could catalyze para selective ethylation of ethylbenzene. The same catalyst could also be applied to other selective alkylations.
引用
收藏
页码:2679 / 2682
页数:4
相关论文
共 50 条
  • [1] Kinetic analysis of benzene ethylation over ZSM-5 based catalyst in a fluidized-bed reactor
    Odedairo, T.
    Al-Khattaf, S.
    CHEMICAL ENGINEERING JOURNAL, 2010, 157 (01) : 204 - 215
  • [2] HYDROCONVERSION OF BENZENE OVER ZSM-5 ZEOLITE
    SANO, T
    OKABE, K
    HAGIWARA, H
    TAKAYA, H
    SHOJI, H
    MATSUZAKI, K
    JOURNAL OF MOLECULAR CATALYSIS, 1987, 40 (01): : 113 - 117
  • [3] Alkylation of benzene with formaldehyde over ZSM-5
    Wu, XC
    Anthony, RG
    JOURNAL OF CATALYSIS, 1999, 184 (01) : 294 - 297
  • [4] PARA-SELECTIVITY OF TOLUENE ETHYLATION OVER ZSM-5 CATALYSTS
    LONYI, F
    ENGELHARDT, J
    KALLO, D
    ZEOLITES, 1991, 11 (02): : 169 - 177
  • [5] Reactor simulation of benzene ethylation and ethane dehydrogenation catalyzed by ZSM-5: A multiscale approach
    Hansen, N.
    Krishna, R.
    van Baten, J. M.
    Bell, A. T.
    Keil, F. J.
    CHEMICAL ENGINEERING SCIENCE, 2010, 65 (08) : 2472 - 2480
  • [6] The influence of alkali cations on the synthesis of ZSM-5 in fluoride medium
    Aiello, R
    Crea, F
    Nigro, E
    Testa, F
    Mostowicz, R
    Fonseca, A
    Nagy, JB
    MICROPOROUS AND MESOPOROUS MATERIALS, 1999, 28 (02) : 241 - 259
  • [7] Stability of colloidal ZSM-5 catalysts synthesized in fluoride and hydroxide media
    Nabavi, Mohammad Sadegh
    Zhou, Ming
    Mouzon, Johanne
    Grahn, Mattias
    Hedlund, Jonas
    MICROPOROUS AND MESOPOROUS MATERIALS, 2019, 278 : 167 - 174
  • [8] Catalytic conversion of methane to benzene over Mo/ZSM-5
    Wang, DJ
    Lunsford, JH
    Rosynek, MP
    TOPICS IN CATALYSIS, 1996, 3 (3-4) : 289 - 297
  • [9] Ethylation of coking benzene with ethanol over nano-sized ZSM-5 zeolites: Effects of rare earth oxides on catalyst stability
    Sun, Linping
    Guo, Xinwen
    Xiong, Guang
    Wang, Xiangsheng
    CATALYSIS COMMUNICATIONS, 2012, 25 : 18 - 21
  • [10] Mesoporous ZSM-5 synthesized by simultaneous mesostructuring and crystallization of ZSM-5 nuclei
    Goncalves, Marli Lansoni
    Dimitrov, Ljubomir D.
    Wallau, Martin
    Urquieta-Gonzalez, Ernesto A.
    SCIENTIFIC BASES FOR THE PREPARATION OF HETEROGENEOUS CATALYSTS, PROCEEDINGS OF THE 9TH INTERNATIONAL SYMPOSIUM, 2006, 162 : 323 - 330