Paper Title:
Alkylation of Benzene with Ethanol on Zeolites Modified with La2O3
  Abstract

Alkylation of benzene with ethanol for synthesis of ethylbenzene was performed over parent zeolites and zeolites modified with La2O3, such as HMCM-22, HBeta and nano HZSM-5 in a fixed-bed reactor at CO2 flow. The properties of zeolites and catalysts were characterized by XRD, BET and NH3-TPD. The results indicated that zeolite catalysts modified with La2O3 showed high conversion of benzene and high selectivity of ethylbenzene, i.e., 25 % conversion of benzene and 92.72% selectivity of ehtylbenzene over 3%La2O3-HZSM-5(Si/Al=200) respectively. The high selectivity of ethylbenzene is attributed to the proper acid property of modified HZSM-5, and it can be concluded that acid properties is the main factor to affect on this Alkylation. In addition, the deactivation obviously restricted over 5%La2O3-HMCM-22 and 3%La2O3-HZSM-5(Si/Al=200) on time on-stream of reaction, due to enhancement of anti-coking capability and hydrothermal stability after modification.

  Info
Periodical
Advanced Materials Research (Volumes 347-353)
Chapter
Chapter 9: Energy Chemical Engineering
Edited by
Weiguo Pan, Jianxing Ren and Yongguang Li
Pages
3670-3676
DOI
10.4028/www.scientific.net/AMR.347-353.3670
Citation
J. H. Li, Y. N. Wang, J. He, Z. R. Zhu, "Alkylation of Benzene with Ethanol on Zeolites Modified with La2O3", Advanced Materials Research, Vols. 347-353, pp. 3670-3676, 2012
Online since
October 2011
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Price
$32.00
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