Zeolite Catalysts for Removal of Trace Olefins in Aromatics

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Abstract In this study,zeolite catalysts,in which HY zeolite was used as active component and alumina gel,silica-alumina gel and titania-alumina gel as binders,were prepared for removal of trace olefin in aromatics.The effect of binders and calcination temperature on their performance and catalyst deactivation and regeneration were investigated by means of NH_3-TPD,BET and TGA.The results indicated that the catalytic activity of zeolite catalysts with any binder was superior to that of a commercial particulate clay,i.e.NC-01,which was due to more weak acidic sites on zeolite catalysts than NC-01.Carbon deposition was the main reason for zeolite catalyst deactivation,and calcinations was an effective method for catalyst regeneration,and the regenerated catalyst still showed good performance.Among the catalysts concerned,the one containing 20%(wt) silica-alumina gel and calcinated at 823 K showed better catalytic performance.

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Received 2007-05-15; published 2007-05-15

Cite this article:

CHEN Zhi-ming,CHEN Ji-xiang,ZHANG Ji-yan.Zeolite Catalysts for Removal of Trace Olefins in Aromatics[J] Chemcial Industry and Engineering, 2007,V24(3): 226-230

[1]	�Ŵ��,��,Ф��.��ѧ�뷼��[M].��:��ִ�ѧ��,2000.
[2]	STEPHEN H B,TERRY E H,ARTHUR P W.DecreasingBr-reactive contaminants:US,6 368 496[P],2002-04-09.
[3]	STEPHEN H B,TARUN K C,JOSE G S.Process for BTXpurification:US,6 500 996[P],2002-12-31.
[4]	STEPHEN H B,TERRY E H,ARTHUR P W.DecreasingBr-reactive contaminants in aromatic streams:US,6 781 023[P],2004-08-24.
[5]	��.��(��)[J].��ҵ�߻�,2002,10(3):56-62.
[6]	�ﲿ��,��Բ��,СҰ�η�,��.�¹��ͼ��߻��[M].��:��ѧ��ҵ��,1992.
[7]	WANG Yang-dong,ZHANG Ai-min,XU Qin-hua,et al.Characterization of titanium-modified USY zeolites and theircatalytic performance onn-heptane cracking[J].AppliedCatalysis A:General.2001,214:167-177
[8]	XING En-hui,MI Zhen-tao,XIN Cheng-wei,et al.Endo-to exo-isomerization of tetrahydrodicyclopentadiene catalyzedby commercially available zeolites[J].Journal of MolecularCatalysis A:Chemical,2005,231:161-167.
[9]	ERTL G,KN ZINGER H,WEITKAMP J.Handbook ofHeterogeneous Catalysis[M].Weinheim:VCHVerlagsgesellschaft,1997.
[10]	DA Z,HAN Z,MAGNOUS P,et al.Liquid-phasealkylation of toluene with long-chain alkenes over HFAU andHBEA zeolites[J].Applied Catalysis A:General.2001,219:45-52