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ժҪ ��֦��ۺϼ��,�ԷǶԳƾ۱�ϩ��(PAN)��ĤΪ��Ĥ,��Ҷ��Ѽ׻��ϩ��(MePEO300MA)Ϊ��ӵ��,�Ʊ��˷��͸��͸��Ĥ��˵��Ũ�Ⱥ��䷴Ӧʱ��Ը��Ĥ�ױ�/��͸��ܵ�Ӱ��,��Ը��Ĥ��ʯ��ͷ��,�Ż��ϩ�ѽ�ԭ�Ͻ��˳��̽��о��,��Ĥ�Լױ��Ϊ20%�ļױ�/��(80��)�ķ��ϵ��ﵽ5.6,��͸ͨ��Ϊ2.47 kg/(m2.h);��и��Ϊ20%ʱ,ʯ��͵ķ��7.52%��4.11%,��45%,��˵��͸��Ĥ�ڽ��ʯ��͵ķ��,�Ż��ϩ�ѽ�ԭ�Ϸ��Ӧ��ǰ��

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Abstract�� The composite membranes were prepared by the UV induced graft-filling polymerization method for the pervaporation separation of aromatic/aliphatic mixtures.The asymmetric poly(acrylonitrile)(PAN) ultrafiltration membranes were used as the substrate,which were grafted with poly(ethylene glycol) methyl ether methacrylate(MePEO300MA).The impact of preparation parameters(monomer concentration and UV irradiation time) was analyzed using PV separation of toluene/heptane mixtures.High selectivities(��_(toluene/heptane)=5.6) and high permeate fluxes(J=2.47 kg��m~(-2)��h~(-1)) were achieved.The aromatic concentration of naphtha decreased with increasing stage cut.At the stage cut of 20%,an approximate 45% reduction of aromatics in the naphtha was obtained,i.e.,from 7.52% to 4.11%,which showed the feasibility of the ethylene feed upgrading by PV aromatic removal from naphtha.

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Received 2010-03-15; published 2010-03-15

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��սʤ;��;�Š�;��;��;.��͸��͸��Ĥ��Ʊ��о�[J]. ��ѧ��ҵ�빤��, 2010,27(2): 177-182

LI Zhan-sheng,GUO Chun-gang,ZHANG Ben,LI Yang,WANG Yu-rong.Preparation of Aromatic-Selective Composite Membranes and their Pervaporation Performances[J]. Chemcial Industry and Engineering, 2010,27(2): 177-182

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