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ժҪ �ڷ�Ӧ�¶�Ϊ673K,��״��Ħ��Ϊ1:1,��ʱ��(WHSV)Ϊ0 5h-1�ķ�Ӧ��,�о��˸��HZSM-5��ɸ�ϱ��״��Ӧ�ķ�Ӧ��ɡ��(P2O5),��(MgO),��(Sb2O3)��HZSM-5��Զ��߱��Ӽ׻��Ӧ��﷼��(Anisole+methylAnisole)��ѡ��,��ͼ׷ӺͶ��׷ӵ�ѡ��ԡ��︺��,��-�׷ӵ�ѡ��ӡ��ʶȵ��Կ��߶�-�׷ӵ�ѡ��,��Ч��:Sb2o3>P2O5>MgO��

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�ؼ���� HZSM-5��ʯ �� ׻��

Abstract�� The reaction of phenol methylation with methanol over modified HZSM-5 with P��2O��5,MgO,Sb��2O��3 was investigated at the reaction temperature of 673K,phenol/methanol(molar ratio) of 1:1,and WHSV of 0��5 h��-1��.The modification of HZSM-5 with P��2O��5,MgO,and Sb��2O��3 could increase the selectivities to anisole and methylanisole.However,it decreases the selectivities to Xylenol and Cresol in the reaction.Increasing the amount of those oxides could enhance the selectivity to o-Cresol.Moderate impregnation of those oxides could improve the selectivity to p-Cresol in the reaction and the effects had the sequence:Sb��2O��3>P��2O��5>MgO.��

Keywords��

Received 2003-09-15; published 2003-09-15

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��ɭ,��,�Ÿ�Ӣ.��HZSM-5��ɸ�ϱ��״��Ӧ[J]. ��ѧ��ҵ�빤��, 2003,20(5): 282-285

HAN Sen��1,ZHANG Kui��1,ZHANG Fu-ying��2��emical Engineering,Tianjin University,Tianjin 300072,China;��2.NanKai University Library,Tianjin 300071,China)��.Phenol Methylation with Methanol over Modified HZSM-5[J]. Chemcial Industry and Engineering, 2003,20(5): 282-285