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�ؼ���� ѻ��Ӧ �һ��嶡��(ETBE)

Abstract�� The structure and surface acidity of three kinds of niobic acid(the washed niobic acid,niobic acid treated with nitric acid,niobic acid treated with nitric acid and phosphoric acid) were studied by XRD,BET and TG/DTG.The catalytic activity of niobic acid treated with nitric acid and phosphoric acid in the synthesis of ethyl tert-butyl ether(ETBE) had been studied.The experimental results indicated that,the treated niobic acid has the better performance and stability.The optimal condition of etherification reaction are as follows:reaction temperature 130 ��,mole ratio of alcohol to tert-butyl 2��1,reaction time 3.0 h, catalyst amount used for raw material 9.10%(weight ratio).

Keywords��

Received 2009-01-15; published 2009-01-15

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���;��;.�ᴦ��߻��ϳ��һ��嶡��[J]. ��ѧ��ҵ�빤��, 2009,26(1): 32-35

LI Chun-jing,SHEN Jian.Synthesis of Ethyl Tert-butyl Ether by Niobic Acid[J]. Chemcial Industry and Engineering, 2009,26(1): 32-35

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