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ժҪ �Ʊ��Keggin�ṹ�͹��(LaHSiW12O40)��ϴ߻��,��FT-IR��Դ߻��˽ṹ��Ըô߻��߻��ϳɱ��ᶡ��Ϊ̽�뷴Ӧ,��˷�Ӧ��ȡ��߻��Ӧʱ�估�߻��ظ�ʹ��ܶԴ߻��Ե�Ӱ��,�о��,�ô߻��Դ߻��ᶡ��ĺϳɾ��нϸߵĴ߻��,ͬʱ�ô߻��Ʊ��,��ظ�ʹ��õ��ŵ㡣�ڽϼ��,��ᶡ��ʿɴ�80.0%��ϡ�

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�ؼ���� ϴ߻�� Keggin�ṹ ��ᶡ�� ߻��

Abstract�� A new environmental Keggin catalyst,LaHPSiW_(12)O_(40),was prepared and characterized by FT-IR.Esterification of nbutyl alcohol with propionic acid catalyzed by the catalyst was chosen as probe reaction,effects of n-butyl alcohol/propionic acid mol ratio,catalyst amount,reaction time and catalyst reusability on catalytic activity were investigated.Experiment showed that the catalyst had high catalytic activity for synthesis of n-butyl propionate,its synthesis was convenient and had good reusability.Under optimized conditions,yield of n-butyl propionate can be over 80.0%.

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Received 2006-03-15; published 2006-03-15

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��л�;�µ��;��ά��;��;��`;.��縴�ϴ߻��ϳɱ��ᶡ��[J]. ��ѧ��ҵ�빤��, 2006,23(2): 114-116

XU Zhao-hui~1,CHEN De-kai~1,LIAO Wei-lin~2,LIU De-yong~2,WANG Sheng~1.Synthesis of n-Butyl Propionate Catalyzed by LaHSiW_(12)O_(40)[J]. Chemcial Industry and Engineering, 2006,23(2): 114-116