| 低温陈化法制备SO_4~(2-)/WO_3-TiO_2固体超强酸及性能研究 |
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| 引用本文： | 陈同云,郑明东,胡克良.低温陈化法制备SO_4~(2-)/WO_3-TiO_2固体超强酸及性能研究[J].无机化学学报,2004(8). |
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| 作者姓名： | 陈同云 郑明东 胡克良 |
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| 作者单位： | 安徽工业大学化学与化工学院 马鞍山243002
(陈同云，郑明东)，中国科学技术大学结构分析中心 合肥230026(胡克良) |
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| 基金项目： | 安徽省教育厅自然科学基金资助项目(No.2003kj053)。 |
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| 摘 要： | 0引言固体超强酸的研制是近20年来催化领域中的热点研究课题之一。起初,人们所研制的SO42-/MxOy型固体超强酸中,MxOy多为ZrO2。近年来,研究者们为得到高酸强度和高催化活性的固体超强酸催化剂,以ZrO2为主体,引入第二组分、第三组分组成复合型催化剂,这方面的研究者颇多1~4],也
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| 关 键 词： | 低温陈化 固体超强酸 |
Preparation and Characteriztion of Solid SuperacidSO_4~(2-)/WO_3-TiO_2 Aged at Low Temperature |
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| CHEN Tong-Yun, ZHENG Ming-Dong HU Ke-Liang.Preparation and Characteriztion of Solid SuperacidSO_4~(2-)/WO_3-TiO_2 Aged at Low Temperature[J].Chinese Journal of Inorganic Chemistry,2004(8). |
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| Authors: | CHEN Tong-Yun ZHENG Ming-Dong HU Ke-Liang |
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| Institution: | CHEN Tong-Yun*,1 ZHENG Ming-Dong1 HU Ke-Liang2 |
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| Abstract: | The SO42-/WO3-TiO2 solid superacid samples have been prepared by ageing at low temperature. The acidity of samples were determined with flowing indicator method, and the characterization of the samples were performed by IR, XPS and XRD. The samples were used in the esterification of acetic acid and glycerol. The results show that the sample aged at low temperature have better performance comparing with other samples aged at normal temperature, the flexible vibration peak of S=O bond has been strengthened remarkably in IR spectra. The peak position of W4f have a higher chemical shift in XPS patterns. The diffraction peaks of tetragonal and orthographic phase of WO3 are stronger in XRD patterns. The process of ageing at low temperature is responsible for the stronger acidity and higher activity of SWT samples. |
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| Keywords: | low temperature ageing solid superacid |
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