| 陈同云,张学富,胡克良.低温陈化粉煤灰负载SO42-/ZrO2固体超强酸的制备与表征[J].分子催化,2005,(3):218-221,i003 |
| 低温陈化粉煤灰负载SO42-/ZrO2固体超强酸的制备与表征 |
| The preparation and the Characterization of Fly Ash Loading SO42-/ZrO2 Solid Superacid Aged at Low Temperature |
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| DOI： |
| 中文关键词: 低温陈化 粉煤灰负载 固体超强酸 |
| 英文关键词:Ageing at Low Temperature,Fly Ash Loading,Solid Superacid |
| 基金项目:安徽省教育厅自然科学基金 |
| 陈同云 张学富 胡克良 |
| [1]安徽工业大学化学与化工学院,安徽马鞍山243002 [2]中国科学技术大学结构分析中心,安徽合肥230026 |
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| 中文摘要: |
| 固体超强酸的研制是近二十年来催化领域中的热点研究课题之一。尤其是近几年，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，常以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，但所获得的催化剂的催化活性尚不能令人满意，催化剂的储存稳定性和重复使用性能方面也还存在一些问题，以致于使其推广应用受到了限制。为了解决这些问题， |
| 英文摘要: |
| The fly ash loading SO_4~(2-)/ZrO_(2)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 and XPS. The samples were used in the esterification between lactic acid and n-butyl alcohol. The results show that the sample aged at low temperature have better performance comparing with others samples aged at room temperature, the absorption peak of S=O bond in IR spectra has been strengthened remarkably; The peak position of Zr3d in XPS speetra have a bigger chemical shift. The process of ageing at low temperature is responsible for the stronger acidity and higher activity of FZ samples. |
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