杂多阴离子柱撑类水滑石的合成、表征及催化研究

郑建华; 庞海霞; 王长杰; 姜燕冬; 赵军丽; 贾云龙

杂多阴离子柱撑类水滑石的合成、表征及催化研究

中国地质大学材料科学与化学工程学院, 湖北武汉 430074

详细信息

作者简介:
郑建华(1954-), 女, 副教授, 主要从事有机化学的研究.E-mail: phx2001253@163.com

中图分类号: P619.2
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- 被引次数: 0
出版历程
- 收稿日期: 2003-09-23
- 刊出日期: 2004-03-25

Study on Synthesis, Characterization and Catalysis of Heteropolyanion Pillared Hydrotalcite-Like Compounds

Faculty of Material Science and Chemical Engineering, China University of Geosciences, Wuhan 430074, China

摘要

摘要: 采用共沉淀法合成了具有不同组成的类水滑石层状化合物和杂多酸, 并以此制备了一系列杂多阴离子柱撑类水滑石; 用XRD和IR方法对柱撑产物的结构进行了表征, 它们具有K结构; 结果表明这些材料层间高度为0.97nm.并且发现以H₂O₂为氧化剂的这种层柱催化剂在液-固相中对苯甲醛氧化成苯甲酸具有很高的活性和选择性.
- 杂多阴离子 /
- 类水滑石 /
- 制备 /
- 苯甲醛 /
- H₂O₂氧化
Abstract: Hydrotalcite-like compounds, heteropolyanions with different compositions, and their pillared products were synthesized by coprecipitation. The structures were characterized by XRD and IR with Keggin structure. The results indicated that these materials possess exceptionally well-ordered gallery height of 0.97 nm. It is found that this kind of pillared layered catalyst has high activity and selectivity for the oxidation of benzaldehyde to benzoic acid using H₂O₂ as oxidant in liquid-solid phase system.
- heteropolyanion /
- hydrotalcite-like compound /
- preparation /
- benzaldehyde /
- H₂O₂ oxidation

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图 1 Zn₂Al-TA的XRD谱图

Fig. 1. XRD patterns of Zn₂Al-TA

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图 2 PZW₁₁的IR谱图

(1)PCoW₁₁;(2)PNiW₁₁;(3)PCuW₁₁

Fig. 2. IR spectra of PZW₁₁

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图 3 Zn₂Al-PZW₁₁的XRD谱图

Fig. 3. X-ray diffraction patterns of Zn₂Al-PZW₁₁

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图 4 Zn₂Al-PZW₁₁的IR谱图

Fig. 4. IR spectra of Zn₂Al-PZW₁₁

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表 1 Zn₂Al-A^n-的d(003)实验值与预想值比较

Table 1. Comparison of expected with observed d(003)spacings of Zn₂Al-A^n- having various anions

表 2 Zn₂Al-PZW₁₁的IR光谱数据

Table 2. IR data of Zn₂Al-PZW₁₁ cm^-1

表 3 Zn₂Al-PZW₁₁对苯甲醛的H₂O₂氧化催化活性

Table 3. Catalytic activity of Zn₂Al-PZW₁₁ for oxidation of benzaldehyde to benzoic acid using H₂O₂ as oxidant

参考文献(16)

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