| 一种新催化体系的构建及其催化活性研究 |
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| 引用本文： | 王敏,蒋炳英,尚宏利,桑雪梅,谢家庆.一种新催化体系的构建及其催化活性研究[J].化学工程,2013(4):57-61. |
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| 作者姓名： | 王敏 蒋炳英 尚宏利 桑雪梅 谢家庆 |
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| 作者单位： | 重庆理工大学化学化工学院 |
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| 基金项目： | 国家自然科学基金资助项目(21173274) |
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| 摘 要： | 用一种配体(5,5,7,12,12,14-六甲基-1,4,8,11-四氮杂环十四烷-N'-乙酸)和镧离子(Ⅲ)构建了一种新的催化体系,并用于催化对硝基苯酚磷酸二酯(BNPP)水解裂解。利用紫外-可见分光光度法研究了BNPP的催化水解的动力学。实验结果表明:这种新催化体系与其他相似的镧离子体系相比表现出更高的活性、水溶性和稳定性,在这一体系作用下,BNPP催化水解的速率比其自水解的速率提高了107倍左右。光谱分析表明,催化体系的活性物种是由镧离子和配体构成的大环配合物。
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| 关 键 词： | 新催化体系 构建 催化活性 BNPP水解 |
Construction and catalytic activity of a new catalytic system |
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| WANG Min,JIANG Bing-ying,SHANG Hong-li,SANG Xue-mei,XIE Jia-qing.Construction and catalytic activity of a new catalytic system[J].Chemical Engineering,2013(4):57-61. |
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| Authors: | WANG Min JIANG Bing-ying SHANG Hong-li SANG Xue-mei XIE Jia-qing |
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| Affiliation: | (College of Chemistry and Chemical Engineering,Chongqing University of Technology,Chongqing 400054,China) |
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| Abstract: | A new catalytic system containing a ligand(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclo-tetradecane-N′-acetic acid) and lanthanum(Ⅲ) was constructed and used as the catalyst of the hydrolysis of bis(4-nitrophenyl) phosphate ester(BNPP).The kinetics of BNPP catalytic hydrolysis was investigated by UV-VIS method.The results indicate that this catalytic system shows greater catalytic activity,better water-solubility and stability than other similar lanthanum(Ⅲ) systems.The catalytic rate of the BNPP hydrolysis is about 107-fold faster than that of its spontaneous hydrolysis under the same conditions.The spectral analysis shows that the real active species is the macrocyclic complex of La(Ⅲ) in BNPP catalytic hydrolysis. |
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| Keywords: | new catalytic system construction catalytic activity BNPP hydrolysis |
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