| Keggin型有机膦钨杂多酸的制备、结构表征和酸量的电位滴定法测定 |
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| 引用本文： | 陈静蓉,傅相锴,李龙芹,马学兵. Keggin型有机膦钨杂多酸的制备、结构表征和酸量的电位滴定法测定[J]. 西南师范大学学报(自然科学版), 2001, 26(2): 179-182 |
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| 作者姓名： | 陈静蓉 傅相锴 李龙芹 马学兵 |
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| 作者单位： | 西南师范大学化学化工学院, |
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| 摘 要： | 首次以2-氨乙基膦酸及其N-取代物为配位中心，制得一系列有机膦钨杂多酸.由IR光谱、重量分析、扫描电镜能谱分析和C，H，N元素分析相结合确定该系列杂多酸一级结构均为Keggin结构，通式为R
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| 关 键 词： | 2－氨乙基膦酸 N－取代物 有机膦钨多酸 Keggin结构 酸量 电位滴定法 催化剂 结构表征 |
| 文章编号： | 1000-5471(2001)02-0179-04 |
| 修稿时间： | 2000-07-17 |
Preparation Characterization and Acid Number Measurement by the Potentiometric Titration Method for the Keggin Type Organo-phosphorus-heteropolytungstic Acids |
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| LI Long-qin. Preparation Characterization and Acid Number Measurement by the Potentiometric Titration Method for the Keggin Type Organo-phosphorus-heteropolytungstic Acids[J]. Journal of southwest china normal university(natural science edition), 2001, 26(2): 179-182 |
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| Authors: | LI Long-qin |
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| Abstract: | The organo-phosphorus-heteropolytungstic acids with 2 -amminoethylphosphonic acids and its N-substituded derivatives as the coordina te center were synthesized and characterized by IR, weight analysis ，scanning e lectron microscope and enegy-dispersive X-ray analysis,elemental analysis, for the first time. The results show that the five of organo-phosphorus-heteropol ytungstic acids possess Keggin type structure. Their general formula is R2R 1N+CH2CH2PO3H-*W12O36*nH2O(R R1H;RCH3, R1H; RH,R1n-C4H9;RH,R1i-C3H7;RR1CH3). Th eir acid number in the aqueous solution was measured by the potentiometric titration meth od. Especially,the effect of the N-substituents on the acid number of the organ o-phosphorus-heteropolytungstic acids in the water was also studied and discus sed. |
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| Keywords: | amminoethylphosphonic acid N substituted derivatives organo phosphorus heteropolytungstic acid Keggin type structure acid number potentiometric titration |
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