| Synthesis of Mono-esters of Phenyl-and Substituted Phenylphosphonic Acids and Their Performance in Rare Earth Extraction |
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| 作者姓名： | 沈定璋 严金英 袁承业 |
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| 作者单位： | Shanghai Institute of Organic Chemistry.Academia Sinica Shanghai 200032，China，Shanghai Institute of Organic Chemistry.Academia Sinica，Shanghai 200032，China，Shanghai Institute of Organic Chemistry.Academia Sinica，Shanghai 200032，China |
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| 基金项目： | supported by the National Natural Science Foundation of China |
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| 摘 要： | Methodsfor the synthesis of acidic phenyl-and substituted phenylphosphonates bearing a branched longchain ester alkyl group are described.These synthetic routes are incomparably superior to other methods in vari-ous aspects including better reaction yield and higher purity of the product.The behaviour of themono(2-butyloctyl)esters and mono(2-methyldodecyl)esters of both phenyl-and o-methylphenylphosphonicacids thus obtained in extraction of lanthanum,praseodymium,neodymium and lutecium as representatives oflight and heavy rare earths,is investigated and discussed on the basis of their chemical structure.The dependenceof the extraction constants and separation factors accords with the Reactivity-Selectivity Principle in solvent ex-traction proposed by us.The composition and structure of the extracted species have been characterized byinfra-red and proton nuclear magnetic resonance spectroscopy in addition to elemental analyses.
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Synthesis of Mono-esters of Phenyl-and Substituted Phenylphosphonic Acids and Their Performance in Rare Earth Extraction |
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| Shen Ding-Zhang Yan Jin-Ying Yuan Cheng-Ye.Synthesis of Mono-esters of Phenyl-and Substituted Phenylphosphonic Acids and Their Performance in Rare Earth Extraction[J].Journal of Rare Earths,1991(2). |
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| Authors: | Shen Ding-Zhang Yan Jin-Ying Yuan Cheng-Ye |
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| Abstract: | Methodsfor the synthesis of acidic phenyl-and substituted phenylphosphonates bearing a branched long chain ester alkyl group are described.These synthetic routes are incomparably superior to other methods in vari- ous aspects including better reaction yield and higher purity of the product.The behaviour of the mono(2-butyloctyl)esters and mono(2-methyldodecyl)esters of both phenyl-and o-methylphenylphosphonic acids thus obtained in extraction of lanthanum,praseodymium,neodymium and lutecium as representatives of light and heavy rare earths,is investigated and discussed on the basis of their chemical structure.The dependence of the extraction constants and separation factors accords with the Reactivity-Selectivity Principle in solvent ex- traction proposed by us.The composition and structure of the extracted species have been characterized by infra-red and proton nuclear magnetic resonance spectroscopy in addition to elemental analyses. |
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| Keywords: | Synthesis of mono-ester Extraction of RE La Pr Nd Lu Spectra of IR and NMR |
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