| 稀土钼杂多配合物催化合成尿囊素的研究 |
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| 引用本文： | 许利闽,许美羡,韩艺娟. 稀土钼杂多配合物催化合成尿囊素的研究[J]. 稀土, 2005, 26(4): 6-9 |
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| 作者姓名： | 许利闽 许美羡 韩艺娟 |
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| 作者单位： | 福建师范大学,化学系,福建,福州,350007 |
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| 基金项目： | 福建省教育厅重点资助项目(JA0416) |
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| 摘 要： | 合成制备了稀土钼杂多配合物K11[Y(PMo11O39)2],并以之作为催化剂,双氧水为氧化剂,乙二醛和尿素为原料合成尿囊素。探讨研究了催化剂量、反应温度、反应时间及n(C2H2O2)∶n(H2O2)对尿囊素收率的影响。得到了适宜的合成条件为:n(C2H2O2)∶n(H2O2)=1.0∶1.1,氧化反应温度约为5℃~8℃,尿囊素生成温度约为75℃~80℃,反应时间7小时,在该条件下尿囊素的收率可达28.75%。
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| 关 键 词： | 钇-钼杂多配合物 催化 合成 尿囊素 |
| 文章编号： | 1004-0277(2005)04-0006-04 |
| 修稿时间： | 2003-04-02 |
Study on Synthesis of Allantoin by Using Molybdoneodymium Heteropoly Compound Catalyst |
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| XU Li-min,XU Mei-xian,HAN Yi-juan. Study on Synthesis of Allantoin by Using Molybdoneodymium Heteropoly Compound Catalyst[J]. Chinese Rare Earths, 2005, 26(4): 6-9 |
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| Authors: | XU Li-min XU Mei-xian HAN Yi-juan |
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| Abstract: | The molybdoneodymium heteropoly compound K_(11)[Y(PMo_(11)O_(39))_2] was synthesized and used as catalyst in the synthesis of glyoxal by hydrogen peroxide and condensation of urea from allantoin . Effects of catalyst,temperature,time and n(C_2H_2O_2)n(H_2O_2) on the yield of allantoin were studied.The obtained optimal synthesizing conditions are as follows:n(C_2H_2O_2) n(H_2O_2)=1.01.1, temperature 58,7580 and reaction time (7h.) Under such conditions the yield of allantoin is 28.75%. |
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| Keywords: | yttrium heteopoly compelx glyoxal hydrogen peroxide carbamide allantoin |
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