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- W2371129120 abstract "The compound K 15 H 2 [Ce (P 2W 15 Mo 2O 61 ) 2] was found to be an efficient environmentally friendly catalyst for the two step synthesis of allantoin: first oxidation of glyoxal by hydrogen peroxide and final condensation of carbamide with glyoxalic acid. The first step reaction was conducted at 3～8 ℃ for 6 h at a molar ratio of 1 0∶1 1 of glyoxal to hydrogen peroxide. The second step reaction was run at 75 ℃ and 0 25 g of the catalyst was used per molar glyoxal. Under the optimum conditions the yield is 27 22%." @default.
- W2371129120 created "2016-06-24" @default.
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- W2371129120 date "2002-01-01" @default.
- W2371129120 modified "2023-09-25" @default.
- W2371129120 title "STUDY ON SYNTHESIS OF ALLANTOIN USING HETEROPOLY COMPOUND AS CATALYST" @default.
- W2371129120 hasPublicationYear "2002" @default.
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