- Method for manufacturing ammonia-N
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PROBLEM TO BE SOLVED: To provide a method for producing an N-alkyl hydroxylamine, which produces a pure N-alkyl hydroxylamine in a high yield under a mild condition by a simple method, does not require a strict time management and is advantageous for industrial-scale production. SOLUTION: The method for producing an N-alkyl hydroxylamine includes bringing an N-alkyl nitro compound into contact with a hydrogen source in the presence of a solid catalyst supporting palladium on silica and in the absence of a significant quantity of a fourth reaction component. The method for producing an N-alkyl hydroxylamine includes bringing (A) an N-alkyl nitro compound into contact only with (B) a hydrogen source and (C) a solid catalyst supporting palladium on silica, or bringing (A) an N-alkyl nitro compound into contact only with (B) a hydrogen source, (C) a solid catalyst supporting palladium on silica and (D) a solvent that does not deactivate catalytic activity and has a pKa of ≥12. COPYRIGHT: (C)2012,JPOandINPIT
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Paragraph 0095; 0098
(2018/12/01)
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- Selective synthesis of N-Alkyl hydroxylamines by hydrogenation of nitroalkanes using supported palladium catalysts
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The selective hydrogenation of nitroalkanes to the corresponding N-alkyl hydroxylamines is achieved at room temperature with excellent yields (up to 98 %), by using common supported palladium catalysts. The reaction temperature is key to the highly selective formation of the hydroxylamines, which proceeds smoothly in a H2 atmosphere without additives. The catalyst can be recycled up to five times.
- Takenaka, Yasumasa,Kiyosu, Takahiro,Choi, Jun-Chul,Sakakura, Toshiyasu,Yasuda, Hiroyuki
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experimental part
p. 1166 - 1168
(2011/12/02)
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- The influence of preliminary treatment of Pt-Rh catalysts on their activity in transformations of nitroethane
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The electrochemical reduction of nitroethane on electrochemically deposited Pt-Rh catalysts subjected to preliminary treatment under different conditions has been studied.The greatest increase in the specific activity of the electrochemical reduction as a result of the treatment is observed for rhodium and its alloys.
- Grishina, T. M.,Meshcheryakova, E. V.
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p. 727 - 729
(2007/10/02)
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- Catalytic Hydrogenation of Nitroethane at a Regulated Potential in the Presence of Palladium-Rhodium Catalysts
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The influence of the potential on the rate, mechanism, and composition of the products of the catalytic hydrogenation of nitroethane in the presence of palladium-rhodium catalysts has been investigated.It is shown that, at a potential of 0.5 V, the reaction product is only ethylhydroxylamine.
- Grishina, T. M.,Lebedeva, O. K.,Vovchenko, G. D.
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p. 304 - 305
(2007/10/02)
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