Interaction of hydrazine and ammonia with TiO2

Chih Chung Chuang; Jau Shiang Shiu; Jong Liang Lin

doi:10.1039/b001389g

Interaction of hydrazine and ammonia with TiO₂

Chih Chung Chuang, Jau Shiang Shiu, Jong Liang Lin

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

Adsorption and reaction of N₂H₄ and NH₃ on powdered TiO₂ have been studied by Fourier-transformed infrared spectroscopy. N₂H₄ decomposes on the surface to form NH₃ and surface hydroxy groups at temperatures higher than ~ 150°C. Based on these findings, a N₂H₄ reaction pathway on TiO₂ is established to be N₂H₄ → 2NH₂ → NH + NH₃ and NH + O((1)) → N + OH((ads)). NH₃ decomposes on the surface and forms adsorbed azide N(3(ads)) species at temperatures higher than ~ 350°C. Photooxidation of NH₃ and ND₃ is investigated as well and the mechanism is discussed in terms of the NH₂ reaction pathway and recent reports for the reactions between NH(x) and NO(x) (x = 1-2) in the gas phase.

Original language	English
Pages (from-to)	2629-2633
Number of pages	5
Journal	Physical Chemistry Chemical Physics
Volume	2
Issue number	11
DOIs	https://doi.org/10.1039/b001389g
Publication status	Published - 2000 Jun 1

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "Interaction of hydrazine and ammonia with TiO2",

abstract = "Adsorption and reaction of N2H4 and NH3 on powdered TiO2 have been studied by Fourier-transformed infrared spectroscopy. N2H4 decomposes on the surface to form NH3 and surface hydroxy groups at temperatures higher than ~ 150°C. Based on these findings, a N2H4 reaction pathway on TiO2 is established to be N2H4 → 2NH2 → NH + NH3 and NH + O((1)) → N + OH((ads)). NH3 decomposes on the surface and forms adsorbed azide N(3(ads)) species at temperatures higher than ~ 350°C. Photooxidation of NH3 and ND3 is investigated as well and the mechanism is discussed in terms of the NH2 reaction pathway and recent reports for the reactions between NH(x) and NO(x) (x = 1-2) in the gas phase.",

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T1 - Interaction of hydrazine and ammonia with TiO2

AU - Chuang, Chih Chung

AU - Shiu, Jau Shiang

AU - Lin, Jong Liang

PY - 2000/6/1

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N2 - Adsorption and reaction of N2H4 and NH3 on powdered TiO2 have been studied by Fourier-transformed infrared spectroscopy. N2H4 decomposes on the surface to form NH3 and surface hydroxy groups at temperatures higher than ~ 150°C. Based on these findings, a N2H4 reaction pathway on TiO2 is established to be N2H4 → 2NH2 → NH + NH3 and NH + O((1)) → N + OH((ads)). NH3 decomposes on the surface and forms adsorbed azide N(3(ads)) species at temperatures higher than ~ 350°C. Photooxidation of NH3 and ND3 is investigated as well and the mechanism is discussed in terms of the NH2 reaction pathway and recent reports for the reactions between NH(x) and NO(x) (x = 1-2) in the gas phase.

AB - Adsorption and reaction of N2H4 and NH3 on powdered TiO2 have been studied by Fourier-transformed infrared spectroscopy. N2H4 decomposes on the surface to form NH3 and surface hydroxy groups at temperatures higher than ~ 150°C. Based on these findings, a N2H4 reaction pathway on TiO2 is established to be N2H4 → 2NH2 → NH + NH3 and NH + O((1)) → N + OH((ads)). NH3 decomposes on the surface and forms adsorbed azide N(3(ads)) species at temperatures higher than ~ 350°C. Photooxidation of NH3 and ND3 is investigated as well and the mechanism is discussed in terms of the NH2 reaction pathway and recent reports for the reactions between NH(x) and NO(x) (x = 1-2) in the gas phase.

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Interaction of hydrazine and ammonia with TiO₂

Abstract

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