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Issue 35, 2011
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FTIR study of ammonia formation via the successive hydrogenation of N atoms trapped in a solid N2 matrix at low temperatures

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Abstract

A Fourier transform infrared absorption spectroscopy (FTIR) study showed that NH3 was formed by the successive reaction of hydrogen atoms with nitrogen atoms in an N2 matrix at 10 K. Reactions appeared to proceed via the Langmuir–Hinshelwood mechanism because NH3 formation was not observed at 20 K. At this temperature, H atoms did not adsorb significantly onto the N2 matrix; i.e., the surface residence times were short. Furthermore, NH3 yields via the successive hydrogenation of N atoms were significant, even after H atom deposition onto the N2 matrix containing trapped N atoms onto which had been deposited a superficial pure solid N2 adlayer. This result clearly indicates that H atoms diffuse in pure solid N2 matrices at 10 K.

Graphical abstract: FTIR study of ammonia formation via the successive hydrogenation of N atoms trapped in a solid N2 matrix at low temperatures

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Publication details

The article was received on 07 Mar 2011, accepted on 23 Jun 2011 and first published on 18 Jul 2011


Article type: Paper
DOI: 10.1039/C1CP20645A
Phys. Chem. Chem. Phys., 2011,13, 15798-15802

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    FTIR study of ammonia formation via the successive hydrogenation of N atoms trapped in a solid N2 matrix at low temperatures

    H. Hidaka, M. Watanabe, A. Kouchi and N. Watanabe, Phys. Chem. Chem. Phys., 2011, 13, 15798
    DOI: 10.1039/C1CP20645A

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