Quantum diffusion controlled chemistry: the H + NO reaction

Balabanoff, Morgan E.

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https://hdl.handle.net/2142/91372 Copy

Description

Title

Quantum diffusion controlled chemistry: the H + NO reaction

Author(s)

Balabanoff, Morgan E.

Contributor(s)

Anderson, David T.

Issue Date

2016-06-20

Keyword(s)

Matrix isolation (and droplets)

Abstract

In this study, we present Fourier transform infrared spectroscopic studies of the 193 nm photochemistry of nitric oxide (NO) isolated in a parahydrogen (pH$_{2}$) matrix over the 1.7 to 4.3 K temperature range. Back in 2003 Fushitani and Momose\footnote{M. Fushitani, T. Momose, \textit{Low Temp. Phys. }\textbf{29}, 985-988 (2003).} showed that hydrogen atoms (H atoms) are produced as by-products of the 193 nm photo-initiated reactions of NO trapped in solid pH$_{2}$. We recently published\footnote{M. Ruzi, D.T. Anderson, \textit{J. Phys. Chem. A }\textbf{119}, 12270-12283 (2015).} a further study on the same NO/pH$_{2}$ system where we showed that H atom reactions with NO produce both HNO and NOH even though the reaction that forms HNO is barrierless and the reaction that forms NOH has a sizeable barrier. Further, we measured the reaction kinetics at 1.8 K and 4.3 K and showed the rate constants follow an Arrhenius-behavior with a small activation energy (\textit{E}$_{a}$=2.39(1) \wn). In the present studies we are continuing this work using a $^{15}$NO enriched sample and are focusing on how we can adjust the experimental conditions to increase the yield of both the HNO/NOH reaction products. We are also performing kinetic experiments at more than just two temperatures to better characterize the temperature dependence of the extracted rate constants. We are conducting these additional experiments to benchmark the reaction kinetics for the H + NO reaction in solid pH$_{2}$ to better understand what factors influence the rates of these low temperature chemical reactions.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

En

Permalink

http://hdl.handle.net/2142/91372

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Copyright 2016 by the authors

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