Electron-triggered chemistry in HNO3/H2O complexes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00473612" target="_blank" >RIV/61388955:_____/17:00473612 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1039/C7CP01205E" target="_blank" >http://dx.doi.org/10.1039/C7CP01205E</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/C7CP01205E" target="_blank" >10.1039/C7CP01205E</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electron-triggered chemistry in HNO3/H2O complexes

Popis výsledku v původním jazyce

Polar stratospheric clouds, which consist mainly of nitric acid containing ice particles, play a pivotal role in stratospheric chemistry. We investigate mixed nitric acid-water clusters (HNO3)(m)( H2O)(n), m approximate to 1-6, n approximate to 1-15, in a laboratory molecular beam experiment using electron attachment and mass spectrometry and interpret our experiments using DFT calculations. The reactions are triggered by the attachment of free electrons (0-14 eV) which leads to subsequent intracluster ion-molecule reactions. In these reactions, the nitrate anion NO3- turns out to play the central role. This contradicts the electron attachment to the gas-phase HNO3 molecule, which leads almost exclusively to NO2-. The nitrate containing clusters are formed through at least three different reaction pathways and represent terminal product ions in the reaction cascade initiated by the electron attachment. Besides, the complex reaction pathways represent a new hitherto unrecognized source of atmospherically important OH and HONO molecules.

Název v anglickém jazyce

Electron-triggered chemistry in HNO3/H2O complexes

Popis výsledku anglicky

Polar stratospheric clouds, which consist mainly of nitric acid containing ice particles, play a pivotal role in stratospheric chemistry. We investigate mixed nitric acid-water clusters (HNO3)(m)( H2O)(n), m approximate to 1-6, n approximate to 1-15, in a laboratory molecular beam experiment using electron attachment and mass spectrometry and interpret our experiments using DFT calculations. The reactions are triggered by the attachment of free electrons (0-14 eV) which leads to subsequent intracluster ion-molecule reactions. In these reactions, the nitrate anion NO3- turns out to play the central role. This contradicts the electron attachment to the gas-phase HNO3 molecule, which leads almost exclusively to NO2-. The nitrate containing clusters are formed through at least three different reaction pathways and represent terminal product ions in the reaction cascade initiated by the electron attachment. Besides, the complex reaction pathways represent a new hitherto unrecognized source of atmospherically important OH and HONO molecules.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA15-12386S" target="_blank" >GA15-12386S: Dynamika a (foto)chemie polutantů na rozhraních led/vzduch a voda/vzduch z experimentu i teorie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

—

Svazek periodika

19

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

11753-11758

Kód UT WoS článku

000401640600004

EID výsledku v databázi Scopus

2-s2.0-85024499713