skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Equilibrium surface composition of sulfuric acid films in contact with various atmospheric gases (HNO{sub 3}, CO{sub 2}, CH{sub 2}O, Cl{sub 2}, NO, NO{sub 2})

Abstract

Differentially pumped X-ray photoelectron spectroscopy has been used to study the surface composition of sulfuric acid (H{sub 2}SO{sub 4}) and sulfuric acid/water mixtures in equilibrium with various atmospheric species. Nitric acid uptake in sulfuric acid solutions was observed below {approx}220 K. Compared to the theoretically predicted bulk composition, a significant enrichment of nitrogen was observed at the interface. The uptake of background water in sulfuric acid below 200 K was responsible for the reversible uptake of CO{sub 2}, moderated through the formation of carbonic acid (H{sub 2}CO{sub 3}). For CH{sub 2}O, Cl{sub 2}, NO, and NO{sub 2}, no observable surface species were observed over the temperature range studied ({approx}180--298 K).

Authors:
;
Publication Date:
Research Org.:
Univ. of California, Berkeley, CA (US)
Sponsoring Org.:
National Science Foundation (NSF); USDOE
OSTI Identifier:
20075906
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical
Additional Journal Information:
Journal Volume: 104; Journal Issue: 19; Other Information: PBD: 18 May 2000; Journal ID: ISSN 1089-5647
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ATMOSPHERIC CHEMISTRY; SULFURIC ACID; FILMS; NITRIC ACID; CARBON DIOXIDE; FORMALDEHYDE; CHLORINE; PHOTOELECTRON SPECTROSCOPY; NITROGEN OXIDES

Citation Formats

Fairbrother, D.H., and Somorjai, G.A. Equilibrium surface composition of sulfuric acid films in contact with various atmospheric gases (HNO{sub 3}, CO{sub 2}, CH{sub 2}O, Cl{sub 2}, NO, NO{sub 2}). United States: N. p., 2000. Web. doi:10.1021/jp992889f.
Fairbrother, D.H., & Somorjai, G.A. Equilibrium surface composition of sulfuric acid films in contact with various atmospheric gases (HNO{sub 3}, CO{sub 2}, CH{sub 2}O, Cl{sub 2}, NO, NO{sub 2}). United States. doi:10.1021/jp992889f.
Fairbrother, D.H., and Somorjai, G.A. Thu . "Equilibrium surface composition of sulfuric acid films in contact with various atmospheric gases (HNO{sub 3}, CO{sub 2}, CH{sub 2}O, Cl{sub 2}, NO, NO{sub 2})". United States. doi:10.1021/jp992889f.
@article{osti_20075906,
title = {Equilibrium surface composition of sulfuric acid films in contact with various atmospheric gases (HNO{sub 3}, CO{sub 2}, CH{sub 2}O, Cl{sub 2}, NO, NO{sub 2})},
author = {Fairbrother, D.H. and Somorjai, G.A.},
abstractNote = {Differentially pumped X-ray photoelectron spectroscopy has been used to study the surface composition of sulfuric acid (H{sub 2}SO{sub 4}) and sulfuric acid/water mixtures in equilibrium with various atmospheric species. Nitric acid uptake in sulfuric acid solutions was observed below {approx}220 K. Compared to the theoretically predicted bulk composition, a significant enrichment of nitrogen was observed at the interface. The uptake of background water in sulfuric acid below 200 K was responsible for the reversible uptake of CO{sub 2}, moderated through the formation of carbonic acid (H{sub 2}CO{sub 3}). For CH{sub 2}O, Cl{sub 2}, NO, and NO{sub 2}, no observable surface species were observed over the temperature range studied ({approx}180--298 K).},
doi = {10.1021/jp992889f},
journal = {Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical},
issn = {1089-5647},
number = 19,
volume = 104,
place = {United States},
year = {2000},
month = {5}
}