Identification and yield of carbonic acid and formaldehyde in irradiated ices
Carbonic acid, (OH)2CO, was tentatively identified in the IR spectrum of a proton irradiated CO2 + H2O ice mixture. In this report, we present additional evidence for a more definitive identification of (OH)2CO with (1) the infrared spectrum of a residue obtained by proton irradiation of CO2 + D2O i...
Main Authors: | , , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
1993
|
Subjects: | |
Online Access: | http://ntrs.nasa.gov/search.jsp?R=19930049238 |
id |
ftnasantrs:oai:casi.ntrs.nasa.gov:19930049238 |
---|---|
record_format |
openpolar |
spelling |
ftnasantrs:oai:casi.ntrs.nasa.gov:19930049238 2023-05-15T15:52:29+02:00 Identification and yield of carbonic acid and formaldehyde in irradiated ices Dellorusso, Neil Khanna, R. K. Moore, M. H. Unclassified, Unlimited, Publicly available March 25, 1993 http://ntrs.nasa.gov/search.jsp?R=19930049238 unknown http://ntrs.nasa.gov/search.jsp?R=19930049238 Accession ID: 93A33235 Copyright Other Sources 91 Journal of Geophysical Research; 98; E3; p. 5505-5510. 1993 ftnasantrs 2012-02-15T20:06:20Z Carbonic acid, (OH)2CO, was tentatively identified in the IR spectrum of a proton irradiated CO2 + H2O ice mixture. In this report, we present additional evidence for a more definitive identification of (OH)2CO with (1) the infrared spectrum of a residue obtained by proton irradiation of CO2 + D2O ice mixture, and (2) the IR spectra of solid phases of formaldehyde (H2CO), acetone (CH3)2CO, and dimethyl carbonate (OCH3)2CO, which are structurally similar to (OH)2CO. IR characteristics (peak frequencies and complex refractive indices of the compounds in point 2) are also reported. In particular, the integrated absorption coefficients for the C-O band for the compounds in point 2 do not vary by more than 20 percent. Based on these values, we estimate the yields of H2CO and (OH)2CO by proton irradiation or ice mixtures. Both H2CO and (OH)2CO are possible irradiation products of cometary and planetary ices. Other/Unknown Material Carbonic acid NASA Technical Reports Server (NTRS) |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
91 |
spellingShingle |
91 Dellorusso, Neil Khanna, R. K. Moore, M. H. Identification and yield of carbonic acid and formaldehyde in irradiated ices |
topic_facet |
91 |
description |
Carbonic acid, (OH)2CO, was tentatively identified in the IR spectrum of a proton irradiated CO2 + H2O ice mixture. In this report, we present additional evidence for a more definitive identification of (OH)2CO with (1) the infrared spectrum of a residue obtained by proton irradiation of CO2 + D2O ice mixture, and (2) the IR spectra of solid phases of formaldehyde (H2CO), acetone (CH3)2CO, and dimethyl carbonate (OCH3)2CO, which are structurally similar to (OH)2CO. IR characteristics (peak frequencies and complex refractive indices of the compounds in point 2) are also reported. In particular, the integrated absorption coefficients for the C-O band for the compounds in point 2 do not vary by more than 20 percent. Based on these values, we estimate the yields of H2CO and (OH)2CO by proton irradiation or ice mixtures. Both H2CO and (OH)2CO are possible irradiation products of cometary and planetary ices. |
format |
Other/Unknown Material |
author |
Dellorusso, Neil Khanna, R. K. Moore, M. H. |
author_facet |
Dellorusso, Neil Khanna, R. K. Moore, M. H. |
author_sort |
Dellorusso, Neil |
title |
Identification and yield of carbonic acid and formaldehyde in irradiated ices |
title_short |
Identification and yield of carbonic acid and formaldehyde in irradiated ices |
title_full |
Identification and yield of carbonic acid and formaldehyde in irradiated ices |
title_fullStr |
Identification and yield of carbonic acid and formaldehyde in irradiated ices |
title_full_unstemmed |
Identification and yield of carbonic acid and formaldehyde in irradiated ices |
title_sort |
identification and yield of carbonic acid and formaldehyde in irradiated ices |
publishDate |
1993 |
url |
http://ntrs.nasa.gov/search.jsp?R=19930049238 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19930049238 Accession ID: 93A33235 |
op_rights |
Copyright |
_version_ |
1766387649000505344 |