Carbonic acid in the gas phase and its astrophysical relevance

被引:111
作者
Hage, W [1 ]
Liedl, KR [1 ]
Hallbrucker, A [1 ]
Mayer, E [1 ]
机构
[1] Univ Innsbruck, Inst Allgemeine Anorgan & Theoret Chem, A-6020 Innsbruck, Austria
关键词
D O I
10.1126/science.279.5355.1332
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In outer space, high-energy irradiation of cryogenic ice mixtures of abundant water and carbon dioxide is expected to form solid carbonic acid, Experiments and thermodynamic analyses show that crystalline carbonic acid sublimates without decomposition. Free-energy considerations based on highly accurate molecular quantum mechanics, in combination With vapor pressures resulting from experimental sublimation rates, suggest that in the gas phase, a monomer and dimer of carbonic acid are in equilibrium, comparable to that of formic acid. Gaseous carbonic acid could be present in comets, an Mars and outer solar system bodies, in interstellar icy grains, and in Earth's upper atmosphere.
引用
收藏
页码:1332 / 1335
页数:4
相关论文
共 54 条
[1]  
[Anonymous], 1984, J INCLUSION PHENOM, DOI DOI 10.1007/BF00663261
[2]   Solar modulation of cosmogenic nuclide production over the last millennium: comparison between C-14 and Be-10 records [J].
Bard, E ;
Raisbeck, GM ;
Yiou, F ;
Jouzel, J .
EARTH AND PLANETARY SCIENCE LETTERS, 1997, 150 (3-4) :453-462
[3]  
BEER J, 1992, NATO ASI SER, V12, P141
[4]   THE RAMAN-SPECTRA OF GASEOUS FORMIC ACID-H2 AND FORMIC ACID-D2 [J].
BERTIE, JE ;
MICHAELIAN, KH .
JOURNAL OF CHEMICAL PHYSICS, 1982, 76 (02) :886-894
[5]   CLATHRATE HYDRATE FORMATION IN AMORPHOUS COMETARY ICE ANALOGS INVACUO [J].
BLAKE, D ;
ALLAMANDOLA, L ;
SANDFORD, S ;
HUDGINS, D ;
FREUND, F .
SCIENCE, 1991, 254 (5031) :548-551
[6]   Carbonic acid by ion implantation in water/carbon dioxide ice mixtures [J].
Brucato, JR ;
Palumbo, ME ;
Strazzulla, G .
ICARUS, 1997, 125 (01) :135-144
[7]   EVIDENCE FOR ENHANCED BE-10 DEPOSITION IN MEDITERRANEAN SEDIMENTS 35-KYR BP [J].
CASTAGNOLI, GC ;
ALBRECHT, A ;
BEER, J ;
BONINO, G ;
SHEN, C ;
CALLEGARI, E ;
TARICCO, C ;
DITTRICHHANNEN, B ;
KUBIK, P ;
SUTER, M ;
ZHU, GM .
GEOPHYSICAL RESEARCH LETTERS, 1995, 22 (06) :707-710
[8]   AN ANALYSIS OF THE INFRARED AND RAMAN-SPECTRA OF THE FORMIC-ACID DIMER (HCOOH)2 [J].
CHANG, YT ;
YAMAGUCHI, Y ;
MILLER, WH ;
SCHAEFER, HF .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (24) :7245-7253
[9]   INFRARED-EMISSION BY ORGANIC GRAINS IN THE COMA OF COMET HALLEY [J].
CHYBA, C ;
SAGAN, C .
NATURE, 1987, 330 (6146) :350-353
[10]   INFRARED SOUNDING OF COMET HALLEY FROM VEGA-1 [J].
COMBES, M ;
MOROZ, VI ;
CRIFO, JF ;
LAMARRE, JM ;
CHARRA, J ;
SANKO, NF ;
SOUFFLOT, A ;
BIBRING, JP ;
CAZES, S ;
CORON, N ;
CROVISIER, J ;
EMERICH, C ;
ENCRENAZ, T ;
GISPERT, R ;
GRIGORYEV, AV ;
GUYOT, G ;
KRASNOPOLSKY, VA ;
NIKOLSKY, YV ;
ROCARD, F .
NATURE, 1986, 321 (6067) :266-268