Hydrocarbon synthesis in cometary grains

被引：6
|
作者：
Llorca, J
机构：
[1] Inst Estudis Espacias Cataluya, Ediff Nexus, Barcelona 08034, Spain
[2] Univ Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Spain
来源：
PHYSICS AND CHEMISTRY OF THE EARTH PART C-SOLAR-TERRESTIAL AND PLANETARY SCIENCE | 1999年 / 24卷 / 05期
关键词：
D O I：
10.1016/S1464-1917(99)00097-5
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Light-weight straight-chain saturated and insaturated hydrocarbons in the C-1-C-5 range are formed when model material of cometary metal-containing silicate grains, similar to those present in chondritic porous interplanetary dust particles, are allowed to react with gas of variable composition (H-2, CO, NH3, H2S) at 5 x 10(-4) atm and 423-523 K. Methyl and methylene species dominate the infrared spectra in the 3.0-4.0 mu m region. Gas-grain CO hydrogenation reactions may represent a plausible explanation for the formation of hydrocarbons as well as other organics in comets. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：591 / 595
页数：5
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