极低温下甲醛反应以及彗星和星际冰中有机分子的积累。

Very low temperature formaldehyde reactions and the build-up of organic molecules in comets and interstellar ices.

作者信息

Schutte W A, Allamandola L J, Sandford S A

机构信息

NASA/Ames Research Center, Moffett Field, CA 94035, USA.

出版信息

Adv Space Res. 1995 Mar;15(3):401-6. doi: 10.1016/s0273-1177(99)80110-0.

DOI:10.1016/s0273-1177(99)80110-0

PMID:11539253

Abstract

We have investigated thermally promoted reactions of formaldehyde (H2CO) in very low temperature ices. No such reactions occurred in ices of pure formaldehyde. However, addition of trace amounts of ammonia (NH3) were sufficient to catalyze reactions at temperatures as low as 40 K. Similar reactions could take place in interstellar ices and in Comets and produce considerable amounts of organic molecules.

摘要

我们研究了甲醛（H₂CO）在极低温冰中的热促进反应。在纯甲醛冰中未发生此类反应。然而，添加痕量氨（NH₃）足以催化低至40 K温度下的反应。类似反应可能在星际冰和彗星中发生，并产生大量有机分子。