モデル星間分子を用いた衝撃反応とその宇宙化学的意義

使用模型星际分子的冲击反应及其宇宙化学意义

• 批准号: 13740314
• 负责人: 三村 耕一
• 金额: $ 1.34万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13740314/
• 关键词: 衝撃反応; 有機物; 隕石; フェナントレン

フェナントレン,ピレン,フルオランセンの3種類の有機物からなる混合物を出発物質として衝撃反応を行い,生成物をガスクロマトグラフィー,ガスクロマトグラフ質量分析計ならびに元素分析計で分析した.これらの有機物は隕石中に検出されているとともに,星間分子や星間塵中に存在が強く示唆されている有機物である.実験の結果,衝撃を被った試料は、反応を免れた出発物質,それ以外の芳香族炭化水素(PAHs),無定形炭素を含んでいた.これらのPAHs(出発物質の二量体の存在度が最も大きかった)や無定形炭素は衝撃波が出発物質に作用した結果,生成したものである.衝撃を被った試料と衝撃圧力の関係をまとめると以下のようになる.1.衝撃を被った試料の炭素元素に対する水素元素(H/C)比は衝撃圧力の増加に伴って減少する,2.衝撃を被った試料のPAHs量は25GPaまで増加するがその後急激に減少する,3.衝撃を被った試料中の反応を免れた出発物質量は27GPaまで徐々に減少するがその後急激に減少する.これらの結果をもとに,衝撃反応の反応機構を考察すると,衝撃反応は出発物質が水素を放出してより水素に乏しい物質に変化する脱水素反応であることが判った.さらに,2つの出発物質分子から1つの水素分子が抜けて二量体が生成する付加反応が優勢な反応であることも判った.これらのことにより,有機物を含む隕石が衝突現象を経験した際,27GPa以下の衝撃圧力の時には出発物質が生き残り,15GPa以下の衝撃圧力の時には存在した有機物組成がほとんど変化しないことが示唆された.

In the first place, we need to know that the mixture of organic materials, such as organic materials, has a negative impact on the quality of the products, and that the products are in good agreement with each other. This is not true. There is a strong incentive in the presence of molecules in the interstellar molecules to abet the presence of organic substances in the rocks. The results of the experiment showed that the compounds were extracted from the raw materials, the compounds were removed, the aromatic carbonized water (PAHs) was not found, and the amorphous carbons were found to contain phenols. The amorphous carbon wave of PAHs (the highest degree of existence of two-dimensional body) produces the result of the effect of mass action, and generates the result of the experiment. The following is the best news in the world. 1. The carbon element, carbon element, water element (Hmax C) is less than the carbon element, carbon element, water element, water element, carbon element, carbon element, water element, water element, carbon element, carbon element, water element, water element, carbon element, carbon element, water element, water element, carbon element, water element, water element, carbon element, carbon element, water element, water element, carbon element, carbon element, water element, water element, carbon element, carbon element, water element, water element After being told that the PAHs was measured by the 25GPa, and then added, there was an urgent need for less information, 3. In the material, there is no need to measure the amount of material, 27GPa, slow, slow, low, low and low. The results showed that the anti-dehydration mechanism was responsible for the determination of water content, the release of water, the depletion of water, the chemical reaction of dehydration and the determination of dehydration. In the second half of the year, you can find out that the molecules of water molecules, water molecules, water molecules and water molecules. If there is any damage caused by the equipment, the equipment may cause damage due to the impact of the equipment, the equipment below the 27GPa will cause damage in time, and the equipment under the 15GPa will cause damage during the period of time, and the equipment will be set up to cause the accident.