Evaluation of catalytic effect of amorphous ice on the surface atomic reactions
Evaluation of catalytic effect of amorphous ice on the surface atomic reactions
批准号:
17104006
负责人:
KOUCHI Akira
金额:
$66.06万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (S)
财政年份:
2005
资助国家:
日本
项目状态:
已结题
起止时间:
2005 至 2009
中文摘要
利用新研制的实验装置,对低温下星际颗粒表面原子反应进行了实验研究。阐明了H_2、H_2O、CO_2、H_2CO和CH_3OH的生成机理。通过测量氢原子在无定形水冰上的粘附系数,可以推导出反应速率常数。我们还表明,无定形水冰增强反应性,在较高的温度下,与纯固体反应物相比。
英文摘要
Surface atomic reactions on interstellar grains at low temperatures are investigated experimentally using newly developed experimental setup. Formation mechanisms of H_2, H_2O, CO_2, H_2CO, and CH_3OH are clarified. Measurement of sticking coefficient of H-atoms onto amorphous water ice enables us to deduce reaction rate constants. We also showed that amorphous water ice enhances reactivity at higher temperatures compared with pure solid reactants.
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水素原子の表面拡散は速いか?:CO固体表面の場合
氢原子的表面扩散快吗?:CO固体表面案例
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
[木村勇気, 他]
通讯作者:
他
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
[N. Watanabe, et.al.]
通讯作者:
et.al.
Formation and Deuterium Fractionation of Organic Molecules on Grain Surfaces, Astrochemistry : Recent Successes and Current Challenges(eds.D.C.Lis, G.A.Blake, E.Herbst)
颗粒表面有机分子的形成和氘分馏,天体化学:最近的成功和当前的挑战(eds.D.C.Lis、G.A.Blake、E.Herbst)
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
[A. Kouchi, et.al., 中村 民雄, 香内晃, Naoki Watanabe]
通讯作者:
Naoki Watanabe
Structural effects of ice grain surfaces on the hydrogenation of CO at low temperatures
冰粒表面对CO低温加氢的结构影响
DOI:
--
发表时间:
2008
期刊:
Chem. Phys. Lett. 456
影响因子:
--
作者:
[Hidaka, H., Miyauchi, N., Kouchi, A., Watanabe, N]
通讯作者:
N
Catalytic effect of amorphous solid water on surface reactions of hydrogen atoms at very low temperatures
非晶固体水在极低温度下对氢原子表面反应的催化作用
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
[N. Watanabe, et.al.]
通讯作者:
et.al.
共 63 条
Observation of surface structure of amorphous ice and role of amorphous ice in surface atomic reactions at low temperatures
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批准号:22340157
-
项目类别:Grant-in-Aid for Scientific Research (B)
-
资助金额:$12.56万
-
财政年份:2010
-
负责人:KOUCHI Akira
-
依托单位:
UV-induced diamond formation in interstellar clouds
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批准号:15340180
-
项目类别:Grant-in-Aid for Scientific Research (B)
-
资助金额:$10.82万
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财政年份:2003
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负责人:KOUCHI Akira
-
依托单位:
Collisional sticking of organic grains in the solar nebula
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批准号:12440142
-
项目类别:Grant-in-Aid for Scientific Research (B)
-
资助金额:$9.86万
-
财政年份:2000
-
负责人:KOUCHI Akira
-
依托单位:
Development of comet nucleus simulation experiments
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批准号:10554027
-
项目类别:Grant-in-Aid for Scientific Research (B)
-
资助金额:$9.79万
-
财政年份:1998
-
负责人:KOUCHI Akira
-
依托单位:
Chemical reaction mechanism on the surafce of interstellar icy grains
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批准号:07454128
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$4.99万
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财政年份:1995
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负责人:KOUCHI Akira
-
依托单位:
Material evolution simulator
-
批准号:05554013
-
项目类别:Grant-in-Aid for Developmental Scientific Research (B)
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资助金额:$4.99万
-
财政年份:1993
-
负责人:KOUCHI Akira
-
依托单位:
海外基金