Experimental characterization of the energetics of low-temperature surface reactions

Experimental characterization of the energetics of low-temperature surface reactions
复制标题

低温表面反应能量的实验表征

DOI:
10.1038/s41550-019-0729-8
复制
发表时间:
2019
期刊:
影响因子:
14.1
通讯作者:
S. A. Krasnokutski
S. A. Krasnokutski
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Th. K. Henning;S. A. Krasnokutski

文献摘要

参考文献

被引文献

相似文献

例如,尘埃颗粒表面的天体化学反应被认为是复杂有机分子形成的原因,这对生命的起源具有潜在的重要意义。在尘埃表面的化学成分不完全已知的情况下,基本反应性质的知识具有重要意义。在这里,我们描述了一种实验技术,它可以用来测量涉及单对反应物的反应中释放的能量。这些数据可以直接与量子化学计算的结果进行比较,从而得出关于反应路径和能量垒存在的明确结论。与基于气相研究的结果相比,它可以更准确地预测天体化学表面反应的结果。然而,为了达到最高的准确度,需要对特定表面对反应的催化影响有所了解。用该方法研究了C原子与H2、O2和C2H2的反应。相应地揭示了六六六、CO + O和三重环-C3H2产物的形成。
Astrochemical reactions on the surfaces of dust grains, for instance, are thought to be responsible for the formation of complex organic molecules, which are of potential importance for the origin of life. In the situation where the chemical composition of dust surfaces is not precisely known, knowledge of the fundamental reaction properties gains significance. Here we describe an experimental technique that can be used to measure the energy released in reactions involving of a single pair of reactants. These data can be directly compared with the results of quantum chemical computations leading to unequivocal conclusions regarding the reaction pathways and the presence of energy barriers. It allows the prediction of the outcomes of astrochemical surface reactions with higher accuracy compared with that achieved based on gas-phase studies. However, for the highest accuracy, some understanding of the catalytic influence of specific surfaces on the reactions is required. The method was applied to study the reactions of C atoms with H2, O2and C2H2. The formation of HCH, CO + O and triplet cyclic-C3H2products has been revealed, correspondingly.
星际尘埃颗粒上 CO2 的形成:CO O 通道势垒的详细研究
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
M. Minissale;E. Congiu;G. Manicò;V. Pirronello;F. Dulieu
通讯作者: F. Dulieu
气态氧与 Pt{110}(1×2) 上吸附碳的反应
DOI: --
发表时间: 2000
期刊:
影响因子: --
作者:
A. Walker;D. King
通讯作者: D. King
碳原子与烃分子的交叉束反应 III:C(3Pj) 与乙炔 C2H2(X 1Σg+ 反应形成丙炔基 (l-C3H;X 2Πj) 和环丙炔基 (c-C3H;X 2B2) 的化学动力学。 )
DOI: 10.1063/1.474092
发表时间: 1997
影响因子: 4.4
作者:
R. Kaiser;C. Ochsenfeld;M. Head‐Gordon;Y. Lee;A. Suits
通讯作者: A. Suits
DOI: 10.3847/2041-8205/818/2/l31
发表时间: 2016
期刊: The Astrophysical Journal Letters
影响因子: --
作者:
S.A. Krasnokutski;M. Kuhn;M. Renzler;C. Jäger;Th. Henning;P. Scheier
通讯作者: P. Scheier
DOI: 10.1126/science.1257156
发表时间: 2014-10-03
期刊: SCIENCE
影响因子: 56.9
作者:
Lu, Zhou;Chang, Yih Chung;Jackson, William M.
通讯作者: Jackson, William M.