Surface abundance change in vacuum ultraviolet photodissociation of CO2 and H2O mixture ices
文献信息
Takashi Kinugawa, Akihiro Yabushita, Masahiro Kawasaki, Tetsuya Hama, Naoki Watanabe
Photodissociation of amorphous ice films of carbon dioxide and water co-adsorbed at 90 K was carried out at 157 nm using oxygen-16 and -18 isotopomers with a time-of-flight photofragment mass spectrometer. O(3PJ) atoms, OH (v = 0) radicals, and CO (v = 0,1) molecules were detected as photofragments. CO is produced directly from the photodissociation of CO2. Two different adsorption states of CO2, i.e., physisorbed CO2 on the surface of amorphous solid water and trapped CO2 in the pores of the film, are clearly distinguished by the translational and internal energy distributions of the CO molecules. The O atom and OH radical are produced from the photodissociation of H2O. Since the absorption cross section of CO2 is smaller than that of H2O at 157 nm, the CO2 surface abundance is relatively increased after prolonged photoirradiation of the mixed ice film, resulting in the formation of a heterogeneously layered structure in the mixed ice at low temperatures. Astrophysical implications are discussed.
相关文献
Highly active and selective synthesis of imines from alcohols and amines or nitroarenes catalyzed by Pd/DNA in water with dehydrogenation
Lin Tang, Huayin Sun, Yunfeng Li, Zhenggen Zha, Zhiyong Wang
DOI: 10.1039/C2GC36312G
Stereoselective Ir(iii)-catalyzed dimerization reaction of enynes: an entry to functionalized polyunsaturated and cyclic systems
Mehdi Ez-Zoubir, Florent Le Boucher d'Herouville, Jack A. Brown, Virginie Ratovelomanana-Vidal, Véronique Michelet
DOI: 10.1039/C0CC00721H
Retracted article: Pt-free cathode catalysts prepared via multi-step pyrolysis of Fe phthalocyanine and phenolic resin for fuel cells
Libin Wu, Yuta Nabae, Shogo Moriya, Katsuyuki Matsubayashi, Nazrul M. Islam, Shigeki Kuroki, Masa-aki Kakimoto, Jun-ichi Ozaki, Seizo Miyata
DOI: 10.1039/C0CC01597K
Selective conversion of cellulose into bulk chemicals over Brønsted acid-promoted ruthenium catalyst: one-pot vs. sequential process
Shaohui Ge, Chunxiao Ren, Minhui Zhang, Alex Yip, Chunming Xu
DOI: 10.1039/C2GC36067E
Making a [Co24] metallamacrocycle from the shuttlecock-like tetranuclear cobalt-calixarene building blocks
Guancheng Xu, Wuping Liao, Xinwu Wang, Ruiping Deng, Hongjie Zhang, Song Gao
DOI: 10.1039/C0CC01844A
Selective conversion of furfuryl alcohol to 1,2-pentanediol over a Ru/MnOxcatalyst in aqueous phase
Guoqiang Ding, Hongyan Zheng
DOI: 10.1039/C2GC36270H
Solvent and catalyst-free synthesis of polyphosphates
Smaranda Iliescu, Gheorghe Ilia, Nicoleta Plesu, Adriana Popa, Aurelia Pascariu
DOI: 10.1039/B602462A
A kinetic study on the decomposition of 5-hydroxymethylfurfural into levulinic acid
B. Girisuta, L. P. B. M. Janssen, H. J. Heeres
DOI: 10.1039/B518176C
Salt concentration-induced dehybridisation of DNA–gold nanoparticle conjugate assemblies for diagnostic applications
Ju-Hwan Oh, Jae-Seung Lee
DOI: 10.1039/C0CC01488E
您可能还喜欢
奥美沙坦酯杂质4(CAS号:95579-71-8)的主要用途是什么?
奥美沙坦酯杂质4在药物工业中并无特定用途,主要作为生产和质量控制中的监控指标,以确保产品质量和符合相关规范。它具有一定的化学活性,因此在生产过程中需要严格控制其...
如何储存C3bot (154-182)(CAS号:1246280-79-4)?
C3bot (154-182)应储存在干燥、阴凉、通风良好的环境中,避免阳光直射。具体储存条件需要参考其相关安全数据表(SDS)中的储存信息。建议使用密闭容器存...
在合成中是否有4-吡唑甲酸乙酯(CAS号:37622-90-5)的替代品?
在合成过程中,可以考虑使用类似结构的化合物作为替代品,例如4-吡唑甲酸甲酯或其他吡唑类化合物。这些替代品在性质上相似,可以用于相似的合成反应中,但需根据具体应用...
(2-溴乙基)三甲基硅烷(CAS号:18156-67-7)的主要用途是什么?
(2-溴乙基)三甲基硅烷主要用作有机合成中的溴代试剂,特别是在硅化学领域中,用于制备硅烷衍生物和硅基功能材料。它也用于表面改性、催化剂合成、医药中间体合成以及分...
如何处理含有2-(4-broMophenyl)-1,1,1-trifluoropropan-2-ol(CAS号:122243-28-1)的废料?
含该化合物的废料需按照危险废物管理规定进行分类和处理。首先,应尽量减少废料的产生,通过改进生产工艺实现废物最小化。对于不可避免的废料,建议采用安全的收集方法,避...
什么是1,1,1-三氟-6-苯基-5-(e)-己烯-2,4-二酮(CAS号:18931-64-1)?
1,1,1-三氟-6-苯基-5-(e)-己烯-2,4-二酮是一种有机化合物,化学式为C14H8F3O2。它是一种具有特定立体结构的芳香族化合物,属于酮类。
2-(2-甲基哌啶-1-基)-2-氧代-乙酸(CAS号:77654-61-6)的主要用途是什么?
2-(2-甲基哌啶-1-基)-2-氧代-乙酸主要用于药物合成、有机合成及作为化学试剂。它在医药领域有一定的应用,可用于合成某些药物中间体。此外,它还用于实验室研...
如何储存(R)-1-(3-Chlorophenyl)-2,2,2-trifluoroethanamine(CAS号:1213627-66-7)?
应将(R)-1-(3-氯苯基)-2,2,2-三氟乙胺储存在阴凉、干燥、通风良好的地方,远离火源和热源。应使用密封的容器储存,并避免光照。储存温度应控制在室温范围...
N-亚硝基-N,N-二壬基胺(CAS号:84424-96-4)的市场或研究趋势如何?
N-亚硝基-N,N-二壬基胺目前主要应用于有机合成和药物化学领域。市场趋势显示,随着有机合成技术的进步,该化合物在新药研发中的应用将更加广泛。新兴研究领域包括其...
5-Chloro-2-methoxy-3-(2,2,2-trifluoroethoxy)pyridine(CAS号:1280786-68-6)的市场或研究趋势如何?
该化合物在医药、农药等领域有潜在应用价值,但市场需求较小。目前研究趋势主要集中在探索其在特定领域的应用潜力,如作为药物合成中的中间体。随着研究的深入,预计未来市...
来源期刊
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.












![N-[(1R,2R)-2-Amino-1,2-diphenylethyl]-1,1,1-trifluoromethanesulfonamide structure N-[(1R,2R)-2-Amino-1,2-diphenylethyl]-1,1,1-trifluoromethanesulfonamide structure](https://cnstatic.chemtradehub.com/structs/852/852212-89-6-5ef9.webp)
![9-Ethyl-3-{(E)-[ethyl(2-methylphenyl)hydrazono]methyl}-9H-carbazole structure 9-Ethyl-3-{(E)-[ethyl(2-methylphenyl)hydrazono]methyl}-9H-carbazole structure](https://cnstatic.chemtradehub.com/structs/127/1274948-12-7-301f.webp)
