The impact of HS radicals on the measured rate constant of H2S with OH radicals

Wang, Haitao; Zhu, Dongsheng; Wang, Weiping; Mu, Yujing

doi:10.1007/s11434-010-3268-3

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…And almost at the same time, a temperature-controlled environmental reaction smog chamber was set up in Paul Scherrer Institute of Switzerland [18]. Although environmental reaction smog chamber is essential for developing and evaluating chemical mechanisms or models for predicting the formation of SOA in the absence of uncertainties associated with emissions, meteorology, and mixing effects, many works in China mainly focused on the kinetics of the atmospheric related oxidation [19][20][21], and there is lack of the studies on SOA formation and the corresponding atmospheric chemistry and physics based on smog chamber system in China [22][23][24]. Especially, the efficient smog chamber facility, which should be competent for identifying the chemical composition of gas and particle production of the interesting atmospheric chemical reaction processes and evaluating their contribution to the formation of SOA simultaneously, is appealed urgently in China.…”

Section: Introductionmentioning

confidence: 99%

A Smog Chamber Facility for Qualitative and Quantitative Study on Atmospheric Chemistry and Secondary Organic Aerosol

Cheng

Pan

et al. 2014

Chinese Journal of Chemical Physics

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In order to investigate the atmospheric oxidation processes and the formation of secondary organic aerosol (SOA), an indoor environmental reaction smog chamber are constructed and characterized. The system consists of the collapsible ∼830 L FEP Teflon film main reactor, in which the atmospheric chemical reactions take place and the formation of SOA occurs under the simulated atmospheric conditions, and the diverse on-line gas-and particle-phase instrumentation, such as the proton transfer reaction mass spectrometer, the synchrotron radiation photoionization mass spectrometer, the aerosol laser time-of-flight mass spectrometer, and other traditional commercial instruments. The initial characterization experiments are described, concerning the temperature and ultraviolet light intensity, the reactivity of the pure air, the wall loss rates of gaseous compounds and particulate matter. And the initial evaluation experiments for SOA yields from the ozonolysis of α-pinene and for mass spectra of the products resulting from the photooxidation of OH initiated isoprene are also presented, which indicate the applicability of this facility on the studies of gas-phase chemical mechanisms as well as the formation of SOA expected in the atmosphere.

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Section: Introductionmentioning

confidence: 99%

A Smog Chamber Facility for Qualitative and Quantitative Study on Atmospheric Chemistry and Secondary Organic Aerosol

Cheng

Pan

et al. 2014

Chinese Journal of Chemical Physics

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“…Wang et al introduced the damage-corrected constitutive model into the SHPB test technique and proposed a new method combining Lagrangian inverse analysis with the Hopkinson pressure bar technique, which is divided into the "lsv + nv" method and the "lsv + nε" method. It has also been applied to study the dynamic mechanical responses of nylon, concrete, Ti-Ni alloy, and other materials [132][133][134]. Traditional Lagrangian analysis in a one-dimensional stress state, regardless of the assumptions made about the material's constitutive relationship, is based on the following conservation equations:…”

Section: Application Of Lagrangian Analysis Methods To Impact Test Of...mentioning

confidence: 99%

Review of SHPB Dynamic Load Impact Test Characteristics and Energy Analysis Methods

Yang,

Li,

Qiao

2023

Processes

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Since the split-Hopkinson pressure bar (SHPB) test technology was proposed, it has played an important role in the study of dynamic mechanical properties of materials under the impact of dynamic load. It is a major test technology for the study of dynamic mechanical properties of materials. The expansion of the range of materials studied has also posed a challenge to the SHPB test technique, requiring some improvements to the conventional SHPB test apparatus and analysis methods to meet the test conditions and ensure the accuracy of its results. Based on a systematic review of the development of the SHPB test technique and the test principles, the main factors that influence the test’s ability to meet the two basic assumptions at this stage are analyzed, and the ways to handle them are summarized. The stress wave dispersion phenomenon caused by the transverse inertia effect of the pressure bar means that the test no longer satisfies the one-dimensional stress wave assumption, while the pulse-shaping technique effectively reduces the wave dispersion phenomenon and also has the effect of achieving constant strain rate loading and promoting the dynamic stress equilibrium of the specimen. Impedance matching between the pressure bar and specimen effectively solves the problem of the test’s difficulty because the transmitted signal is weak, and the assumption that the stress/strain is uniformly distributed along the length of the specimen is not satisfied when studying low-wave impedance material with the conventional SHPB test device. The appropriate pressure bar material can be selected according to the value of the wave impedance of the test material. According to the wave impedance values of different materials, the corresponding suggestions for the selection of pressure bar materials are given. Moreover, a new pressure bar material (modified gypsum) for materials with very-low-wave impedance is proposed. Finally, for some materials (foamed concrete, aluminum honeycomb, porous titanium, etc.) that cannot meet the two basic assumptions of the test, the Lagrangian analysis method can be combined with SHPB test technology application. Based on the analysis and calculation of the energy conservation equation, the dynamic constitutive relationship of the materials can be obtained without assuming the constitutive relationship of the experimental materials.

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“…The OH + H 2 S→H 2 O + SH reaction is also thought to be the first stage in the oxidation of H 2 S, which possibly evolves into sulfuric acid or sulfate aerosol [10]. Therefore, much attention has been paid to studying the kinetics and dynamics of the OH + H 2 S→H 2 O + SH reaction both experimentally [11][12][13][14][15][16][17][18][19][20][21][22] and theoretically [23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Quasi-Classical Trajectory Dynamics Study of the Reaction OH + H2S→H2O + SH and Its Isotopic Variants: Comparison with Experiment

Wang

et al. 2023

Symmetry

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The hydrogen abstraction reaction OH + H2S→H2O + SH plays an important role in acid rain formation, air pollution and climate change. In this work, the product energy disposals of the reaction and its isotopic variants OD + H2S and OD + D2S are calculated on a new ab-initio-based ground electronic state potential energy surface (PES) using the quasi-classical trajectory method. The PES is developed by fitting a total of 72,113 points calculated at the level of UCCSD(T)-F12a/aug-cc-pVTZ and using the fundamental invariant-neural network method, resulting in a total RMSE of 4.14 meV. The product H2O formed in the OH + H2S reaction at 298 K is found to be largely populated in the first overtone states of its symmetric and asymmetric stretching modes, while the vibrational distributions of the products HOD and D2O in the isotopically substituted reactions are visibly different. The computed product vibrational state distributions agree reasonably well with experimental results and are rationalized by the sudden vector projection model.

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The impact of HS radicals on the measured rate constant of H2S with OH radicals

Abstract: The rate constant for the reaction of OH radicals and hydrogen sulfide (H 2 S) was studied in different bath gases (including N 2 , air, O 2 and He) by using relative technique at 298 K.

Cited by 8 publications

References 27 publications

A Smog Chamber Facility for Qualitative and Quantitative Study on Atmospheric Chemistry and Secondary Organic Aerosol

A Smog Chamber Facility for Qualitative and Quantitative Study on Atmospheric Chemistry and Secondary Organic Aerosol

Review of SHPB Dynamic Load Impact Test Characteristics and Energy Analysis Methods

Quasi-Classical Trajectory Dynamics Study of the Reaction OH + H2S→H2O + SH and Its Isotopic Variants: Comparison with Experiment

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