The mass budgets of carbonyl sulfide, dimethyl sulfide, carbon disulfide and hydrogen sulfide

Watts, Simon

doi:10.1016/s1352-2310(99)00342-8

Cited by 443 publications

(492 citation statements)

References 113 publications

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“…A blank flange, serving as sample cover, attached to a linear translator made it possible to either isolate or expose the sample to reactant gas. No corrections were needed because the volume change upon opening the sample cover was less than 0.52 cm 3 , and the total volume of reactor chamber was 94.0 cm 3 . The seal between the cover and sample holder was made with a Teflon O-ring.…”

Section: Experimental Methods Kcms Experimentsmentioning

confidence: 99%

“…[1][2][3] Its tropospheric lifetime is greater than 1 year, 1,2 and the global atmospheric lifetime is from 2 to 8.9 years, calculated by different researchers. 2,4 Chin et al 2 have reported that about 0.64 Tg‚yr -1 of COS is transported to the stratosphere from the troposphere, where its photolysis is the important source for the stratospheric sulfate layer.…”

Section: Introductionmentioning

confidence: 99%

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Temperature Dependence of the Heterogeneous Reaction of Carbonyl Sulfide on Magnesium Oxide

2008

J. Phys. Chem. A

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The experimental determination of rate constants for atmospheric reactions and how these rate constants vary with temperature remain a crucially important part of atmosphere science. In this study, the temperature dependence of the heterogeneous reaction of carbonyl sulfide (COS) on magnesium oxide (MgO) has been investigated using a Knudsen cell reactor and a temperature-programmed reaction apparatus. We found that the adsorption and the heterogeneous reaction are sensitive to temperature. The initial uptake coefficients (γ t (Ini)) of COS on MgO decrease from 1.07 ( 0.71 × 10 -6 to 4.84 ( 0.60 × 10 -7 with the increasing of temperature from 228 to 300 K, and the steady state uptake coefficients (γ t (SS)) increase from 5.31 ( 0.06 × 10 -8 to 1.68 ( 0.41 × 10 -7 with the increasing of temperature from 240 to 300 K. The desorption rate constants (k des ) were also found to increase slightly with the enhancement of temperature. The empirical formula between the uptake coefficients, desorption rate constants and temperature described in the form of Arrhenius expression were obtained. The activation energies for the heterogeneous reaction and desorption of COS on MgO were measured to be 11.02 ( 0.34 kJ‚mol -1 and 6.30 ( 0.81 kJ‚mol -1 , respectively. The results demonstrate that the initial uptake of COS on MgO is mainly contributed by an adsorption process and the steady state uptake is due to a catalytic reaction. The environmental implication was also discussed.

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Section: Experimental Methods Kcms Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temperature Dependence of the Heterogeneous Reaction of Carbonyl Sulfide on Magnesium Oxide

2008

J. Phys. Chem. A

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Section: A V a I L A B L E O N L I N E A T W W W S C I E N C E D I mentioning

confidence: 99%

“…However, the estimation of global anthropogenic COS sources' strength varies from 0.04 ± 0.02 (Chin and Davis, 1993) to 0.124 ± 0.06 Tg/year (Watts, 2000) due to the small number of investigations of source inventories. Recently, an indirect method has been used for estimation of regional anthropogenic COS emissions based on the linear correlation of COS with CO mixing ratios and the regional CO emission estimates (Blake et al, 2004;Guo et al, 2010).…”

Section: A V a I L A B L E O N L I N E A T W W W S C I E N C E D I mentioning

confidence: 99%

“…e l s e v i e r . c o m / j o u r n a l -o f -e n v i r o n m e n t a l -s c i e n c e s atmospheric COS sinks (Chin and Davis, 1993;Watts, 2000;Kettle et al, 2002;Montzka et al, 2007), and can strongly reduce the COS mixing ratios at ground levels (Campbell et al, 2008).However, the estimation of global anthropogenic COS sources' strength varies from 0.04 ± 0.02 (Chin and Davis, 1993) to 0.124 ± 0.06 Tg/year (Watts, 2000) due to the small number of investigations of source inventories. Recently, an indirect method has been used for estimation of regional anthropogenic COS emissions based on the linear correlation of COS with CO mixing ratios and the regional CO emission estimates (Blake et al, 2004;Guo et al, 2010).…”

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confidence: 99%

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Characteristics and anthropogenic sources of carbonyl sulfide in Beijing

Zhang

et al. 2015

Journal of Environmental Sciences

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Sulfur Compounds

Weil¹,

Sandler²,

Gernon³

2006

Kirk-Othmer Encyclopedia of Chemical Technology

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Sulfur is a component of many industrially useful compounds, particularly process intermediates. Other sulfur compounds are important because of air pollution considerations, coming from natural sources (COS, SO 2 , H 2 S) as well as manmade. Carbon sulfides, carbonyl sulfide, thiophosgene, trichloromethanesulfenyl chloride, hydrogen sulfide, hydrogen polysulfides (sulfanes) and their salts, sulfur halides and oxyhalides, sulfur nitrides, sulfur oxides, sulfur oxygen acids and their salts, thiocyanic acid and its salts, methanesulfonyl chloride, and methanesulfonic acid are all discussed, along with properties, manufacture, shipment and storage, economic aspects, analytical methods, grades and specifications, health and safety, and uses in making agricultural pesticides, pharmaceuticals, food chemicals, oil additives, plastics and plastic additives, and refining catalysts. Elemental sulfur, sulfuric acid, sulfur trioxide, carbon disulfide, thiosulfates and sulfur removal from natural gas are discussed in separate articles in this Encyclopedia .

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The mass budgets of carbonyl sulfide, dimethyl sulfide, carbon disulfide and hydrogen sulfide

Cited by 443 publications

References 113 publications

Temperature Dependence of the Heterogeneous Reaction of Carbonyl Sulfide on Magnesium Oxide

Temperature Dependence of the Heterogeneous Reaction of Carbonyl Sulfide on Magnesium Oxide

Characteristics and anthropogenic sources of carbonyl sulfide in Beijing

Sulfur Compounds

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