The chemical reaction equilibrium constant and standard molar enthalpy change for the reaction : a spectroscopic and calorimetric investigation

Ermatchkov, Viktor; Kamps, Álvaro Pérez-Salado; Maurer, Gerd

doi:10.1016/j.jct.2004.08.011

Cited by 14 publications

(7 citation statements)

References 26 publications

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“…The 958-cm −1 feature in Figure 1 agrees with the position of the most intense band of pyrosulfite (S 2 O 5 2− , also called metabisulfite and disulfite in the literature). This anion also has a weaker, broader band near 1152 cm −1 , which we also observed [see Ermatchkov et al, 2005]. We note that our 958-cm −1 feature is not due to SO 3 2− , which we observed at 927 cm −1 on warming ices made of H 2 O + SO 2 + NH 3 [Hisatsune and Heicklen, 1975].…”

Section: Discussionsupporting

confidence: 82%

“…A similar band has been assigned to the SH stretch in HSO 3 − by others [ Connick et al , 1982; Hisatsune and Heicklen , 1975]. The two features in the 1100 – 1000 cm −1 region of Figure 1 resemble the bisulfite bands shown in papers of Ermatchkov et al [2005, Figure 1], and Zhang and Ewing [2002, Figure 3], and Pichler et al [1997, Figure 1].…”

Section: Discussionsupporting

confidence: 68%

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Thermally‐induced chemistry and the Jovian icy satellites: A laboratory study of the formation of sulfur oxyanions

Loeffler

Hudson

2010

Geophysical Research Letters

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[1] Laboratory experiments have demonstrated that magnetospheric radiation in the Jovian system drives reaction chemistry in ices at temperatures relevant to Europa and other icy satellites. Here we present new results on thermallyinduced reactions at 50-100 K in solid H 2 O-SO 2 mixtures, reactions that take place without the need for a high-radiation environment. We find that H 2 O and SO 2 react to produce sulfur oxyanions, such as bisulfite, that as much as 30% of the SO 2 can be consumed through this reaction, and that the products remain in the ice when the temperature is lowered, indicating that these reactions are irreversible. Our results suggest that thermally-induced reactions can alter the chemistry at temperatures relevant to the icy satellites in the Jovian system. Citation: Loeffler, M. J., and R. L. Hudson (2010), Thermally-induced chemistry and the Jovian icy satellites: A laboratory study of the formation of sulfur oxyanions, Geophys.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionsupporting

confidence: 68%

Thermally‐induced chemistry and the Jovian icy satellites: A laboratory study of the formation of sulfur oxyanions

Loeffler

Hudson

2010

Geophysical Research Letters

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“…The equilibrium constant at 26 and 60˚C (K 26 = 22.8 l/mol, K 60 =46.9 l/mol) was taken from the literature [9]. The equilibrium constant for the reaction studied was calculated by means of Eq.…”

Section: Resultsmentioning

confidence: 99%

A study on the equilibrium reaction of benzaldehyde and sodium bisulphite by in situ Fourier transform IR spectroscopy

Sallay¹,

Szilágyi²,

Csontos³

et al. 2009

Per. Pol. Chem. Eng.

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“…Where T is the temperature in Kelvin, constants A, B, C, D were adjustable parameters available in Aspen databank [72] except for the reaction (8) obtained from Ermatchkov et al [73], and their units are: A is dimensionless, B has the dimensions of T, C is dimensionless, and D has the dimensions of T -1 . The reaction rates ( ) of the reaction ( ) are presented in Table 6 below and are determined by the power law defined as;…”

Section: Model Specification and Validationmentioning

confidence: 99%

CO2/SO2 emission reduction in CO2 shipping infrastructure

Awoyomi

Patchigolla

Anthony

2019

International Journal of Greenhouse Gas Control

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There is an increased focus on the reduction of anthropogenic emissions of CO 2 by means of CO 2 capture processes and storage in geological formations or for enhanced oil recovery. The necessary link between the capture and storage process is the transport system. Ship-based transport of CO 2 is a better option when distances exceeds 350 km compared to an offshore pipeline and offers more flexibility for transportation unlike pipelines which require a continuous flow of compressed gas. Several feasibility studies have been undertaken to ascertain the viability of large-scale transportation of CO 2 by shipping in terms of the liquefaction process, and gas conditioning, but limited work has been done on reducing emissions from the ship's engine combustion. From 2020, ships operating worldwide will be required to use fuels with 0.5% or less sulphur content (versus 3.5% now) or adapt adequate measures to reduce these emissions. This study explores the use of the solvent-based postcombustion carbon capture and storage (CCS) process for CO 2 and SO 2 capture from a typical CO 2 carrier. A rate based aqueous ammonia process model was developed, validated, then scaled up and modified to process flue gas from a Wartsila 9L46F marine diesel engine. Different modes of operation of the carrier were analysed and the most efficient mode to operate the CCS system is while it is sailing. The heat recovered from the flue gas was used for solvent regeneration. A sensitivity study revealed that the 4 MW th supplied by the "waste heat recovery" system was enough to achieve a CO 2 capture level of 70% at a solvent recirculation flowrate of 90-100 kg/s. The removal of SO 2 by the ammonia water solution was above 95% and this led to the possibility of formating a value-added product, ammonium sulphate. The boil-off gas and captured emitted CO 2 were recovered using a two stage re-liquefaction cycle and re-injected into the cargo tanks; thereby reducing extra space requirements on the ship.

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The chemical reaction equilibrium constant and standard molar enthalpy change for the reaction : a spectroscopic and calorimetric investigation

Cited by 14 publications

References 26 publications

Thermally‐induced chemistry and the Jovian icy satellites: A laboratory study of the formation of sulfur oxyanions

Thermally‐induced chemistry and the Jovian icy satellites: A laboratory study of the formation of sulfur oxyanions

A study on the equilibrium reaction of benzaldehyde and sodium bisulphite by in situ Fourier transform IR spectroscopy

CO2/SO2 emission reduction in CO2 shipping infrastructure

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