The selective reduction of SO3 to SO2 and the oxidation of NO to NO2 by methanol

Lyon, Richard K.; Cole, Jerald A.; Kramlich, John C.; Chen, Shi L.

doi:10.1016/0010-2180(90)90067-2

Cited by 68 publications

(51 citation statements)

References 10 publications

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“…1.4 · 10 mol s , room temperature measurements by Yamada et al [11] and Biggs et al [12], which is also in good agreement with the determination by Glänzer and Troe of cm 3 [10] at How-13 Ϫ1 Ϫ1…”

Section: ϫ1 ϫ1supporting

confidence: 86%

“…The rate coefficients proposed by Glänzer and Troe [9,10] for CH 3 NO 2 dissociation (R1) and for reaction (R14) have largely been supported by subsequent work and have remained unchallenged. The rate constant reported by Glänzer and Troe [10] for the disproportionation step, cm 3 is in 13 Ϫ1 Ϫ1 k ϭ 1.3 · 10 mol s (1100 -1400 K), 14 good agreement with concurrent values of approximately cm 3 obtained at room tem-13 Ϫ1 Ϫ1…”

Section: Introductionsupporting

confidence: 64%

“…The mechanism of promotion depends both on the fuel and the temperature regime, but it usually involves the fast reaction, CH ϩ NO (ϩ M) EF CH NO (ϩ M) (R1b) 3 2 3 2 CH ϩ NO (ϩ M) EF CH ONO(ϩ M) (R2) 3 2 3 These reactions are chain terminating and the competition between (R14) and recombina-CH ϩ NO 3 2 tion may be important for the overall reaction rate in the NO sensitized oxidation of methane [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Nitromethane dissociation: Implications for the CH3 + NO2 reaction

Glarborg¹,

Bendtsen²,

Miller³

1999

Int. J. Chem. Kinet.

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The thermal decomposition of nitromethane under highly diluted conditions in shock tubes has been analyzed in terms of a detailed chemical kinetic model. The experimental data were adopted from Glä nzer and Troe, Hsu and Lin, and Zhang and Bauer, respectively; they cover the temperature range and pressures from 0.5 to 6.0 bar. Based on 1000-1400 K these results, rate constants for the reactions (R1) andThe high and low pressure limits for reaction (R1) determined by Glä nzer and Troe have been shown to be consistent with more recent shock tube data, provided a center broadening parameter is introduced to describe the fall-off behavior. Our reinterpretation of the shock tube results of Glä nzer and Troe together with room temperature measurements indicate that the rate constant for (R14) decreases slightly with temperature, as cm mol s . order of magnitude faster than recombination of CH 3 and NO 2 to form nitromethane. Based on the available data for the forward and reverse rate of reaction (R1) a value of 66.7 Ϯ 2.0 cal/(mol K) for the entropy S 0,298 of CH 3 NO 2 is estimated.

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Section: ϫ1 ϫ1supporting

confidence: 86%

Section: Introductionsupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nitromethane dissociation: Implications for the CH3 + NO2 reaction

Glarborg¹,

Bendtsen²,

Miller³

1999

Int. J. Chem. Kinet.

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“…In comparison with nitrogen monoxide, nitrogen dioxide is in fact characterized by higher solubility and reactivity in water or alkali solutions. The NO 2 Henry constant is five times the value reported for NO [1], and the reactivity of this gas further increases its solubility. So, once oxidized in NO 2 form, NO x could in principle be removed by a simple wet scrubbing.…”

Section: Introductionmentioning

confidence: 80%

“…Several oxidation processes have actively been studied. Lyon et al [2] proposed the use of methanol, Murakami et al [4,5] the use of methanol, formaldehyde and hydrogen peroxide, Hjuler et al [3] the injection of methanol, ethane, acetone, acetaldehyde or methylamine. In this study the results of an experimental campaign to investigate the effectiveness of hydrogen peroxide as an oxidizing agent are reported.…”

Section: Introductionmentioning

confidence: 99%

Innovative technique for the control of NO_xformed in combustion processes

Verdone¹,

Scarsella²,

Liuzzo³

et al. 2010

WIT Transactions on Ecology and the Environment

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NO x formed in combustion processes is mainly constituted by nitrogen monoxide (NO) while nitrogen dioxide (NO 2 ) accounts for marginal concentration only. However, being NO 2 characterized by higher water solubility and equilibrium constant in the neutralization reaction operated with basic reactants, it is easily removed via dry or wet processes. On this basis an innovative process alternative to the conventional DeNO x SCR and SNCR can be envisaged, where the oxidation of NO to NO 2 makes the successive abatement of the oxidized fraction relatively easier. The scope of the work is the study of the oxidation of NO to NO 2 , considered as the controlling step of the proposed process, operated with hydrogen peroxide (H 2 O 2 ). A mathematical model of the oxidation has been developed in the Chemkin v. 3.7 environment, describing the gas phase kinetics in the energy recovery section of a generic combustion process through the Miller and Bowman (1989) kinetic mechanism. The base model has been improved with the introduction of the oxidation steps induced by the injection of hydrogen peroxide drawn from the literature. The NO oxidation reaction was investigated in a temperature range of 250-700°C, with a 20% excess of oxidizing agent with respect to the NO/oxidizer oxidation reaction stoichiometry. The experimental maximum conversion results are less than the calculated one of about 20%. The results of the model have been validated through experimental runs conducted in a bench scale pilot plant.

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Flue gas denitration performance of the semicoke sorbent

Sun

Ruili

et al. 2014

Environ. Prog. Sustainable Energy

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Semicoke-based sorbent for flue gas cleaning was prepared from wasted semicoke material with nitric acid activation and high temperature treatment. The denitration performance of this sorbent was investigated under different simulated flue gases using a tubular reactor. The results showed that the sorbent had a good denitration capacity and efficiency. The surface physicochemical properties of the sorbent were analyzed by BET (Brunauer Emmett and Teller), transmission electron microscope, and Temperature Programmed Desorption. Heat treatment and nitric acid activation could enlarge the surface area and the pore volume obviously. Experiments with different adsorptive concentrations show that oxygen in flue gas played a positive role in nitrogen oxides removing progress, while the existence of water vapor and sulfur dioxide in flue gas had some negative influences. Heat treatment and nitric acid activation could result in great change of the surface physicochemical properties and increase the adsorption performance of the wasted semicoke material.

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The selective reduction of SO3 to SO2 and the oxidation of NO to NO2 by methanol

Cited by 68 publications

References 10 publications

Nitromethane dissociation: Implications for the CH3 + NO2 reaction

Nitromethane dissociation: Implications for the CH3 + NO2 reaction

Innovative technique for the control of NO_xformed in combustion processes

Flue gas denitration performance of the semicoke sorbent

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The selective reduction of SO3 to SO2 and the oxidation of NO to NO2 by methanol

Cited by 68 publications

References 10 publications

Nitromethane dissociation: Implications for the CH3 + NO2 reaction

Nitromethane dissociation: Implications for the CH3 + NO2 reaction

Innovative technique for the control of NOxformed in combustion processes

Flue gas denitration performance of the semicoke sorbent

Contact Info

Product

Resources

About

Innovative technique for the control of NO_xformed in combustion processes