Heterogeneous Reaction of Nitric Acid with Nitric Oxide on Glass Surfaces under Simulated Atmospheric Conditions

2004 ◽  
Vol 108 (27) ◽  
pp. 5793-5799 ◽  
Author(s):  
Jörg Kleffmann ◽  
Thorsten Benter ◽  
Peter Wiesen
Keyword(s):  
Nitric Oxide ◽  
Nitric Acid ◽  
Heterogeneous Reaction ◽  
Atmospheric Conditions ◽  
Glass Surfaces

Heterogeneous Reaction of Nitric Acid with Nitric Oxide on Glass Surfaces under Simulated Atmospheric Conditions.

ChemInform ◽  
2004 ◽  
Vol 35 (38) ◽  
Author(s):  
Joerg Kleffmann ◽  
Thorsten Benter ◽  
Peter Wiesen
Keyword(s):  
Nitric Oxide ◽  
Nitric Acid ◽  
Heterogeneous Reaction ◽  
Atmospheric Conditions ◽  
Glass Surfaces

An Overview of Aeronomic Processes in the Stratosphere and Mesosphere

1974 ◽  
Vol 52 (8) ◽  
pp. 1381-1396 ◽  
Author(s):  
M. Nicolet
Keyword(s):  
Nitric Oxide ◽  
Water Vapor ◽  
Nitric Acid ◽  
Oxygen Atom ◽  
Eddy Diffusion ◽  
Atmospheric Conditions ◽  
Hydrogen Atoms ◽  
Electronically Excited ◽  
The Vertical Distribution ◽  
Excited Oxygen

The discrepancy noted between theoretical and observational concentrations of O3 in the mesosphere and stratosphere can be explained by an effect of hydrogen compounds and of nitrogen oxides. Solar radiation dissociates water vapor and methane in the thermosphere and upper mesosphere. In the stratosphere the reaction of the excited oxygen atom O(1D) with methane and nitrous oxide leads to a destruction of these two molecules in the stratosphere which corresponds to a production of carbon monoxide with water vapor and of nitric oxide, respectively. Hydrogen and water vapor molecules also react with the electronically excited oxygen atom O(1D) leading to hydroxyl radicals. Insitu sources of H2 exist in the stratosphere and mesosphere: reaction of OH with CH1, photodissociation of formaldehyde, and also reaction between hydroperoxyl radicals and hydrogen atoms. The vertical distribution of water vapor is not affected by its dissociation in the stratosphere and mesosphere since its reformation is rapid.The ratio of the hydroxyl and hydroperoxyl radical concentrations cannot be determined with adequate precision and complicates the calculation of the destruction of ozone which occurs through reactions of OH and HO2 not only with atomic oxygen at the stratopause but also directly in the middle stratosphere and with CO and NO in the lower stratosphere.In addition to the various reactions involving nitric oxide and nitrogen dioxide, the reactions leading to the production and destruction of nitric acid and nitrous acid must be considered. Nitric acid molecules are involved in an eddy diffusion transport from the lower stratosphere into the troposphere and are, therefore, responsible for the removal of nitric oxide which is produced in the stratosphere. Atmospheric conditions must be known at the tropopause.

Nitrogen and oxygen exchange between nitric oxide and aqueous solutions of nitric acid

1973 ◽  
Vol 12 (6) ◽  
pp. 1369-1373 ◽  
Author(s):  
Siegfried Jordan ◽  
Francis T. Bonner
Keyword(s):  
Nitric Oxide ◽  
Nitric Acid ◽  
Aqueous Solutions ◽  
Oxygen Exchange

scholarly journals XLIV.—On the determination of nitric acid as nitric oxide by means of its action on mercury

1879 ◽  
Vol 35 (0) ◽  
pp. 375-387
Author(s):  
Robert Warington
Keyword(s):  
Nitric Oxide ◽  
Nitric Acid

Kinetics of the heterogeneous reaction of nitric acid with mineral dust particles: an aerosol flowtube study

2009 ◽  
Vol 11 (36) ◽  
pp. 7921 ◽  
Author(s):  
A. Vlasenko ◽  
T. Huthwelker ◽  
H. W. Gäggeler ◽  
M. Ammann
Keyword(s):  
Nitric Acid ◽  
Mineral Dust ◽  
Heterogeneous Reaction ◽  
Dust Particles ◽  
Kinetics Of

Modeling surface-mediated renoxification of the atmosphere via reaction of gaseous nitric oxide with deposited nitric acid

2002 ◽  
Vol 36 (36-37) ◽  
pp. 5741-5748 ◽  
Author(s):  
Eladio M Knipping ◽  
Donald Dabdub
Keyword(s):  
Nitric Oxide ◽  
Nitric Acid

Heterogeneous reaction of nitric acid with methyl sulfide

1985 ◽  
Vol 63 (10) ◽  
pp. 2805-2807
Author(s):  
Donald L. Singleton ◽  
Robert S. Irwin ◽  
Donald J. McKenney ◽  
George Paraskevopoulos
Keyword(s):  
Gas Chromatography ◽  
Infrared Spectroscopy ◽  
Nitric Acid ◽  
Initial Rate ◽  
Heterogeneous Reaction ◽  
Zero Order ◽  
Homogeneous Reaction ◽  
Gaseous Mixtures ◽  
First Order ◽  
Upper Limit

The reaction of gaseous mixtures of CH3SCH3 and HNO3, studied by infrared spectroscopy and gas chromatography, was found to occur heterogeneously. The products detected were NO2 and CH3S(O)CH3, and approximately one NO2 was formed for each CH3SCH3 consumed. The initial rate of formation of NO2 was first order in CH3SCH3 and zero order in HNO3. The mechanism is discussed, and an upper limit is determined for the rate constant of the homogeneous reaction.

scholarly journals Tropospheric nitric acid columns from the IASI satellite instrument interpreted with a chemical transport model: Implications for parameterizations of nitric oxide production by lightning

2014 ◽  
Vol 119 (16) ◽  
pp. 10068-10079 ◽  
Author(s):  
Matthew Cooper ◽  
Randall V. Martin ◽  
Catherine Wespes ◽  
Pierre-Francois Coheur ◽  
Cathy Clerbaux ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nitric Acid ◽  
Transport Model ◽  
Chemical Transport ◽  
Nitric Oxide Production ◽  
Chemical Transport Model ◽  
Oxide Production

scholarly journals Reducing chloride corrosion of stainless steel in the nuclear fuel manufacturing industry : an electrochemical-environmental perspective

2021 ◽  
Author(s):  
David Spence
Keyword(s):  
Nitric Oxide ◽  
Stainless Steel ◽  
Nitrous Oxide ◽  
Nitric Acid ◽  
Environmental Impacts ◽  
Nuclear Fuel ◽  
Manufacturing Industry ◽  
Acid Strength ◽  
Chloride Corrosion

Chloride extraction from nitric acid is an important technique for reducing corrosion of stainless steel. However, there has been a limited amount of research conducted in this area. Pumping ozone-enriched air through nitric acid is a corrosion reduction method that is widely used in the nuclear fuel manufacturing industry, including the Blind River Refinery (BRR), to purge chlorine gas out of the acid. However, this method has been shown to produce significant environmental impacts. Overall, it is an inconsistent and cost-deficient method for reducing chloride corrosion of stainless steel in nitric acid mediums below 7.2M (37.0% volume). This thesis builds on existing literature and demonstrates that oxidizing chloride ions in nitric acid using oxygen, nitric oxide and nitrous oxide is an efficient and cost-effective chloride extraction method for the case study (BRR). It was shown that the level of chloride extraction from nitric acid increased significantly when the acid strength was elevated above 8.4M (42.0%volume) and sparged with various oxidants. The most effective oxidants at this nitric acid strength were: oxygen, ozone, nitric oxide and nitrous oxide. Nitric oxide and nitrous oxide can be produced by sparging 43.0% nitric acid with air or sparging 43.0% nitric acid with NOx fumes. In terms of the BRR case study, it was shown that using operational-specific combinations of these methods can drastically reduce the environmental impacts associated with their chloride removal process; significantly increase the level of chloride extraction; reduce energy consumption and operating costs by as much as 54.0%; and reduce material requirements by as much as 80.0%.

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