The Reaction of Thorium Nitrate Tetrahydrate with Nitrogen Oxides. Anhydrous Thorium Nitrate1

A study has been made of the solubility of uranyl nitrate hexahydrate and thorium nitrate tetrahydrate in various organic solvents at 20 °C. In all the solvents investigated no case was found where the thorium nitrate tetrahydrate was more soluble than the uranyl nitrate hexahydrate. Hydrocarbons do not dissolve either compound to an appreciable extent. Addition of a ketone, aldehyde, or alcohol group enhances the solubility considerably. The simpler the compound the greater the solubility of the nitrate in any given family.

Download Full-text

ON THE SOLUBILITY OF THORIUM NITRATE TETRAHYDRATE AND URANYL NITRATE HEXAHYDRATE IN ORGANIC SOLVENTS

Canadian Journal of Research ◽

10.1139/cjr50b-021 ◽

1950 ◽

Vol 28b (4) ◽

pp. 156-160

Author(s):

Norris F. Hall ◽

Charles C. Templeton

Keyword(s):

Organic Solvents ◽

Uranyl Nitrate ◽

Thorium Nitrate ◽

Nitrate Hexahydrate ◽

Uranyl Nitrate Hexahydrate ◽

Nitrate Tetrahydrate

The values reported by Yaffe for the solubilities of thorium nitrate tetrahydrate and uranyl nitrate hexahydrate in various organic solvents are compared with those previously reported by Templeton and Hall, the former being much lower than the latter. Some of the accessory experiments of Templeton and Hall are here presented in support of the position that their values more closely correspond to equilibrium than those of Yaffe.

Download Full-text

Thorium Nitrate Tetrahydrate

ACS Reagent Chemicals ◽

10.1021/acsreagents.4403 ◽

2017 ◽

Keyword(s):

Thorium Nitrate ◽

Nitrate Tetrahydrate

Download Full-text

WET BURNING – THE MODERN TREND IN ENVIRONMENTAL BENIGN FUEL COMBUSTION AND IN SOLUTION TO THE PROBLEM OF SUSTAINABLE DEVELOPMENT OF THE POWER GENERATION

Alternative Energy and Ecology (ISJAEE) ◽

10.15518/isjaee.2018.25-30.096-117 ◽

2018 ◽

pp. 96-117 ◽

Cited By ~ 2

Author(s):

B. S. Soroka

Keyword(s):

Numerical Simulation ◽

Nitrogen Oxides ◽

Chemical Kinetics ◽

Fuel Combustion ◽

Transport Processes ◽

Cfd Modeling ◽

Furnace Chamber ◽

Modern Trend ◽

Atmospheric Air ◽

No Formation

The article considers the role and place of water and water vapor in combustion processes with the purpose of reduction the effluents of nitrogen oxides and carbon oxide. We have carried out the complex of theoretical and computational researches on reduction of harmful nitrogen and carbon oxides by gas fuel combustion in dependence on humidity of atmospheric air by two approaches: CFD modeling with attraction of DRM 19 chemical kinetics mechanism of combustion for 19 components along with Bowman’s mechanism used as “postprocessor” to determine the [NO] concentration; different thermodynamic models of predicting the nitrogen oxides NO formation. The numerical simulation of the transport processes for momentum, mass and heat being solved simultaneously in the united equations’ system with the chemical kinetics equations in frame of GRI methane combustion mechanism and NO formation calculated afterwards as “postprocessor” allow calculating the absolute actual [CO] and [NO] concentrations in dependence on combustion operative conditions and on design of furnace facilities. Prediction in frame of thermodynamic equilibrium state for combustion products ensures only evaluation of the relative value of [NO] concentration by wet combustion the gas with humid air regarding that in case of dry air – oxidant. We have developed the methodology and have revealed the results of numerical simulation of impact of the relative humidity of atmospheric air on harmful gases formation. Range of relative air humidity under calculations of atmospheric air under impact on [NO] and [CO] concentrations at the furnace chamber exit makes φ = 0 – 100%. The results of CFD modeling have been verified both by author’s experimental data and due comparing with the trends stated in world literature. We have carried out the complex of the experimental investigations regarding atmospheric air humidification impact on flame structure and environmental characteristics at natural gas combustion with premixed flame formation in open air. The article also proposes the methodology for evaluation of the nitrogen oxides formation in dependence on moisture content of burning mixture. The results of measurements have been used for verification the calculation data. Coincidence of relative change the NO (NOx) yield due humidification the combustion air revealed by means of CFD prediction has confirmed the qualitative and the quantitative correspondence of physical and chemical kinetics mechanisms and the CFD modeling procedures with the processes to be studied. A sharp, more than an order of reduction in NO emissions and simultaneously approximately a two-fold decrease in the CO concentration during combustion of the methane-air mixture under conditions of humidification of the combustion air to a saturation state at a temperature of 325 K.

Download Full-text