Abstract
The thermal decomposition of ammonium uranate has been studied by infrared spectroscopy, and X-ray diffraction. It has been show that ammonia remains in the solid until substantially 350 Centigrade degrees, when gaseous nitrogen is released. It is concluded that compounds derived from the calcination of ammonium uranate at atmospheric pressure, produced amorphous U O{sub 3} at about 350-400 Centigrade degrees and transform to U{sub 3} O{sub 8} via {alpha} - U O{sub 3} and/or {alpha} - U O{sub 3}. The object of this study was to obtain reliable fundamental information regarding the character of the pure carbon monoxide-ammonium uranate-uranium trioxide-uranium octaoxide reaction, in the range of temperatures that has been used in commercial reduction processes. Through the use of high-purity samples and by the proper control of incidental variable, this object was realized. (Author).
Citation Formats
Hernandez R, R.
Preparation of uranium dioxide by thermal decomposition and direct reduction of ammonium uranate; Preparacion del dioxido de uranio por descomposicion termica y reduccion directa del uranato de amonio.
Mexico: N. p.,
1995.
Web.
Hernandez R, R.
Preparation of uranium dioxide by thermal decomposition and direct reduction of ammonium uranate; Preparacion del dioxido de uranio por descomposicion termica y reduccion directa del uranato de amonio.
Mexico.
Hernandez R, R.
1995.
"Preparation of uranium dioxide by thermal decomposition and direct reduction of ammonium uranate; Preparacion del dioxido de uranio por descomposicion termica y reduccion directa del uranato de amonio."
Mexico.
@misc{etde_172713,
title = {Preparation of uranium dioxide by thermal decomposition and direct reduction of ammonium uranate; Preparacion del dioxido de uranio por descomposicion termica y reduccion directa del uranato de amonio}
author = {Hernandez R, R}
abstractNote = {The thermal decomposition of ammonium uranate has been studied by infrared spectroscopy, and X-ray diffraction. It has been show that ammonia remains in the solid until substantially 350 Centigrade degrees, when gaseous nitrogen is released. It is concluded that compounds derived from the calcination of ammonium uranate at atmospheric pressure, produced amorphous U O{sub 3} at about 350-400 Centigrade degrees and transform to U{sub 3} O{sub 8} via {alpha} - U O{sub 3} and/or {alpha} - U O{sub 3}. The object of this study was to obtain reliable fundamental information regarding the character of the pure carbon monoxide-ammonium uranate-uranium trioxide-uranium octaoxide reaction, in the range of temperatures that has been used in commercial reduction processes. Through the use of high-purity samples and by the proper control of incidental variable, this object was realized. (Author).}
place = {Mexico}
year = {1995}
month = {Dec}
}
title = {Preparation of uranium dioxide by thermal decomposition and direct reduction of ammonium uranate; Preparacion del dioxido de uranio por descomposicion termica y reduccion directa del uranato de amonio}
author = {Hernandez R, R}
abstractNote = {The thermal decomposition of ammonium uranate has been studied by infrared spectroscopy, and X-ray diffraction. It has been show that ammonia remains in the solid until substantially 350 Centigrade degrees, when gaseous nitrogen is released. It is concluded that compounds derived from the calcination of ammonium uranate at atmospheric pressure, produced amorphous U O{sub 3} at about 350-400 Centigrade degrees and transform to U{sub 3} O{sub 8} via {alpha} - U O{sub 3} and/or {alpha} - U O{sub 3}. The object of this study was to obtain reliable fundamental information regarding the character of the pure carbon monoxide-ammonium uranate-uranium trioxide-uranium octaoxide reaction, in the range of temperatures that has been used in commercial reduction processes. Through the use of high-purity samples and by the proper control of incidental variable, this object was realized. (Author).}
place = {Mexico}
year = {1995}
month = {Dec}
}