Kinetics of thermolysis of lanthanum nitrate with hexamethylenetetramine: Crystal structure, TG–DSC, impact and friction sensitivity studies, Part-96

• Lanthanum metal nitrate complex with hexamethylenetetramine has been prepared.
• Crystal structure of this complex was confirmed by X-ray crystallography.
• Thermal analysis of this complex has been done by TG and TG–DSC.
• Complex was found to be insensitive towards impact and friction sensitivities.
• Kinetics has been evaluated by using model fitting and iso-conversional methods.

The development of high energetic materials includes process ability and the ability to attain insensitive munitions (IM). This paper investigates the preparation of lanthanum metal nitrate complex of hexamethylenetetramine in water at room temperature. This complex of molecular formulae [La (NO3)2(H2O)6] (2HMTA) (NO3−) (H2O) was characterized by X-ray crystallography. Thermal decomposition was investigated using TG, TG–DSC and ignition delay measurements. Kinetic analysis of isothermal TG data has been investigated using model fitting methods as well as model free isoconversional methods. The sensitivity measurements towards mechanical destructive stimuli such as impact and friction were carried out and the complex was found to be insensitive. In order to identify the end product of thermolysis, X-ray diffraction patterns of end product was carried out which proves the formation of La2O3.

Lanthanum complex crystallized in monoclinic crystal system with space group P21/n (No. 14) and has coordination number 10.Figure optionsDownload as PowerPoint slide