Mechanochemical combustion

Mechanochemical combustion reactions 55 5. Applications of mechanically alloyed ... 

Our assumption is that the lower values obtained for nitrogen linked by this fixing method perhaps cannot be determined by the Kjeldahl method. Also, the products obtained mechanochemically and those of the combustion residue may have different structures. 

Example 11 Oxidation reaction In the course of mechanochemical treatment of either Ti or Zr in mechanoreactor with controlled atmosphere of O2, abrupt drop of pressure was detected after several hours of milling as a consequence of instant combustion reaction Ti -F O2 Ti02 (or Zr -F O2 Zr02). Pronounced deformation as well as crystallite size reduction proceeded the reaction of oxidation. Prolonged milling following the combustion reaction produced nanocrystalline oxide powder. 

In this book, we briefly examine the different types of reactions and methods employed in the synthesis of inorganic solid materials. Besides the traditional ceramic procedures, we discuss precursor methods, combustion method, topochemical reactions, intercalation reactions, ion-exchange reactions, alkali-flux method, sol-gel method, mechanochemical synthesis, microwave synthesis, electrochemical methods, pyrosol process, arc and skull methods and high-pressure methods. Hydrothermal and solvothermal syntheses are discussed separately and also in sections dealing with specific materials. Superconducting cuprates and intergrowth structures are discussed in separate sections. Synthesis of nanomaterials is dealt with in some detail. Synthetic methods for metal borides, carbides, nitrides, fluorides, sili-cides, phosphides and chalcogenides are also outlined. 

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