High Temperature Vapors: Science and TechnologyHigh Temperature Vapors: Science and Technology focuses on the relationship of the basic science of high-temperature vapors to some areas of discernible practical importance in modern science and technology. The major high-temperature problem areas selected for discussion include chemical vapor transport and deposition; the vapor phase aspects of corrosion, combustion, and energy systems; and extraterrestrial high-temperature species. This book is comprised of seven chapters and begins with an introduction to the nature of the high-temperature vapor state, the scope and literature of high-temperature vapor-phase chemistry, and the role of high-temperature vapors in materials science. The discussion then turns to gas-solid reactions with vapor products; chemical vapor transport and deposition; vapor-phase aspects of corrosion at high temperature; and flames and combustion. High-temperature vapor-phase processes associated with gas turbine systems are also considered. The final chapter is devoted to the chemistry of high-temperature species in space. This monograph should serve as a valuable reference for undergraduate and graduate students, as well as scientists in fields such as chemistry, physics, materials science, and metallurgy. |
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Results 6-10 of 57
Page 40
... kcal mol-1 for H2 on Pt, and this is indicative of electron transfer and chemical bond formation at the surface. However, the adsorption process is still reversible. This type of interaction can be rationalized in terms of a molecular ...
... kcal mol-1 for H2 on Pt, and this is indicative of electron transfer and chemical bond formation at the surface. However, the adsorption process is still reversible. This type of interaction can be rationalized in terms of a molecular ...
Page 42
... 1—80 kcal mol-1 are found but many of the reactions studied have values in the region of 20 kcal mol“. Table 2.1 gives examples of activation energies for the carbothermic chlorination of metal oxides by reactions such as, Zr02(s) + 2C1 ...
... 1—80 kcal mol-1 are found but many of the reactions studied have values in the region of 20 kcal mol“. Table 2.1 gives examples of activation energies for the carbothermic chlorination of metal oxides by reactions such as, Zr02(s) + 2C1 ...
Page 43
... 1) Oxide (kcal mol—l) F8g03 59. 1 F810; 26. 0 Zl'Oa 55. l ZrSiOi 23.3 S1102 45 .0 TiO¢ 21. 7 Nb205 44 .0 ZrSi04 18.0 TiOa 36. 4 TiOg 16. 6 T8205 31 .0 processes is revealed by the wide variation of activation energies determined for the ...
... 1) Oxide (kcal mol—l) F8g03 59. 1 F810; 26. 0 Zl'Oa 55. l ZrSiOi 23.3 S1102 45 .0 TiO¢ 21. 7 Nb205 44 .0 ZrSi04 18.0 TiOa 36. 4 TiOg 16. 6 T8205 31 .0 processes is revealed by the wide variation of activation energies determined for the ...
Page 57
... kcal mol—1 for NiF and 39 kcal mol-1 for NiFg. These are much lower values than those for bulk sublimation where the heat of sublimation of NiF2, for instance, is about 78 kcal mol—l. Analogous results were obtained for the Bl'g—NI ...
... kcal mol—1 for NiF and 39 kcal mol-1 for NiFg. These are much lower values than those for bulk sublimation where the heat of sublimation of NiF2, for instance, is about 78 kcal mol—l. Analogous results were obtained for the Bl'g—NI ...
Page 61
... one finds the following reactions ... kcal mol“, AF; = —38.2 kcal mol“, and AF; = —32.9 kcal mol-l. Hence the decomposition of the condensed hydroxide [reaction (2)] is much more favorable than its nondissociative vaporization [reaction (1) ...
... one finds the following reactions ... kcal mol“, AF; = —38.2 kcal mol“, and AF; = —32.9 kcal mol-l. Hence the decomposition of the condensed hydroxide [reaction (2)] is much more favorable than its nondissociative vaporization [reaction (1) ...
Contents
1 | |
37 | |
Chapter 3 Chemical Vapor Transport and Deposition | 91 |
Chapter 4 VaporPhase Aspects of Corrosion at High Temperature | 212 |
Chapter 5 Combustion | 226 |
Chapter 6 Energy Systems | 386 |
Chapter 7 Chemistry of High Temperature Species in Space | 427 |
References | 437 |
Index | 473 |
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addition alkali metal atoms basic bond dissociation energies bond energies Bulewicz calculated Chapter Chem chemical kinetic chemical reaction chemistry chloride coefficient combustion complex components composition concentration condensed considered corrosion defined determined discussion dissociation energies effect electron emission endothermic enthalpy entropy equilibrium constant example experimental fire flame flow fluorides flux formation free energy fuel gas—solid gases given H-atom halogen heat Hence high temperature species high temperature vapors hydroxide indicated inhibition inhibitor interaction involving ionization ions kcal kcal mol-1 kinetic mass spectrometric materials metal halide metal oxide mole mole fraction molecular species NaCl observed oxide oxygen Padley partial pressure phase plasma premixed present profiles radical reactants reaction rates reaction zone reactor recent recombination reduced region relatively rocket Section significant solid solubility specific spectroscopic stability sufficiently Sugden surface Table techniques thermal thermodynamic thermodynamic equilibrium tion vapor deposition vapor species vapor-phase volatile