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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Page 21
... endothermic vaporization processes such as. As). = M,. A(s). = D. will have similar entropies (per mole of vapor species) and this has been verified empirically; so that we have ASM 2 ASD. Therefore, V. Basic Concepts and Controlling ...
... endothermic vaporization processes such as. As). = M,. A(s). = D. will have similar entropies (per mole of vapor species) and this has been verified empirically; so that we have ASM 2 ASD. Therefore, V. Basic Concepts and Controlling ...
Page 25
... endothermic process, E is usually equal to—or slightly greater than—the equilibrium reaction enthalpy. Activation energies of about 20—30 kcal mol-1 are quite common and, in this case, temperatures of about 1000 K are sufficiently high ...
... endothermic process, E is usually equal to—or slightly greater than—the equilibrium reaction enthalpy. Activation energies of about 20—30 kcal mol-1 are quite common and, in this case, temperatures of about 1000 K are sufficiently high ...
Page 62
... endothermic than for W03 by about 24 kcal moi—1. Hence, for reaction (5) : AH5 ~ AH. + 24 ~ 64 kcal mol-l. The entropy change would be similar for both reactions (4) and (5). It, therefore, follows from the above differences in AH 5 and ...
... endothermic than for W03 by about 24 kcal moi—1. Hence, for reaction (5) : AH5 ~ AH. + 24 ~ 64 kcal mol-l. The entropy change would be similar for both reactions (4) and (5). It, therefore, follows from the above differences in AH 5 and ...
Page 65
... endothermic, and K will therefore increase with increasing temperature. That is, the production of metal dihydroxide vapor is favored by high temperatures. Most of the dihydroxide species indicated in the Fig. 2.6 have yet to be ...
... endothermic, and K will therefore increase with increasing temperature. That is, the production of metal dihydroxide vapor is favored by high temperatures. Most of the dihydroxide species indicated in the Fig. 2.6 have yet to be ...
Page 68
... endothermic character of this process indicates that the formation of the hydroxide is favored by an increase in temperature, as shown in Fig. 2.7. If one considers the enthalpy and entropy associated with introducing the condensed ...
... endothermic character of this process indicates that the formation of the hydroxide is favored by an increase in temperature, as shown in Fig. 2.7. If one considers the enthalpy and entropy associated with introducing the condensed ...
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