Front Cover; Advances in Catalysis, Volume 22; Copyright Page; Contents; Contributors; Preface; Chapter 1. Hydrogenation and Isomerization over Zinc Oxide; I. Introduction; II. The Active Sites; III. Mechanism of Ethylene Hydrogenation; IV. Reactions with Propylene; V. Reactions of Butene; VI. Reactions of Acetylenes; VII. Concluding Remarks; References.; Chapter 2. Chemisorption Complexes and Their Role in Catalytic Reactions on Transition Metals; I. Introduction; II. General Formation of the Problem; III. Chemisorption Complexes; IV. Characterization of the Metal Surfaces. V. Concluding RemarksReferences; Chapter 3. Influence of Metal Particle Size in Nickel-on-Aerosil Catalysts on Surface Site Distribution, Catalytic Activity, and Selectivity; I. Introduction; II. Statistics of Surface Atoms and Surface Sites; III. Infrared Studies on the Adsorption of N2, CO, and CO2; IV. Deuteration and Exchange of Benzene; V. Conclusions; VI. Preparation and Characterization of Catalysts; References; Chapter 4. Adsorption and Catalysis on Evaporated Alloy Films; I. Introduction; II. Preparation of Alloy Films; III. Characterization of Alloy Films. IV. Adsorption and Catalysis on Alloy FilmsV. Conclusions; References; Chapter 5. Heat-Flow Microcalorimetry and Its Application to Heterogeneous Catalysis; I. Introduction; II. Principle of Heat-Flow Calorimetry; III. Some Heat-Flow Microcalorimeters That Can Be Used in Heterogeneous Catalysis Research; IV. Theory of Heat-Flow Calorimetry; V. Analysis of the Calorimetric Data; VI. Measurement of the Differential Heats of Gas-Solid Interactions; VII. Applications of Heat-Flow Microcalorimetry in Heterogeneous Catalysis; VIII. Conclusions; References. Chapter 6. Electron Spin Resonance in CatalysisI. Introduction; II. The Theoretical Basis; III. Experimental Considerations; IV. Applications; References; Appendix A : Quantum Mechanics for Spin Systems . .; Appendix B: Determination of Energy Levels from the Spin Hamiltonnian; Appendix C: The g Tensor; Appendix D : The Hyperfine Tensor; Author Index; Subject Index; Contents of Previous Volumes.