1. Definition and Classification of Solid Acids and Bases. 2. Determination of Acidic and Basic Properties on Solid Surfaces. Acidic property. Basic property. Acid-base property. 3. Acid and Base Centers: Structure and Acid-Base Property. Metal oxides. Mixed metal oxides. Clay minerals. Zeolites. Heteropoly compounds. Ion-exchange resins. Metal sulfides. Metal sulfates and phosphates. Superacids. Superbases. 4. Catalytic Activity and Selectivity. Isomerization. Alkylation. Acylation. Transalkylation of alkylaromatics. Hydration of olefins. Conversion of methanol into hydrocarbons. Dehydration. Dehydrohalogenation. Oligomerization and polymerization. Esterification. Hydrolysis. Catalytic cracking. Hydrocracking (hydrogenolysis). Catalytic reforming. Hydrogenation. Dehydrogenation. Oxidation. Miscellaneous. 5. Deactivation and Regeneration. Deactivation. Coke deposition. Coke deposition and deactivation. Regeneration. 6. Related Topics. Gas sensors. Adsorbents. Pressure sensitive recording paper. Cosmetic pigments. Subject Index. Catalyst Index.