Characterization and Design of Zeolite Catalysts

Catalysts based on these microporous, aluminosilicate minerals are used by chemical companies in the interconversion of hydrocarbons and the alkylation of aromatic compounds. This book characterizes the specific properties of zeolites and aids catalyst design.

Catalysis and catalyst is a key technology to solve the problems in energy and environment issues to sustain our human society. We believe that comprehensive understanding of the catalysis and catalyst provides us a chance to develop a new catalyst and contributes greatly to our society. However, the ?eld of heterogeneous catalyst is dif?cultto study andstill stays behindmoredeveloped?elds ofchemistry such as organic and physical chemistries. This is a dilemma to the chemists who study the catalysis and catalyst. While we can accomplish the progress in the - dustrial application, the scienti?c understandingis not complete yet. A gap between the useful application and incomplete scienti?c understanding, however, becomes smaller and smaller in recent years. Because zeolites are ?ne crystals, and the structure is clearly known, the study on the catalysis using the zeolites is easier than those encountered in other catalysts such as metals and metal oxides. Very fortunately, zeolites provide us the strong acidity with the ?ne distribution which enables various useful catalytic reactions. When some metals and cations are loaded in close to the acid sites, these loadede- ments show extraordinarycharacters, and many catalytic reactions proceed thereon.

Summarizes the current knowledge on the characterization of Zeolite catalysts Gives a guidance to simulation calculations for catalysts Provides an overview of the application of catalysts Useful reference to researchers, chemical engineers and graduate students

Texte du rabat
Zeolites are microporous, aluminosilicate minerals commonly used as commercial adsorbents. Zeolite-based catalysts are used by industrial chemical companies in the interconversion of hydrocarbons and the alkylation of aromatic compounds. The current book deals with the characterization of specific properties of Zeolites and calculations for the design of catalysts. Measurements and utilization of solid acidity, shape selectivity, and loading properties, that are three prominent properties of a Zeolite catalyst, are treated in detail. These features concern chemical vapor deposition of silica, shape selectivity, loading properties, solid activity, Brønsted or Lewis character, ammonia temperature programmed desorption, control of the pore-opening size by chemical vapor deposition of silica and XAFS analysis of metals being highly dispersed inside and outside a framework.

Contenu
to Zeolite Science and Catalysis.- Solid Acidity of Zeolites.- IRMS-TPD Measurements of Acid Sites.- DFT Calculation of the Solid Acidity.- Catalytic Activity and Adsorption Property.- CVD of Silica for the Shape Selective Reaction.- Application of the CVD of Silica to the Shape Selective Reaction.- Zeolite Loading Property for Active Sites and XAFS Measurements.- Catalytic Reaction on the Palladium-Loaded Zeolites.