With time and patience the mulberry leaf becomes a silk gown. Chinese Proverb Lecture 5 Catalyst Materials, Properties and Preparation.

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Presentation transcript:

With time and patience the mulberry leaf becomes a silk gown. Chinese Proverb Lecture 5 Catalyst Materials, Properties and Preparation

Outline

Heterogeneous Catalyst Pt supported on alumina (a)

TEM of platinum supported on alumina

Components of a Typical Heterogeneous Catalyst

Examples of typical Heterogeneous Catalyst

Automotive Catalytic Converter

Components of a Typical Heterogeneous Catalyst

Active Catalytic Phases and Reactions They Typically Catalyze

Typical Physical Properties of Common Carrier (Supports)

Zeolites, the Crown Jewels of Catalysis Para-xylene in Zeolite Theta-1

Formation of three common zeolites from primary SiO 4 and AlO 4 tetrahedral units

Compositions and Limiting Pore Diameters for Common Zeolites

Mordenite

Molecular Sieves: Shape Selectivity

Major Commercial Catalytic Processes Using Zeolites [Vaughan, 1988].

Catalyst Design

Porosity versus Strength

Physical and Mechanical Properties: Definitions and Specifications

Distribution of solid, pore and void volumes in a typical catalyst particle

Pore Size Breakdown

Chemical Properties: Definitions and Specifications

Catalyst Acidity

Qualitative Ranking of Aqueous and Solid Acids (Listed in decreasing order of acid strength).

Dynamic (Catalytic) Properties of Catalysts: Definitions and Specifications.

Catalyst Preparation and Forming: General Scheme