Lecture

Basic Introduction into Catalysis II

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In course

ChE-410: Catalysis for emission control and energy processes

The course is an introduction to heterogeneous catalysis for environmental protection and energy production. It focuses on catalytic exhaust gas cleaning as well as gaseous and liquid fuel production. The course content is intensified in experimental exerc ...

Description

This lecture covers the fundamental concepts of catalysis, including the role of catalysts in breaking chemical bonds, molecular orbital theory, formation of electron bands, bonding in metals, and molecular adsorption on d-metals. It also discusses infrared spectroscopy of gas phase and adsorbed molecules, dissociative adsorption of H2, and the kinetics of catalytic reactions. The Langmuir adsorption isotherm and Langmuir-Hinshelwood kinetics are explained, along with the simulation of pressure dependence on reaction rates.

Instructor

Oliver Kröcher

Expertise Catalysis, Sustainable Energy Carriers from CO₂ and Biomass, Emission Control, Environmental Chemistry, Materials Chemistry Mission The Group for Sustainable Energy Carriers (GSE) at EPFL works on the development of catalytic processes for the production and use of carbon-neutral energy carriers and intermediates. Current Work Small-scale ammonia synthesis, using induction-heating and sorption-enhancement. Oliver Kröcher was born in Germany and received his Diploma in chemistry from the University

Official source

Ontological neighbourhood

Chemistry

Inorganic chemistry: Coordination chemistry

Related concepts (32)

Chemical bond

A chemical bond is a lasting attraction between atoms or ions that enables the formation of molecules, crystals, and other structures. The bond may result from the electrostatic force between oppositely charged ions as in ionic bonds, or through the sharing of electrons as in covalent bonds. The strength of chemical bonds varies considerably; there are "strong bonds" or "primary bonds" such as covalent, ionic and metallic bonds, and "weak bonds" or "secondary bonds" such as dipole–dipole interactions, the London dispersion force, and hydrogen bonding.

Chemical reaction

A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur.

Reaction rate constant

In chemical kinetics, a reaction rate constant or reaction rate coefficient (k) is a proportionality constant which quantifies the rate and direction of a chemical reaction by relating it with the concentration of reactants. For a reaction between reactants A and B to form a product C, where A and B are reactants C is a product a, b, and c are stoichiometric coefficients, the reaction rate is often found to have the form: Here k is the reaction rate constant that depends on temperature, and [A] and [B] are the molar concentrations of substances A and B in moles per unit volume of solution, assuming the reaction is taking place throughout the volume of the solution.

Rate equation

In chemistry, the rate law or rate equation for a chemical reaction is a mathematical equation that links the rate of forward reaction with the concentrations or pressures of the reactants and constant parameters (normally rate coefficients and partial reaction orders). For many reactions, the initial rate is given by a power law such as where [\mathrm{A}] and [\mathrm{B}] express the concentration of the species \mathrm{A} and \mathrm{B}, usually in moles per liter (molarity, M).

Reaction mechanism

In chemistry, a reaction mechanism is the step by step sequence of elementary reactions by which overall chemical reaction occurs. A chemical mechanism is a theoretical conjecture that tries to describe in detail what takes place at each stage of an overall chemical reaction. The detailed steps of a reaction are not observable in most cases. The conjectured mechanism is chosen because it is thermodynamically feasible and has experimental support in isolated intermediates (see next section) or other quantitative and qualitative characteristics of the reaction.

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