Publication

Electrochemical promotion of RuO2-catalysts for the gas phase combustion of C2H4

Christos Comninellis
2000
Journal Articles

Abstract

The electrochem. promotion of RuO2 catalysts interfaced with yttria stabilized zirconia was studied for the combustion of ethylene. The complete oxidn. of ethylene can be described by an Eley-Rideal type mechanism. In situ work function measurements were used to proof the mechanism. A linear dependence between the catalyst work function and the surface coverage of the only adsorbed reactant, chemisorbed oxygen, was found. Cyclic voltammetric measurements were used to study the RuO2/YSZ interface. The electrochem. active zone was located at the RuO2/YSZ interface and next to the three-phase boundary with only a small extension on the gas-exposed catalyst surface. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/783b0784-b681-441d-abf8-3b488e4f9c5d

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Christos Comninellis
2000
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/783b0784-b681-441d-abf8-3b488e4f9c5d

About this result

Related concepts (32)

Heterogeneous catalysis

Heterogeneous catalysis is catalysis where the phase of catalysts differs from that of the reactants or products. The process contrasts with homogeneous catalysis where the reactants, products and catalyst exist in the same phase. Phase distinguishes between not only solid, liquid, and gas components, but also immiscible mixtures (e.g. oil and water), or anywhere an interface is present. Heterogeneous catalysis typically involves solid phase catalysts and gas phase reactants.

Catalysis

Catalysis (kəˈtæləsɪs) is the process of change in rate of a chemical reaction by adding a substance known as a catalyst (ˈkætəlɪst). Catalysts are not consumed by the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycles quickly, very small amounts of catalyst often suffice; mixing, surface area, and temperature are important factors in reaction rate. Catalysts generally react with one or more reactants to form intermediates that subsequently give the final reaction product, in the process of regenerating the catalyst.

Chemisorption

Chemisorption is a kind of adsorption which involves a chemical reaction between the surface and the adsorbate. New chemical bonds are generated at the adsorbent surface. Examples include macroscopic phenomena that can be very obvious, like corrosion, and subtler effects associated with heterogeneous catalysis, where the catalyst and reactants are in different phases. The strong interaction between the adsorbate and the substrate surface creates new types of electronic bonds.

Related publications (12)

Electrochemical promotion of RuO2-catalysts for the gas phase combustion of C2H4

Chat with Graph Search

Modern Trends in Catalyst and Process Design for Alkyne Hydrogenations

An experimental setup combining a highly sensitive detector for reaction products with a mass-selected cluster source and a low-temperature STM for advanced nanocatalysis measurements

Mathematical modelling of the unsteady-state oxidation of nickel gauze catalysts