Does Pelletizing Catalysts Influence the Efficiency Number of Activity Measurements? Spectrochemical Engineering Considerations for an Accurate Operando Study

Søren Birk Rasmussen, Susana Perez-Ferreras, Miguel A. Banares, Philippe Bazin, Marco Daturi

Research output: Contribution to journalJournal articleResearchpeer-review

326 Downloads (Pure)

Abstract

Porosity is a factor affecting catalyst efficiency in pelletized form. This implies that care should be taken with uncritically relating activity measurements from transmission operando FTIR to final catalyst performance. lithe pelletizing pressure is excessive, a destruction of the pore structure of, for example, support oxides might take place, which in turn affects the pore size distribution and the porosity of the catalyst, leading to the observation of lower activity values due to decreased catalyst efficiency. This phenomenon can also apply to conventional activity measurements, in the cases that pelletizing and recrushing of samples are performed to obtain adequate particle size fractions for the catalytic bed. A case study of an operand investigation of a V2O3-WO3/TiO2-sepiolite catalyst is used as an example, and simple calculations of the influence of catalyst activity and internal pore diffusion properties are considered in this paper for the evaluation of catalyst performance in, for example, operando reactors. Thus, it is demonstrated that with a pelletizing pressure of
Original languageEnglish
JournalA C S Catalysis
Volume3
Issue number1
Pages (from-to)86-94
ISSN2155-5435
DOIs
Publication statusPublished - 2013

Bibliographical note

© 2012 American Chemical Society

Fingerprint Dive into the research topics of 'Does Pelletizing Catalysts Influence the Efficiency Number of Activity Measurements? Spectrochemical Engineering Considerations for an Accurate Operando Study'. Together they form a unique fingerprint.

Cite this