Dry Reforming of Methane – understanding metal support interactions and evaluation of regeneration protocols

Steib, Matthias

Chemie

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Original title:: Dry Reforming of Methane – understanding metal support interactions and evaluation of regeneration protocols
Translated title:: Trockenes Reformieren von Methan - Metall Träger Wechselwirkungen und Entwicklung neuer Prozesse zur Katalysatorregenerierung
Author:: Steib, Matthias
Year:: 2018
Document type:: Dissertation
Faculty/School:: Fakultät für Chemie
Advisor:: Lercher, Johannes A. (Prof. Dr.)
Referee:: Lercher, Johannes A. (Prof. Dr.); Klein, Harald (Prof. Dr.)
Language:: en
Subject group:: CIT Chemie-Ingenieurwesen, Technische Chemie, Biotechnologie
Keywords:: reforming, catalysis, catalyst regeneration
Translated keywords:: Reformieren, Katalyse, Regenerierung von Katalysatoren
TUM classification:: CHE 167d; CIT 325d
Abstract:: The role of the metal support interface for dry reforming of methane has been studied over supported Ni catalysts. The unique properties of zirconia lead to an efficient stabilization of small nanoparticles with enhanced metal support interface during catalysis and regeneration. Detailed examination of regeneration protocols with different gasifying agents revealed a kinetically controlled mechanism of coke removal and oxidation of the active metal and finally ensured stable operation of Ni based catalysts for methane dry reforming. «
The role of the metal support interface for dry reforming of methane has been studied over supported Ni catalysts. The unique properties of zirconia lead to an efficient stabilization of small nanoparticles with enhanced metal support interface during catalysis and regeneration. Detailed examination of regeneration protocols with different gasifying agents revealed a kinetically controlled mechanism of coke removal and oxidation of the active metal and finally ensured stable operation of Ni base... »
Translated abstract:: In dieser Arbeit wurde der Einfluss der Wechselwirkungen zwischen Metall und Träger an geträgerten Ni Katalysatoren untersucht. Dabei ermöglichten die besonderen Eigenschaften von ZrO₂ eine effiziente Stabilisierung kleiner Nanopartikel mit erhöhter Grenzfläche zwischen Ni und ZrO₂. Die Untersuchung unterschiedlicher Oxidationsmedien führte zur Entwicklung einer kinetisch kontrollierten Regenerierung von deaktivierten Katalysatoren und ermöglicht somit das Aufrechterhalten einer stabilen Aktivität von Ni/ZrO₂ für das trockene Reformieren von Methan.
WWW:: https://mediatum.ub.tum.de/?id=1356660
Date of submission:: 12.05.2017
Oral examination:: 26.02.2018
File size:: 3341153 bytes
Pages:: 99
Urn (citeable URL):: https://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:91-diss-20180226-1356660-1-7
Last change:: 07.03.2018
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