Influence of coating parameters and calcination temperature on monolithic alumina supported nickel catalysts for methanation

Sarah Reiter

Influence of coating parameters and calcination temperature on monolithic alumina supported nickel catalysts for methanation

Titel in Übersetzung: Einfluss von Beschichtungsparametern und Kalzinierungstemperatur auf Aluminiumoxid basierte Nickelkatalysatoren mit Wabenstruktur

Sarah Reiter

Lehrstuhl für Verfahrenstechnik des industriellen Umweltschutzes (500)

Publikation: Thesis / Studienabschlussarbeiten und Habilitationsschriften › Masterarbeit

Abstract

Für die katalytische Methanisierung werden am Lehrstuhl für Verfahrenstechnik des industriellen Umweltschutzes der Montanuniversität Leoben Nickelkatalysatoren mit Wabenstruktur verwendet. Bisher werden die Katalysatoren auf Cordieritträgern durch Wash-Coat-Beschichtung und anschließender Nassimpregnierung mit Nickelnitrat unter Laborbedingungen hergestellt. Da für dieses Trägermaterial geringe Beladungen mit katalytisch aktivem Nickel erzielt werden, stellt eine aus Aluminiumoxid bestehende Struktur eine vielversprechende Alternative dar. Im Rahmen dieser Arbeit wird basierend auf einer umfangreichen Literaturrecherche zu Ni/Al2O3-Systemen eine grundlegende Beschichtungsmethodik für Aluminiumoxid-Waben entwickelt. Ein Präparationsverfahren aus vier Beschichtungen mit Nickelnitrat und Kalzinierung bei unterschiedlichen Temperaturen wird erarbeitet. Ein Vergleich der Cordierit- zu Aluminiumoxid-Waben wird vorgenommen. Da für Aluminiumoxid-Strukturen erhöhte Nickelbeladungen erreicht werden können, wird eine bessere Performance und COx-Umsatz während der katalytischen Methanisierung beobachtet. Basierend auf der Performance wird die Kalzinierungstemperatur als einer der einflussreichsten Parameter auf die Aktivität der Waben und ihre Langzeitstabilität identifiziert. Aufbauend auf den Erkenntnissen dieser Arbeit wird ein Überblick über Möglichkeiten zur Weiterentwicklung des Beschichtungsverfahrens für Aluminiumoxid-Strukturen gegeben, um hochbeladene und aktive Katalysatorsysteme zu erhalten.

Titel in Übersetzung	Einfluss von Beschichtungsparametern und Kalzinierungstemperatur auf Aluminiumoxid basierte Nickelkatalysatoren mit Wabenstruktur
Originalsprache	Englisch
Qualifikation	Dipl.-Ing.
Gradverleihende Hochschule	Montanuniversität
Betreuer/-in / Berater/-in	Wolf-Zöllner, Philipp, Mitbetreuer (intern) Lehner, Markus, Betreuer (intern)
Datum der Bewilligung	30 Juni 2023
Publikationsstatus	Veröffentlicht - 2023

Bibliographische Notiz

gesperrt bis 01-05-2028

Schlagwörter

Methanisierung
SNG
katalytische Methanisierung
Waben
monolithische Katalysatoren
Nickel-Aluminiumoxid Katalysatoren
Kalzinierungstemperatur
Nass-Imprägnierung
Nickel Katalysatoren
Aluminiumoxid-Träger
Versuchsanlage
Beschichtungsverfahren

Dieses zitieren

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title = "Influence of coating parameters and calcination temperature on monolithic alumina supported nickel catalysts for methanation",

abstract = "For CO2 methanation nickel-based catalysts with honeycomb monoliths are required at the Chair of Process Technology and Industrial Environmental Protection at Montanuniversit{\"a}t Leoben. Prior to this work cordierite-based catalysts are prepared via wash-coating and subsequent wet impregnation with nickel nitrate under laboratory conditions. As low catalyst loadings are obtained for this material, an alternative structure based on aluminum oxide shows potential. Within the framework of this master thesis, a general coating procedure is developed based on an extensive literature review on Ni/Al2O3 catalyst systems. A preparation method consisting of four coating procedures with nickel nitrate and calcination at varying temperatures is introduced. Methanation experiments in different setups show the development from cordierite to alumina monoliths and their performance. For the alumina honeycombs increased nickel loadings are achieved. Consequently, they perform superior during catalytic methanation and a high COx conversion is obtained. The calcination temperature is identified as one of the most influential parameters on the performance and long-term stability of the honeycombs during CO2 methanation. Based on the results obtained within this work an overview on further developments of the coating procedures for alumina monolithic structures is given, to obtain highly loaded and active catalyst systems.",

keywords = "Methanisierung, SNG, katalytische Methanisierung, Waben, monolithische Katalysatoren, Nickel-Aluminiumoxid Katalysatoren, Kalzinierungstemperatur, Nass-Impr{\"a}gnierung, Nickel Katalysatoren, Aluminiumoxid-Tr{\"a}ger, Versuchsanlage, Beschichtungsverfahren, methanation, SNG, catalytic methanation, honeycombs, monolithic catalysts, nickel-alumina catalyst systems, calcination temperature, wet impregnation, nickel catalyst, alumina support, pilot plant, coating strategies",

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TY - THES

T1 - Influence of coating parameters and calcination temperature on monolithic alumina supported nickel catalysts for methanation

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N1 - embargoed until 01-05-2028

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N2 - For CO2 methanation nickel-based catalysts with honeycomb monoliths are required at the Chair of Process Technology and Industrial Environmental Protection at Montanuniversität Leoben. Prior to this work cordierite-based catalysts are prepared via wash-coating and subsequent wet impregnation with nickel nitrate under laboratory conditions. As low catalyst loadings are obtained for this material, an alternative structure based on aluminum oxide shows potential. Within the framework of this master thesis, a general coating procedure is developed based on an extensive literature review on Ni/Al2O3 catalyst systems. A preparation method consisting of four coating procedures with nickel nitrate and calcination at varying temperatures is introduced. Methanation experiments in different setups show the development from cordierite to alumina monoliths and their performance. For the alumina honeycombs increased nickel loadings are achieved. Consequently, they perform superior during catalytic methanation and a high COx conversion is obtained. The calcination temperature is identified as one of the most influential parameters on the performance and long-term stability of the honeycombs during CO2 methanation. Based on the results obtained within this work an overview on further developments of the coating procedures for alumina monolithic structures is given, to obtain highly loaded and active catalyst systems.

AB - For CO2 methanation nickel-based catalysts with honeycomb monoliths are required at the Chair of Process Technology and Industrial Environmental Protection at Montanuniversität Leoben. Prior to this work cordierite-based catalysts are prepared via wash-coating and subsequent wet impregnation with nickel nitrate under laboratory conditions. As low catalyst loadings are obtained for this material, an alternative structure based on aluminum oxide shows potential. Within the framework of this master thesis, a general coating procedure is developed based on an extensive literature review on Ni/Al2O3 catalyst systems. A preparation method consisting of four coating procedures with nickel nitrate and calcination at varying temperatures is introduced. Methanation experiments in different setups show the development from cordierite to alumina monoliths and their performance. For the alumina honeycombs increased nickel loadings are achieved. Consequently, they perform superior during catalytic methanation and a high COx conversion is obtained. The calcination temperature is identified as one of the most influential parameters on the performance and long-term stability of the honeycombs during CO2 methanation. Based on the results obtained within this work an overview on further developments of the coating procedures for alumina monolithic structures is given, to obtain highly loaded and active catalyst systems.

KW - Methanisierung

KW - SNG

KW - katalytische Methanisierung

KW - Waben

KW - monolithische Katalysatoren

KW - Nickel-Aluminiumoxid Katalysatoren

KW - Kalzinierungstemperatur

KW - Nass-Imprägnierung

KW - Nickel Katalysatoren

KW - Aluminiumoxid-Träger

KW - Versuchsanlage

KW - Beschichtungsverfahren

KW - methanation

KW - SNG

KW - catalytic methanation

KW - honeycombs

KW - monolithic catalysts

KW - nickel-alumina catalyst systems

KW - calcination temperature

KW - wet impregnation

KW - nickel catalyst

KW - alumina support

KW - pilot plant

KW - coating strategies

M3 - Master's Thesis

ER -