Publikace detail

Analysis of Ni species formed on zeolites, mesoporous silica and alumina supports and their catalytic behavior in the dry reforming of methane

Rok: 2017

Druh publikace: článek v odborném periodiku

Název zdroje: Reaction Kinetics Mechanisms and Catalysis

Název nakladatele: Springer

Místo vydání: Heidelberg

Strana od-do: 255-274

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Analýza částic Ni nanesených na zeolitech, mezoporézní silice a alumině a jejich katalytické chování při suchém reformování methanu	Bylo studováno katalytické chování částic niklu nanesených na vybraných typech zeolitů (MFI a FAU), mezoporézních materiálů (Al-MCM-41 a SBA-15) a aluminy při reakci suchého reformování methanu ve vztahu k jejich strukturním vlastnostem.	suché reformování; methan; nikl; katalýza; velikost částic
eng	Analysis of Ni species formed on zeolites, mesoporous silica and alumina supports and their catalytic behavior in the dry reforming of methane	The presented investigation is focused on the analysis of Ni species formed on microporous (zeolites MFI and FAU) and mesoporous materials (Al-MCM- 41 and SBA-15) and alumina supports and their catalytic behavior in the dry reforming of methane. The paper lays emphasis on the relationship between the catalytic behavior of Ni-based catalysts and their textural/structural properties. Ni-based catalysts were prepared by wet impregnation (11 wt% of Ni) followed by calcination in air and reduction in hydrogen. The properties of Ni-based catalysts were also compared prior and after the catalytic tests. The critical role was played by the high value of the specific surface area and the high strength of the interaction between the Ni species and the support, which both determined the high dispersion and stability of metal Ni-0 particles. Ni-Al-MCM-41 and Ni-SBA-15 showed the values of the conversion of CO2 and CH4 above 90% (stable during 12 h). Slightly lower values of the conversion of CO2 and CH4 were observed over Ni-Al2O3 (also stable during 12 h). In contrast to these materials, Ni-MFI and Ni-FAU exhibited the worse metallic Ni-0 particles dispersion and very bad catalytic behavior.	Dry reforming; Methane; Nickel; Catalysis; Particle size

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