Hydrogen Sulfide-Resistant Bifunctional Catalysts for the Steam Reforming of Methane: Activity and Structural Evolution View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2018-01

AUTHORS

G. I. Konstantinov, S. S. Kurdyumov, Yu. V. Maksimov, O. V. Bukhtenko, M. V. Tsodikov

ABSTRACT

Results are presented from studying an iron–nickel catalyst for the steam reforming of methane, synthesized by epitaxial coating on the surface of spherical pellets of commercial γ-Al2O3. It is shown the catalyst is resistant to the presence of hydrogen sulfide in a steam–gas mixture. The degree of conversion of methane during reforming is close to equilibrium at a pressure of 2.0 MPa, a temperature of 800°C, a ratio of Н2О: СН4 = 2: 1, a feedstock hourly space velocity (FHSV) of 6000 h−1, and a H2S concentration of 30 ppm. The structural evolution and phase state of the active components of the system are studied via X-ray diffraction analysis, transmission electron microscopy (TEM), and Mössbauer spectroscopy. The formation of paramagnetic iron oxide clusters tightly bound to the structure of the support, and of FeNi3 iron–nickel alloy particles on the surface of the catalyst, is responsible for the polyfunctional properties of the catalyst, which displays high activity in both the steam reforming of methane and the oxidative decomposition of hydrogen sulfide to elemental sulfur. More... »

PAGES

1-8

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s2070050418010063

DOI

http://dx.doi.org/10.1134/s2070050418010063

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1103155297


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