Combined magnesia, ceria and nickel catalyst supported over γ-alumina doped with titania for dry reforming of methane

Ahmed Sadeq Al-Fatesh, Samsudeen Olajide Kasim, Ahmed Aidid Ibrahim, Anis Hamza Fakeeha, Ahmed Elhag Abasaeed, Rasheed Alrasheed, Rawan Ashamari, Abdulaziz Bagabas

Research output: Contribution to journalJournal articlepeer-review

7 Scopus citations

Abstract

This study investigated dry reforming of methane (DRM) over combined catalysts supported on γ-Al 2 O 3 support doped with 3.0 wt. % TiO 2 . Physicochemical properties of all catalysts were determined by inductively coupled plasma/mass spectrometry (ICP-MS), nitrogen physisorption, X-ray diffraction, temperature programmed reduction/oxidation/desorption/pulse hydrogen chemisorption, thermogravimetric analysis, and scanning electron microscopy. Addition of CeO 2 and MgO to Ni strengthened the interaction between the Ni and the support. The catalytic activity results indicate that the addition of CeO 2 and MgO to Ni did not reduce carbon deposition, but improved the activity of the catalysts. Temperature programmed oxidation (TPO) revealed the formation of carbon that is mainly amorphous and small amount of graphite. The highest CH 4 and CO 2 conversion was found for the catalyst composed of 5.0 wt. % NiO-10.0 wt. % CeO 2 /3.0 wt. %TiO 2 -γ-Al 2 O 3 (Ti-CAT-II), resulting in H 2 /CO mole ratio close to unity. The optimum reaction conditions in terms of reactant conversion and H 2 /CO mole ratio were achieved by varying space velocity and CO 2 /CH 4 mole ratio.

Original languageEnglish
Article number188
JournalCatalysts
Volume9
Issue number2
DOIs
StatePublished - Feb 2019

Keywords

  • CeO
  • CH
  • Dry reforming
  • MgO
  • Ni
  • TiO

Fingerprint

Dive into the research topics of 'Combined magnesia, ceria and nickel catalyst supported over γ-alumina doped with titania for dry reforming of methane'. Together they form a unique fingerprint.

Cite this