Premium
Ni Catalysts Supported on Mesoporous Nanocrystalline Magnesium Silicate in Dry and Steam Reforming Reactions
Author(s) -
Ghods Bahare,
Rezaei Mehran,
Meshkani Fereshteh
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201500475
Subject(s) - carbon dioxide reforming , steam reforming , catalysis , methane reformer , methane , chemical engineering , materials science , mesoporous material , nickel , nanocrystalline material , magnesium , syngas , inorganic chemistry , hydrogen production , chemistry , metallurgy , nanotechnology , organic chemistry , engineering
Abstract Mesoporous nanocrystalline MgSiO 3 with high surface area was synthesized by a hydrothermal method and employed as support in dry and steam reforming of methane. Ni/MgSiO 3 catalysts were prepared by an impregnation method and characterized by different techniques. N 2 adsorption analysis indicated that addition of nickel shifted the pore size distributions to smaller sizes. Temperature‐programmed reduction analysis revealed that a higher nickel loading enhanced the reducibility of the catalyst. The catalytic performance was improved with increasing the nickel content. The Ni/MgSiO 3 catalyst exhibited high stability in dry reforming but methane conversion declined with time‐on‐stream in the steam reforming reaction. Temperature‐programmed oxidation profiles of spent catalysts indicated that the high amount of carbon deposited on the catalyst surface in dry and steam reforming was assigned to whisker‐type carbon.