Premium
Effect of NiAl 2 O 4 Formation on Ni/Al 2 O 3 Stability during Dry Reforming of Methane
Author(s) -
Zhou Lu,
Li Lidong,
Wei Nini,
Li Jun,
Basset JeanMarie
Publication year - 2015
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201500379
Subject(s) - nial , calcination , catalysis , carbon dioxide reforming , methane , sintering , materials science , carbon fibers , chemical engineering , inorganic chemistry , metallurgy , intermetallic , chemistry , syngas , organic chemistry , composite material , composite number , alloy , engineering
A series of alumina‐supported Ni catalysts were prepared to examine their activity and carbon deposition during dry reforming of methane (DRM). With an increase in the final calcination temperature to T =900 °C to form exclusively NiAl 2 O 4 , a catalyst with strong metal–support interactions was obtained. During a long‐term DRM reaction (of about t =100 h) at T =700 °C and with CH 4 /CO 2 =1:1, reduced Ni (from NiAl 2 O 4 ) showed a high resistance to sintering and coking. The DRM kinetics behaviors of the catalysts calcined at different temperatures were also investigated. Carbon growth models were proposed to rationalize the different carbon morphologies observed on the catalysts.