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Perovskite NaCeTi 2 O 6 ‐Supported Ni Catalysts for CH 4 Steam Reforming
Author(s) -
Zhang Shenghong,
Muratsugu Satoshi,
Ishiguro Nozomu,
Ohkoshi Shinichi,
Tada Mizuki
Publication year - 2012
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.201200239
Subject(s) - catalysis , materials science , perovskite (structure) , steam reforming , temperature programmed reduction , desorption , carbon fibers , decomposition , x ray absorption spectroscopy , inorganic chemistry , nuclear chemistry , analytical chemistry (journal) , absorption spectroscopy , chemistry , hydrogen production , adsorption , crystallography , biochemistry , physics , organic chemistry , quantum mechanics , chromatography , composite number , composite material
Perovskite NaCeTi 2 O 6 (NCT)‐supported Ni catalysts were prepared and examined for the steam reforming of methane (SRM) with a low H 2 O/CH 4 ratio (1:1), and their structures were characterized by means of powder XRD, energy dispersive X‐ray spectroscopy high resolution TEM, temperature‐programmed desorption of CO 2 , temperature‐programmed reduction with H 2 , Ni K‐edge/Ce L III ‐edge X‐ray absorption near edge structure spectroscopy and extended X‐ray absorption fine structure . A 4 wt % Ni/NCT catalyst exhibited higher activity than 4 wt % Ni/TiO 2 , Ni/(CeO 2 +TiO 2 ), and Ni/Ce 2 O 3 catalysts for SRM reactions at 973 K, and better resistance to carbon deposition was observed on 4 wt % Ni/NCT compared to 4 wt % Ni/CeO 2 . It is suggested that the characteristic performance of the Ni/NCT catalysts for the SRM reactions are related to the basic character and oxygen conducting behavior of NCT to control the balance of CH 4 decomposition and carbon gasification with steam on the surfaces of the Ni/NCT catalysts.