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Foam‐Structured NiO‐MgO‐Al 2 O 3 Nanocomposites Derived from NiMgAl Layered Double Hydroxides In Situ Grown onto Nickel Foam: A Promising Catalyst for High‐Throughput Catalytic Oxymethane Reforming
Author(s) -
Chai Ruijuan,
Li Yakun,
Zhang Qiaofei,
Fan Songyu,
Zhang Zhiqiang,
Chen Pengjing,
Zhao Guofeng,
Liu Ye,
Lu Yong
Publication year - 2017
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.201601167
Subject(s) - catalysis , materials science , layered double hydroxides , nanocomposite , sintering , non blocking i/o , chemical engineering , nickel , thermal decomposition , mesoporous material , space velocity , syngas , coke , hydroxide , methane , calcination , nanotechnology , metallurgy , selectivity , chemistry , organic chemistry , engineering
Catalytic oxymethane reforming is an effective and efficient route to produce syngas, but the commonly used Ni catalysts suffer from coke deposition, Ni sintering, and heat‐transfer limitations. A Ni‐foam‐structured NiO‐MgO‐Al 2 O 3 nanocomposite catalyst was developed by thermal decomposition of NiMgAl layered double hydroxides (LDHs) in situ hydrothermally grown onto the Ni‐foam. Originating from the lattice orientation effect and topotactic decomposition of the LDH precursor, NiO, MgO, and Al 2 O 3 are highly distributed in the nanocomposite, and thus, this catalyst shows enhanced resistance to coke and sintering. At 700 °C and a gas hourly space velocity of 100 L g −1 h −1 , 86.5 % methane conversion and selectivities of 91.8/88.0 % to H 2 /CO are achieved with stability for at least 200 h. We believe this type of tailoring strategy and the as‐obtained materials can open up new opportunities for future applications in other high‐throughput and high‐temperature reactions.