Syngas production by CO2 reforming of methane using LnFeNi(Ru)O3 perovskites as precursors of robust catalysts

被引:28
|
作者
Pavlova, Svetlana [1 ]
Kapokova, Leyla [1 ]
Bunina, Rimma [1 ]
Alikina, Galina [1 ]
Sazonova, Nataliya [1 ]
Krieger, Tamara [1 ]
Ishchenko, Arkadii [1 ]
Rogov, Vladimir [1 ,2 ]
Gulyaev, Roman [1 ]
Sadykov, Vladislav [1 ,2 ]
Mirodatos, Claude [3 ]
机构
[1] Boreskov Inst Catalysis SB RAS, Novosibirsk, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
[3] Inst Rech Catalyse & Environm Lyon, Lyon, France
关键词
SYNTHESIS GAS; CARBON-DIOXIDE; LAFE1-XMGXO3; PEROVSKITES; SOLID-SOLUTIONS; DRY; LA; CH4; SM; PERFORMANCE; COMBUSTION;
D O I
10.1039/c2cy20054f
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
LnFeNi(Ru)O-3 perovskites synthesized via a modified Pechini method have been studied as catalyst precursors in CO2 reforming of methane. The structural and redox properties along with catalytic performance were found to depend upon Ln nature and Ru content in the perovskite. Active and stable catalysts have been formed from perovskite precursors in reaction media at high temperatures due to Fe-Ni-(Ru) alloy particles segregation from the perovskite lattice and their stabilization on the oxide surface. Coking stability of these catalysts in dry reforming of real natural gas containing admixtures of higher hydrocarbons is explained by combined effects of Ni dilution by Ru in alloy nanoparticles and high mobility and reactivity of surface/lattice oxygen in the disordered Ln ferrite support.
引用
收藏
页码:2099 / 2108
页数:10
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