Stable Pd-Doped Ceria Structures for CH4 Activation and CO Oxidation
نویسندگان
چکیده
منابع مشابه
Stable Pd-Doped Ceria Structures for CH4 Activation and CO Oxidation
Doping CeO2 with Pd atoms has been associated with catalytic CO oxidation, but current surface models do not allow CO adsorption. Here, we report a new structure of Pd-doped CeO2(111), in which Pd adopts a square planar configuration instead of the previously assumed octahedral configuration. Oxygen removal from this doped structure is favorable. The resulting defective Pd-doped CeO2 surface is...
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Catalytic oxidation of carbon monoxide (CO) is of great importance in many different fields of industry. Until now it still remains challenging to use non-noble metal based catalysts to oxidize CO at low temperature. Herein, we report a new class of nanoporous, uniform, and transition metal-doped cerium (IV) oxide (ceria, CeO2) microsphere for CO oxidation catalysis. The porous and uniform micr...
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Systematic density-functional calculations have been performed to address an important issue for CO oxidation on redox ceria: the role of lattice oxygen. One major findings is that CO easily grasps one lattice oxygen atom to form CO2 and CO2 on CeO2 (111) and Ce0.75Zr0.25O2 (111) with small activation energies. Zr dopants facilitate the reduction of Ce to Ce and hence weaken the Ce–O bonds, whi...
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ژورنال
عنوان ژورنال: ACS Catalysis
سال: 2017
ISSN: 2155-5435,2155-5435
DOI: 10.1021/acscatal.7b03295