title: Hydrothermal Synthesis of Lanthanide Stannates Pyrochlore Nanocrystals for Catalytic Combustion of Soot Particulates.
abstract: Nanocrystalline La2Sn2O7 and La2Sn1.8Co0.2O7 with a phase-pure pyrochlore structure were synthesized by a hydrothermal method, and their catalytic activity was investigated for soot combustion. The as-synthesized catalysts presented relatively larger surface area, and pore volume, which was benefit to the gas molecule diffusion in the reaction. A uniform spherical structure with particle size of 200-500 nm was found in SEM. The samples via hydrothermal route are more active for catalytic soot combustion, ascribing to the spherical morphology, high surface area and improved oxygen mobility. After Co, the reducibility was improved and surface oxygen vacancy was produced, resulting in the enhanced activity and selectivity to CO2 formation.
authors.affiliation: School of Resources and Environment, University of Jinan, 336 Nanxinzhuangxi Road, Jinan 250022, China.
authors.forename: Xiaomin
authors.identifier: 0000-0003-0535-7060
authors.initials: X
authors.lastname: Zhang
authors.affiliation: School of Resources and Environment, University of Jinan, 336 Nanxinzhuangxi Road, Jinan 250022, China.
authors.forename: Xuhui
authors.identifier: 0000-0002-4247-148X
authors.initials: X
authors.lastname: Liu
authors.affiliation: School of Resources and Environment, University of Jinan, 336 Nanxinzhuangxi Road, Jinan 250022, China.
authors.forename: Peng
authors.identifier: 0000-0002-0084-2641
authors.initials: P
authors.lastname: Lu
authors.affiliation: School of Resources and Environment, University of Jinan, 336 Nanxinzhuangxi Road, Jinan 250022, China.
authors.forename: Liguo
authors.identifier: 0000-0002-5502-489X
authors.initials: L
authors.lastname: Wang
authors.affiliation: School of Resources and Environment, University of Jinan, 336 Nanxinzhuangxi Road, Jinan 250022, China.
authors.forename: Zhaoliang
authors.identifier: 0000-0002-8048-0600
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: School of Resources and Environment, University of Jinan, 336 Nanxinzhuangxi Road, Jinan 250022, China.
authors.forename: Xiuju
authors.identifier: 0000-0003-4219-4619
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Resources and Environment, University of Jinan, 336 Nanxinzhuangxi Road, Jinan 250022, China.
authors.forename: Zhongpeng
authors.identifier: 0000-0001-6444-221X
authors.initials: Z
authors.lastname: Wang