Catalysts synthesized by selective deposition of Fe onto Pt for the water-gas shift reaction

被引：31
|
作者：
Aragao, Isaias Barbosa [1 ,2 ]
Ro, Insoo [2 ]
Liu, Yifei [2 ]
Ball, Madelyn [2 ]
Huber, George W. [2 ]
Zanchet, Daniela [1 ]
Dumesic, James A. [2 ]
机构：
[1] Univ Cwnpinas UNICAMP, Inst Chem, POB 6154, BR-13083970 Campinas, SP, Brazil
[2] Univ Wisconsin, Dept Chem & Biol Engn, 1415 Engn Dr, Madison, WI 53706 USA
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 222卷
基金：
巴西圣保罗研究基金会;
关键词：
Bimetallic catalyst; FePt; Controlled surface reactions (CSR); Water-gas shift reaction (WGSR); RAY-ABSORPTION SPECTROSCOPY; TEMPERATURE CO OXIDATION; BIMETALLIC CATALYSTS; PREFERENTIAL OXIDATION; ACTIVE-SITES; CLUSTERS; NANOPARTICLES; DISSOCIATION; BIOMASS; PHASE;
D O I：
10.1016/j.apcatb.2017.10.004
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：
FePt bimetallic catalysts with intimate contact between the two metals were synthesized by controlled surface reactions (CSR) of (cyclohexadiene)iron tricarbonyl with hydrogen-treated supported Pt nanoparticles. Adsorption of the iron precursor on a Pt/SiO2 catalyst was studied, showing that the Fe loading could be increased by performing multiple CSR cycles, and the efficiency of this process was linked to the renewal of adsorption sites by a reducing pretreatment. The catalytic activity of these bimetallic catalysts for the water gas shift reaction was improved due to promotion by iron, likely linked to H2O activation on FeOx species at or near the Pt surface, mostly in the (II) oxidation state.
引用
收藏
页码：182 / 190
页数：9
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