How Temperature Affects the Mechanism of CO Oxidation on Au/TiO2: A Combined EPR and TAP Reactor Study of the Reactive Removal of TiO2 Surface Lattice Oxygen in Au/TiO2 by CO

ACS Catalysis ◽  
2016 ◽  
Vol 6 (8) ◽  
pp. 5005-5011 ◽  
Author(s):  
Daniel Widmann ◽  
Anke Krautsieder ◽  
Patrick Walter ◽  
Angelika Brückner ◽  
R. Jürgen Behm
Keyword(s):  
Co Oxidation ◽  
Lattice Oxygen ◽  
Tio2 Surface ◽  
Surface Lattice

scholarly journals Tuning Pt-CeO2 interactions by high-temperature vapor-phase synthesis for improved reducibility of lattice oxygen

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Xavier Isidro Pereira-Hernández ◽  
Andrew DeLaRiva ◽  
Valery Muravev ◽  
Deepak Kunwar ◽  
Haifeng Xiong ◽  
...  
Keyword(s):  
High Temperature ◽  
Co Oxidation ◽  
Vapor Phase ◽  
Ambient Pressure ◽  
Lattice Oxygen ◽  
Single Atom ◽  
Stable Form ◽  
Phase Synthesis ◽  
Vapor Phase Synthesis ◽  
High Temperature Vapor

Abstract In this work, we compare the CO oxidation performance of Pt single atom catalysts (SACs) prepared via two methods: (1) conventional wet chemical synthesis (strong electrostatic adsorption–SEA) with calcination at 350 °C in air; and (2) high temperature vapor phase synthesis (atom trapping–AT) with calcination in air at 800 °C leading to ionic Pt being trapped on the CeO2 in a thermally stable form. As-synthesized, both SACs are inactive for low temperature (<150 °C) CO oxidation. After treatment in CO at 275 °C, both catalysts show enhanced reactivity. Despite similar Pt metal particle size, the AT catalyst is significantly more active, with onset of CO oxidation near room temperature. A combination of near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) and CO temperature-programmed reduction (CO-TPR) shows that the high reactivity at low temperatures can be related to the improved reducibility of lattice oxygen on the CeO2 support.

scholarly journals Atomic‐Scale Insights into Surface Lattice Oxygen Activation at the Spinel/Perovskite interface of Co 3 O 4 /La 0.3 Sr 0.7 CoO 3

2019 ◽  
Vol 131 (34) ◽  
pp. 11846-11851 ◽  
Author(s):  
Xiyang Wang ◽  
Ziye Pan ◽  
Xuefeng Chu ◽  
Keke Huang ◽  
Yingge Cong ◽  
...  
Keyword(s):  
Oxygen Activation ◽  
Lattice Oxygen ◽  
Atomic Scale ◽  
Surface Lattice

scholarly journals Activation of Surface Lattice Oxygen in Ceria Supported Pt/Al 2 O 3 Catalyst for Low‐Temperature Propane Oxidation

ChemCatChem ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 2021-2021
Author(s):  
Chengxiong Wang ◽  
Feng Feng ◽  
Junchen Du ◽  
Tingting Zheng ◽  
Zaifu Pan ◽  
...  
Keyword(s):  
Low Temperature ◽  
Propane Oxidation ◽  
Lattice Oxygen ◽  
Surface Lattice

Biomass Oxidation: Formyl CH Bond Activation by the Surface Lattice Oxygen of Regenerative CuO Nanoleaves

2015 ◽  
Vol 54 (31) ◽  
pp. 8928-8933 ◽  
Author(s):  
Prince N. Amaniampong ◽  
Quang Thang Trinh ◽  
Bo Wang ◽  
Armando Borgna ◽  
Yanhui Yang ◽  
...  
Keyword(s):  
Bond Activation ◽  
Lattice Oxygen ◽  
Surface Lattice

Direct CO oxidation by lattice oxygen on the SnO2(110) surface: a DFT study

2014 ◽  
Vol 16 (24) ◽  
pp. 12488-12494 ◽  
Author(s):  
Zhansheng Lu ◽  
Dongwei Ma ◽  
Lin Yang ◽  
Xiaobing Wang ◽  
Guoliang Xu ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Lattice Oxygen ◽  
Dft Study ◽  
Reduced Surface

The process of CO oxidation by lattice oxygen on the SnO2(110) surface and the recovery of the reduced surface by O2 is presented.

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