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Effects of reduction temperature and content of Pd loading on the performance Pd/CeO2 catalyst for CO oxidation
- Source :
- Chinese Chemical Letters. 30:1153-1156
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- The content of noble metal loading and the reduction process of the catalysts are important factors influence the economic indicator and catalytic performance for industrial catalysis. In the present work, Pd/CeO2NT (Pd supported on the CeO2 nanotubes) catalysts are prepared with the hydrothermal synthesized CeO2NT and glutathione (GSH) reduced Pd nanoparticles via impregnation. The content of Pd loading as well as the catalysts reduction temperature are optimized to the CO oxidation reduction. Our results show that the best Pd loading is 1.5%Pd/CeO2NT. The catalysts reduced at 350 °C for 2 h prior to catalytic reaction perform the best toward CO oxidation, which reaches completely CO conversion at 70 °C. The XRD, Raman, H2-TPR, TEM, BET and XPS characterization reveal that the excellent catalytic performance of 350 °C 1.5%Pd/CeO2NT sample can be attributed the high Pd0 species and oxygen vacancy in the sample, which are important factors influence the activity of the catalysts.
- Subjects :
- Materials science
Oxidation reduction
02 engineering and technology
General Chemistry
engineering.material
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Hydrothermal circulation
Oxygen vacancy
0104 chemical sciences
Catalysis
symbols.namesake
Chemical engineering
X-ray photoelectron spectroscopy
Pd nanoparticles
engineering
symbols
Noble metal
0210 nano-technology
Raman spectroscopy
Subjects
Details
- ISSN :
- 10018417
- Volume :
- 30
- Database :
- OpenAIRE
- Journal :
- Chinese Chemical Letters
- Accession number :
- edsair.doi...........4310d7d8e15a8173731243082e08301c
- Full Text :
- https://doi.org/10.1016/j.cclet.2019.03.030