Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 57, Issue 10, Pages 3561-3566Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.7b04314
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Funding
- National Natural Science Foundation of China [21676138, 21722606, 21576137]
- Project of Priority Academic Program Development of Jiangsu Higher Education Institutions
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The catalytic activity of supported noble metal nanoparticles (NPs) is strongly dependent on their size. However, it is still a pronounced challenge to develop a facile method to reduce the size of noble metal NPs. Here we report a facile but efficient strategy by utilizing confined spaces between templates and silica walls in as-prepared SBA-15 (AS) to regulate the size of a well-known noble metal, rhodium (Rh). Rh NPs formed in confined spaces possess obviously smaller size than their counterparts generated in traditional calcined SBA-15 (CS) without confined spaces. Our results also demonstrate that the obtained materials are highly active in CO oxidation. For a typical material 5.0RhAS containing 5.02 wt % of Rh, the complete conversion of CO is achieved at 70 degrees C, which is evidently lower than that of its analogue 5.0RhCS (102 degrees C).
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