CO-OXIDATION REACTION ACTIVITY OF Pt CLUSTER CATALYSTS ON Ti0.9MO0.1O2 SUPPORT

Authors

  • Trung Thanh Nguyen An Giang University, 18 Ung Van Khiem, Long Xuyen city, An Giang province, Vietnam

DOI:

https://doi.org/10.15625/2525-2518/54/4B/12041

Keywords:

cluster of Pt atoms, CO oxidation reaction, Ti0.9Mo0.1O2 nanosupport.

Abstract

Platinum-based heterogeneous catalysts are critical to many important commercial chemical processes. However, their efficiency is extremely low on a per metal atom basis, because only the surface active-site atoms are used. Catalysts with clusters of atom dispersions are thus highly desirable to increase atom efficiency, but making them is challenging. Here we report the synthesis of a catalyst that consists of isolated clusters of Pt atoms anchored to the surfaces of Molybdenum-doped titanium oxide nanocrystallites. This cluster-atom catalyst has extremely high atom efficiency and shows excellent stability and activity for CO oxidation. The result showed that the highest activity and stability of catalyst with 0.2 wt.% loading of Pt are observed. These could be due to the partially vacant 5d orbitals of the positively charged, high-valent Pt atoms.

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Published

2018-03-22

Issue

Section

Articles