期刊
RSC ADVANCES
卷 10, 期 28, 页码 16700-16708出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0ra01665a
关键词
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资金
- Korea Institute of Industrial Technology (KITECH) [EE190053, JE200010]
- Ministry of Trade, Industry and Energy (MOTIE) [20005721]
- US Department of Interior-Bureau Reclamation [R17AC00132]
- University of Kansas [2234508-099-MESUPPRV]
- National Research Council of Science & Technology (NST), Republic of Korea [JE200010] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Oxygen functionalized carbon nanotubes synthesized by surface acid treatment were used to improve the dispersion properties of active materials for catalysis. Carbon nanotubes have gained attention as a support for active materials due to their high specific surface areas (400-700 m(2)g(-1)) and chemical stability. However, the lack of surface functionality causes poor dispersion of active materials on carbon nanotube supports. In this study, oxygen functional groups were prepared on the surface of carbon nanotubes as anchoring sites for decoration with catalytic nanoparticles. The oxygen functional groups were prepared through a chemical acid treatment using sulfuric acid and nitric acid, and the amount of functional groups was controlled by the reaction time. Vanadium, tungsten, and titanium oxides as catalytic materials were dispersed using an impregnation method on the synthesized carbon nanotube surfaces. Due to the high density of oxygen functional groups, the catalytic nanoparticles were well dispersed and reduced in size on the surface of the carbon nanotube supports. The selective catalytic reduction catalyst with the oxygen functionalized carbon nanotube support exhibited enhanced NO(x)removal efficiency of over 90% at 350-380 degrees C which is the general operating temperature range of catalysis in power plants.
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