Support Effect on the Low-Temperature Hydrogenation of Benzene over PtCo Bimetallic and the Corresponding Monometallic Catalysts

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Applied Catalysis. B, Environmental

DOI:https://doi.org/10.1016/j.apcatb.2009.06.036· OSTI ID:980585

Lu, S; Lonergan, W; Zhu, Y; Xie, Y; Chen, J

PtCo bimetallic and Co, Pt monometallic catalysts supported on ?-Al2O3, SiO2, TiO2 and activated carbon (AC) were prepared and evaluated for the hydrogenation of benzene at relatively low temperatures (343 K) and atmospheric pressure. Results from flow reactor studies showed that supports strongly affected the catalytic properties of different bimetallic catalysts. AC supported PtCo bimetallic catalysts exhibited significantly better performance than the other bimetallic catalysts, and all the bimetallic catalysts possessed higher activity than the corresponding monometallic catalysts. Results from CO chemisorption and H2-temperature-programmed reduction (H2-TPR) studies suggested that different catalysts possessed different properties in chemisorption capacity and reduction behavior, and AC supported PtCo catalysts possessed significantly higher CO chemisorption capacity compared to the other catalysts. Extended X-ray absorption fine structure (EXAFS) and transmission electron microscopy (TEM) analysis provided additional information regarding the formation of Pt-Co bimetallic bonds and metallic particle size distribution in the PtCo bimetallic catalysts on different supports.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 980585
• Report Number(s): BNL-93503-2010-JA; TRN: US201015%%1970
• Journal Information: Applied Catalysis. B, Environmental, Vol. 91; ISSN 0926-3373
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION
ACTIVATED CARBON
ATMOSPHERIC PRESSURE
BEHAVIOR
BENZENE
CAPACITY
CATALYSTS
CHEMISORPTION
DISTRIBUTION
FINE STRUCTURE
HYDROGENATION
INFORMATION
PARTICLE SIZE
PERFORMANCE
REACTORS
REDUCTION
SUPPORTS
TEMPERATURE RANGE 0065-0273 K
TRANSMISSION ELECTRON MICROSCOPY
national synchrotron light source