New method for the preparation of impregnated metal catalysts using preassembled palladium nanoparticles

CHED 284

Eric P. Fillerup, efillerup@yahoo.com1, Brian Dunn, B.Dunn@m.cc.utah.edu1, Edward M. Eyring, eyring@chem.utah.edu1, P Dutta2, Mohindar S. Seehra, mseehra@wvu.edu3, Gregory C. Turpin1, Richard D. Ernst1, Naresh Shah, naresh@uky.edu4, and Gerald P. Huffman, huffman@engr.uky.edu5. (1) Department of Chemistry, University of Utah, 315 S 1400 E, Salt Lake City, UT 84112, (2) West Virginia University, (3) Department of Physics, West Virginia University, PO BOX 6315, Morgantown, WV 26506-6315, (4) CFFS/CME, University of Kentucky, 533 South Limeston Street, Suite 107, Lexington, KY 40508-4005, (5) Consortium for Fossil Fuel Science and Department of Chemical & Materials Engineering, University of Kentucky, 533 South Limestone Street, Suite 107, Lexington, KY 40506-0043
Current common methods of catalyst preparation provide little means for control of metal catalyst particle size. To control particle size, palladium nanoparticles were synthesized using a reverse microemulsion as a structure-directing agent. Palladium nanoparticles were prepared from an isooctane/ AOT reverse microemulsion with a water to surfactant ratio of approximately 20. Preassembled palladium nanoparticles were then loaded onto ceria for use as a Water-Gas Shift (WGS) catalyst. Palladium loading was accomplished through impregnation, coprecipitation and sol-gel methods with palladium loading of 1%. Reactivity was measured using a six channel, packed bed reactor at 150 ºC, 200 ºC, 250 ºC, 300 ºC and 350 ºC. Catalysts were characterized by means of BET, TPR, H2 pulse chemisorption, XRD and TEM.
 

Undergraduate Research Poster Session: Nanotechnology
2:30 PM-4:30 PM, Monday, 11 September 2006 Moscone Center -- Hall D, Poster

Division of Chemical Education

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006