Metal-doped cryptomelane manganese oxides in catalysis: Structure-activity correlation

PETR 106

Shanthakumar Sithambaram, SHANTHAKUMAR.SITHAMBARAM@uconn.edu1, Linping Xu, Linping.Xu@uconn.edu1, Yunshuang Ding, dingysh2000@yahoo.com2, Chun-Hu Chen1, and Steven L. Suib3. (1) Department of Chemistry, University of Connecticut, Chemistry Department, U3060, 55 North Eagleville Rd, Storrs, CT 06269-3060, (2) Institute of Materials Science, University of Connecticut, 55 North Eagleville Road, Storrs, CT 06269, (3) Department of Chemistry, Department of Chemical Engineering, Institute of Material Sciences, University of Connecticut, 55 North Eagleville Rd. U3060, Storrs, CT 06269-3060
Cryptomelane type octahedral molecular sieves (OMS) have been widely used in catalysis, batteries, chemical sensors, and other applications. OMS-2 materials consist of 2 X 2 one-dimensional tunnel structures with a MnO6 edge-shared. OMS-2 catalysts are synthesized using reflux, hydrothermal and solvent free methods. Various metals (Cr, Fe, Co, Ni, Cu and Zn) were incorporated in to OMS-2 materials and characterized. Their catalytic activities were studied for a variety of oxidation, epoxidation, and ring formation/ring opening reactions. The metal-doped OMS-2 materials were found to alter the conversions and selectivities of the products in the reactions as compared to that of non-doped OMS-2. A detailed study to relate activities of catalysts to their structural properties was done.

 

Poster Session
9:00 AM-11:00 AM, Wednesday, August 22, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Petroleum Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007