metaloxide polymorph model 1/9/20078/16/2006 8/15/2006 1 Kinetic Model for TiO 2 Polymorphic Transformation from Anatase to Rutile Giridhar Madras * Department of Chemical Engineering, Indian Institute of Science, Bangalore 560012. India. Benjamin J. McCoy Department of Chemical Engineering and Materials Science, University of California at Davis, Davis, California 95616. Alexandra Navrotsky Thermochemistry Facility and NEAT ORU and Department of Chemical Engineering and Materials Science, University of California at Davis, Davis, California 95616. Original ms submitted to J. Am. Ceram. Soc. May 9, 2006. Revised ms submitted Aug. 19, 2006. * Corresponding author. Phone: 91-80-22932321, Fax: 91-80-23600683. Email: giridhar@chemeng.iisc.ernet.in