The rate of CO disproportionation over bimetallic Co-Mo catalysts with MgO as support was studied 650°-750°C and 1 atm. Effects of temperature, CO/CO2 composition, flow rates and catalyst deactivation were examined to determine kinetic constants. Hydrogen was removed and deposition of nanotubes was conducted using CO as carbon source at 650°-750°C. The system was allowed to cool under argon to room temperature. CO2 concentrations were monitored at the reactor exit using a calibrated CO2 gas analyzer. A kinetic mechanism and rate law was proposed over the temperature range studied. This is an abstract of a paper presented at the AIChE Annual Meeting and Fall Showcase (Cincinnati, OH 10/30/2005-11/4/2005).