Tribo-Catalysis in the Synthesis Reaction of Carbon Dioxide

Figures & data

FIG. 1 Test apparatus.

FIG. 2 Experimental procedure.

FIG. 3 Coefficient of friction and partial pressure of reaction gases, temperature = 27°C.

FIG. 4 Coefficient of friction and partial pressure of reaction gases, temperature = 110°C.

FIG. 5 Activation energy for the oxidation of carbon monoxide with friction.

FIG. 6 Relationship between coefficient of friction and chemisorption or desorption rate of gases, O₂, CO; 1.0 × 10⁻⁴ Pa.

FIG. 7 Relationship between coefficient of friction and chemisorption or desorption rate of gases, O₂, CO; 5.0 × 10⁻⁴ Pa.

FIG. 8 Effect of CO and O₂ pressure on the ratio of O₂ chemisorption rate over coefficient of friction.

FIG. 9 Effect of CO and O₂ pressure on the ratio of CO chemisorption rate over coefficient of friction.

FIG. 10 Effect of CO and O₂ pressure on the ratio of CO₂ desorption rate over coefficient of friction.

FIG. 11 Pressure change of carbon monoxide, oxygen, and carbon dioxide at the start and the end of sliding.

FIG. 12 Effect of exposure duration before friction on CO₂ pressure (CO and O₂; 5.0 × 10⁻⁵ Pa), sliding velocity = 93 mm/s.

FIG. 13 Effect of exposure duration before friction on CO₂ pressure (CO and O₂; 1.0 × 10⁴ Pa), sliding velocity = 93 mm/s.

FIG. 14 Partial pressure change of three gases during friction.

FIG. 15 Schematics of production process of oxidation of carbon monoxide utilizing the electron emission and its attachment to become negative-ion radical.

FIG. 16 Schematic of reaction process (not in real scale).

FIG. 17 Reaction process of the carbon monoxide oxidation by the exoelectron emission and negative-ion-radical formation.