The reforming of CH4 with CO2
The reforming of CH4 with CO2 to produce CO and H2 has been examined over a number of dispersed metal catalysts [67, 68]. At 723K, a CO2 partial pressure of 200 Torr, PCH4 = 200 Torr, and a total pressure of 1 atm (1 atm = 760 Torr), the catalysts listed below produced the rates listed for CO2 consumption. The catalysts used were sieved to a 120/70 mesh fraction, thus the largest particles had a diameter of 0.020 cm. Assume a catalyst density of 1g cm-3, which provides a conservative overestimate. The pore diameter, δ, 4. Acquisition and Evaluation of Reaction Rate Data was obtained from pore size distribution measurements. Determine the W-P number for:
a) Ni/SiO2.
b) Pt/ZrO2,
c) Rh/TiO2,
d) Ru/Al2O3.
Should one be concerned about pore diffusion limitations with any of these catalysts? Why?
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