Abstract:

The methanol steam reforming was performed using a micro fixed-bed reactor at atmospheric pressure ,with CuZnZrAIO as the catalyst , and the effects of pseudo residence time W / F AO on the conversions of methanol to outlet CO and CO₂ were investigated at 503 - 543 K. By carrying out the direct methanol reforming and the methanol decomposition in parallel , a kinetic model suitable for the parallel reaction route was then established on the condition that the effects of intemal and extemal diffusing were eliminated , with the outlet CO and CO₂ as the two key indexes. Moreover , the corresponding model parameters were determined by means of the least square method. The F-test demonstrates that the proposed kinetic model is suitable for the simulation and design of the reactor for methanol steam reforming.

Key words: methanol, steam reforming, hydrogen, kinetics, CuZnZrAIO catalyst