Abstract: Using the basic nickel carbonate, basic zinc carbonate, basic copper carbonate and cement as materials, the Cu-Ni, Cu-Zn and Cu-Ni-Zn cement catalysts were prepared, and their catalytic performance for methanol decomposition was studied. The evaluation results showed that the conversion of methanol over Cu-Ni catalyst exceeds 96% at 380-420℃, WHSV of 3.39h-1 and atmospheric pressure. The Cu-Zn catalyst shows lower catalytic activity, but higher selectivity for H2 and CO. After the Cu-Ni-Zn cement catalyst runs for 1600 h, little changes are observed in the conversion of methanol and the distribution of product, the conversion of methanol is basically above 81%, and the total molar fraction of H2+CO is more than 98%, indicating its good high temperature stability.

Key words: methanol, cracking reaction, cement catalyst, hydrogen-rich gas