Ni、Zn改性Cu/水泥催化剂及其甲醇高温裂解性能

以碱式碳酸镍、碱式碳酸锌、碱式碳酸铜和水泥为原料制备水泥负载的Cu-Ni，Cu-Zn，Cu-Ni-Zn催化剂，考察了合成催化剂的甲醇裂解反应性能。结果表明：在常压、质量空速为3.39 h-1、温度为380~420 ℃的条件下，Cu-Ni/水泥催化剂作用下的甲醇转化率均在96%以上；Cu-Zn/水泥催化剂作用下的甲醇转化率较低，但对H2和CO选择性较高；Cu-Ni-Zn/水泥催化剂经1 600 h运转，甲醇转化率和产物分布变化不大，甲醇转化率基本维持在81%以上，(H2+CO)摩尔分数大于98%，说明Cu-Ni-Zn/水泥催化剂具有良好的高温稳定性。

PERFORMANCE OF METHANOL DECOMPOSITION AT HIGH TEMPERATURE ON COPPER CEMENT CATALYST MODIFIED BY NICKEL AND ZINC

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.