Methanol synthesis catalysts of Cu/ZnO/Al₂O₃ were prepared using co-precipitation method in presence of Cr and Mg promoters. Precursors were characterized by Air-TGA and XRD. After calcination at 350 °C, catalysts were analyzed by BET and XRD. H₂-TGA and H₂-TPR were used to determine reduction properties of the catalysts. Co-addition of Cr and Mg resulted in the formation of larger surface area and smaller CuO particles by enhancing dispersion of CuO in the catalyst composition. Catalytic activity, selectivity and deactivation rates of synthesized catalysts were tested at 270 °C and 3 MPa for 144 h. Mg or Cr addition to the catalyst formulation reduced the methanol productivity whereas the co-addition of Cr and Mg increased the methanol productivity. At 144 h reaction time, catalysts with Mg:Cr molar ratios of 2:1 and 1:1 had the highest methanol selectivities and methanol weight time yields of 97.7 and 98.3%, and 0.53 and 0.52 g_{total methanol production} g_catalyst⁻¹ h⁻¹, respectively. The catalysts without Cr promoter deactivated rapidly. The presence of Cr in the catalyst composition reduced deactivation rates and sintering of the catalysts. Deactivation rates of Mg and Cr co-promoted catalysts followed a cyclic trend and possible regenerative characteristics.

Cu/ZnO/Al ₂ O ₃甲醇合成催化剂采用共沉淀法在Cr和Mg促进剂存在下制备。前驱体通过 Air-TGA 和 XRD 进行表征。在 350 °C 下煅烧后，通过 BET 和 XRD 分析催化剂。H ₂ -TGA 和 H ₂-TPR 用于确定催化剂的还原性能。Cr 和 Mg 的共同添加通过增强 CuO 在催化剂组合物中的分散导致形成更大的表面积和更小的 CuO 颗粒。合成催化剂的催化活性、选择性和失活率在 270 °C 和 3 MPa 下测试 144 小时。向催化剂配方中添加 Mg 或 Cr 会降低甲醇生产率，而共同添加 Cr 和 Mg 会增加甲醇生产率。在 144 小时的反应时间内，Mg:Cr 摩尔比为 2:1 和 1:1 的催化剂具有最高的甲醇选择性和甲醇重量时间产率，分别为 97.7% 和 98.3%，以及 0.53 和 0.52 g 的_{总甲醇产量} g_催化剂^-1  h ⁻¹， 分别。不含 Cr 助催化剂的催化剂失活迅速。催化剂组合物中Cr的存在降低了催化剂的失活速率和烧结。Mg 和 Cr 共促进催化剂的失活率遵循循环趋势和可能的再生特性。