摘要
通过水热合成法,改变不同硅铝比得到结晶度较好的SAPO-34分子筛。通过离子交换法和高压加氢的方法制得Cu-SAPO-34催化剂,并对催化剂进行了XRD和TPR等表征,由表征结果可知负载的铜全部被转化为Cu~0。将得到的Cu-SAPO-34催化剂应用于无配体情况下的沃尔曼偶联反应中,其结果显示出Cu-SAPO-34在C-O键和C-N键的形成上展现了较高的催化活性。
SAPO-34 zeolite was synthesized by hydrothermal method. Then the Cu-SAPO-34 catalyst was synthesized by ion exchange and high-pressure hydrogenation method. The Cu-SAPO-34 catalyst are also characterized by scanning electron microscope(SEM) and TPR. The characterization results showed that all the Cu~(2+) converted to Cu~0.Finally the catalyst was used for Ullmann-type couplings under ligand-free conditions. The catalyst exhibited high catalytic activity in C–O and C–N bond formation couplings.
引文
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