石脑油催化剂中掺杂对Co配位的影响

The Effect of Doping in Naphtha Catalyst on Co Coordination

本文制备负载在用B、Na、K改性工业氧化铝的CoMo催化剂,采用表征方法对催化剂进行了描述,Co2p3/2峰值表明了Co氧化物的存在。CMA的Co2p XPS光谱值表明存在Co3O4、CoMoO4和CoAl2O4的混合物,当该类化合物在催化剂表面形成时,会导致孔堵塞,进而导致BET比表面积的减少。当硼化物浓度增加时,Co3O4的浓度降低,生成Co^2+化合物。这为石脑油加氢催化剂的改进提供实验依据。

In this paper,CoMo catalyst supported on B,Na,K modif ied industrial alumina was prepared.The characterization method was used to describe the catalyst.The peak value of Co2p3/2 indicated the presence of Co oxide.The Co2p XPS spectra of CMA showed that there was a mixture of Co3O4、CoMoO4 and CoAl2O4Co3O4.When these compounds formed on the catalyst surface,they would cause pore plugging,which would lead to the reduction of BET specif ic surface area.When the boride concentration increases,the concentration of Co3O4 decreases and Co^2+compounds are formed.This provides experimental basis for the improvement of naphtha hydrogenation catalyst.