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笔者曾报导过TiO_2和CoO的协同效应使Mo-Co系HDS催化剂的内在活性增强,活性中心数目增加。为了进一步了解上述协同效应的作用本质,本文研究了反应物噻吩等在MoO_3/Al_2O_3、MoO_3-CoO/Al_2O_3和一系列MoO_3-CoO-TiO_2/Al_2O_3催化剂上的吸附行为。 1.实验 1.1 催化剂的制备及其活化条件 催化剂制备方法参阅文献[2]。将所得氧化态催化剂在氢气流下,按下述条件还原和预
The author has reported that the synergistic effect of TiO 2 and CoO enhances the intrinsic activity of the Mo-Co-based HDS catalyst and increases the number of active sites. In order to further understand the nature of the above synergies, the adsorption behavior of reactants such as thiophene on MoO 3 / Al 2 O 3, MoO 3 -CoO / Al 2 O 3 and a series of MoO 3 -CoO-TiO 2 / Al 2 O 3 catalysts was investigated. 1. Experiment 1.1 Preparation of catalyst and its activation conditions Preparation of catalyst See reference [2]. The resulting oxidized catalyst was reduced and pre-treated under a stream of hydrogen under the following conditions