NiMoW/P-Al₂O₃ catalysts were synthesized with a different ratio of Mo:W (W-free sample, Mo:W = 2:1, Mo:W = 1:1, Mo:W = 1:2 and Mo-free sample) and various P₂O₅ contents in the carrier (up to 5 wt%). The surface of the sulfide phase of the samples was investigated by means of high-resolution transmission electron microscopy (HR TEM) and X-ray photoelectron spectroscopy (XPS). The catalytic activity of patterns was estimated in the reactions of hydrodesulfurization of dibenzothiophene (DBT) and hydrogenation of naphthalene. The results are presented in the form of three-dimensional diagrams “P₂O₅ content—ratio Mo/W—catalytic activity” or “P₂O₅ content—ratio Mo/W—property”. The influence of the phosphorus content on the maximum peak position of the binding energy S2p/1 of the S²⁻ atomic group for the investigated systems is shown. Comparison of the shape of the curve of changes in the binding energy with the previously presented results on the catalytic activity of the samples in the HDS of a vacuum gas oil allows us to conclude that phosphorus is able to change the electronic state of the active phase of the catalysts, which leads to a change in their catalytic activity in the reactions of HDS.

中文翻译：

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Mo：W摩尔比和P 2 O 5含量不同的NiMoW / P-Al 2 O 3四组分催化剂：组成和活性相形态对催化活性的影响

以不同的Mo：W比例合成了NiMoW / P-Al ₂ O ₃催化剂（无W样品，Mo：W = 2：1，Mo：W = 1：1，Mo：W = 1：2和Mo样品）和载体中各种P ₂ O ₅含量（最高5 wt％）。样品的硫化物相表面通过高分辨率透射电子显微镜（HR TEM）和X射线光电子能谱（XPS）进行了研究。在二苯并噻吩（DBT）的加氢脱硫和萘的氢化反应中估计了图案的催化活性。结果以三维图“ P ₂ O ₅含量-Mo / W比-催化活性”或“ P ₂ O _{5”的形式表示。}含量-Mo / W比-属性”。对于所研究的系统，示出了磷含量对S ^2-原子基团的结合能S 2p / 1的最大峰位置的影响。将结合能变化曲线的形状与先前介绍的真空瓦斯油的HDS中样品催化活性的结果进行比较，可以得出以下结论：磷能够改变活性相的电子状态催化剂的变化，导致HDS反应中催化活性的变化。