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研究了以硅酸铝为载体的 MoS_2催化剂的表面物化性质,以及载体中 SiO_2/Al_2O_3含量比不同时这些物化性质的变化.实验结果表明,组成不同的各硅铝载体载硫化钼后,其表面孔隙结构均有不同程度的变化。这种变化部分是由于承载过程的条件引起的,而主要是由于硫化钼和载体的组成分相互作用而引起.这种相互作用也使载体的表面酸度改变,但这种改变和其裂化活性的变化不是一致的.这种相互作用使载体生成新的粗孔,同时,改变了载体的相组成——形成类似α—SiO_2的新相.根据组成不同的各种硅铝载体在载 MoS_2后所发生的各种表面物化性质的变化,认为硫化钼和硅铝载体各组成分(氧化铝、氧化硅、活性硅铝络合物)形成了新的化合物.
The physical and chemical properties of MoS_2 catalyst supported on aluminum silicate and the change of physicochemical properties of the catalyst were investigated when the content of SiO_2 / Al_2O_3 in the carrier was different.The experimental results show that the surface of Pore structure has varying degrees of change. This change is due in part to the conditions of the loading process and is mainly due to the interaction of the compositional components of the molybdenum sulfide with the carrier.The interaction also changes the surface acidity of the carrier but the change and its cracking activity The change is not consistent .This interaction makes the carrier generate new coarse pores, at the same time, changing the phase composition of the carrier - forming a new phase similar to α-SiO_2.According to the different composition of the various Si-Al carrier after loading MoS_2 Occurred in a variety of changes in the physical and chemical properties of the surface, that the various components of molybdenum sulfide and silicon-alumina carrier (alumina, silica, active silicon aluminum complexes) formed a new compound.