Abstract

The distribution of vanadium and nickel upon hydroconversion of vacuum tower bottoms in the presence of slurried MoS₂, Ni₇S₆, (NH₄)_0.25 ⋅ WO₃, and Fe_1 − xS nanoparticles has been studied. The experiments have been performed in an autoclave reactor and in a flow-through hydroconversion unit. It has been shown that the coke yield in hydrocracking reactions increases in the order MoS₂, Ni₇S₆, (NH₄)_0.25 ⋅ WO₃, Fe_1 − xS. The proportion of metals in the toluene-insoluble hydroconversion residue increases in the same order. As the hydroconversion temperature increases, the transfer of vanadium and nickel to condensation products increases. According to electron microscopy data for the toluene insolubles, it can be assumed that vanadium and nickel are bonded to carbon, enter into the coke composition, and do not form compounds with the active phase of the MoS₂ catalyst.

中文翻译：

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钒和镍在纳米浆料催化剂上真空塔底加氢转化中的行为

摘要

钒和镍的在减压塔底部的加氢转化中浆化的MoS的存在分布₂，镍₇小号₆，（NH ₄）_0.25 ⋅WO ₃和Fe _{1 -  X} š纳米颗粒进行了研究。实验是在高压釜反应器和流通式加氢转化装置中进行的。已经显示的是，在顺序的MoS加氢裂化反应的增加而焦炭产率₂，镍₇小号₆，（NH ₄）_0.25 ⋅WO ₃，铁_{1 -  X}S.不溶于甲苯的加氢转化残基中的金属比例以相同顺序增加。随着加氢转化温度的升高，钒和镍向缩合产物的转移增加。根据甲苯不溶物的电子显微镜数据，可以假定钒和镍键合到碳上，进入焦炭组合物中，并且不与MoS ₂催化剂的活性相形成化合物。