Hydrogenation dearomatization catalyst containing molecular screen

Abstract

A hydrogenation dearomatization catalyst containing molecular sieve consists of alumina 20.0í½80.0wt% and lucinite molecular sieve 0.5í½50.0wt%. It takes at least one Fe, Co and Ni metal of ó° family and Mo and W metal of ó÷B family as active component. It can be used for hydrogenation refining of petroleum distillate and hydrogenation dearomatization hydrocarbon of diesel oil.

Description

Technical field [0001] The invention relates to a molecular sieve-containing hydrodearomatization catalyst, which is particularly suitable for hydrodearomatization. technical background [0002] The traditional hydrorefining catalyst is composed of alumina, group VIII and group VIB metal components. Although this kind of non-precious metal hydrogenation catalyst has good hydrodesulfurization and hydrodenitrogenation activities, it needs to be used at a higher reaction temperature in the hydrodearomatization reaction, and is limited by the thermodynamic balance. To the requirements of deep hydrodearomatization. Although noble metal catalysts have much higher hydrogenation activity than non-noble metal catalysts, and can carry out deep hydrogenation saturation of aromatics at moderate pressure and lower reaction temperature, noble metal catalysts are more sensitive to impurities such as sulfur and nitrogen, and are resistant to sulfur. , Poor nitrogen poisoning ability. In addition...

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Problems solved by technology

[0013] In summary, the phosphorus-modified catalysts show good hydrogenation activity, but the traditional phosphorus modification methods also bring about negative effects that cannot be ignored.

For example: general phosphorus-modified catalysts will cause a linear decrease in the specific surface area of ​​the catalyst and blockage of the pores as the phosphorus content continues to increase.

Moreover, if phosphoric acid modification is used, it will also cause a certain degree of erosion to the carrier.

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