Gasoline hydrodesulfurization catalyst, and preparation method and application thereof

Abstract

The invention relates to a gasoline hydrodesulfurization catalyst, and a preparation method and an application thereof. The method comprises the following steps: a, a graphite rod with a cavity is filled with a mixed material containing a first metal component, a second metal component and a catalytic oil slurry, and then the graphite rod is sealed to obtain an anode graphite rod; and b, the anodegraphite rod obtained in step a and a cathode graphite rod are put into an arc discharge device, the anode graphite rod and the cathode graphite rod are subjected to arc discharge under a mixed atmosphere containing hydrogen and helium, and after the anode graphite rod is consumed completely, the gasoline hydrodesulfurization catalyst with graphene as a carrier, obtained in the arc discharge device, is collected, wherein the first metal component is selected from group VIB metals, and the second metal component is a selected from group VIII metals. The catalyst has a high desulfurization activity, and can be used for deep desulfurization of industrial catalytically cracked gasoline under mild conditions.

Description

technical field [0001] The disclosure relates to a preparation method of a gasoline hydrodesulfurization catalyst, a gasoline hydrodesulfurization catalyst and applications thereof. Background technique [0002] There are many hazards in the sulfur compounds in gasoline: the sulfur oxides generated by combustion at high temperature will turn into acid, corrode and damage engine parts, cause irreversible poisoning of the three-way catalyst in the engine exhaust purification system, and cause NO X and CO X content increased significantly, and the SO emitted into the atmosphere X It also causes acid rain. Therefore, many countries in the world have made strict regulations on the sulfur content of motor gasoline through regulations. From January 1, 2017, China's motor vehicles have fully implemented the National V emission standard (the sulfur content index limit is 10 μg / g), and the more stringent National VI standard is also being formulated. It can be seen that it is immi...

AI Technical Summary

Problems solved by technology

However, under too high temperature and pressure, the existing Al 2 o 3 Supported hydrodesulfurization catalysts will be permanently deactivated

Because under high temperature and high pressure, Al 2 o 3 The Al atoms in the catalyst will undergo atom transfer reactions with the metal atoms (such as Ni, Mo, etc.) of the metal active center supported by them, thereby changing the molecular structure of the catalyst and causing the catalyst to lose its activity.

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