Preparation method and application of MgO (111) load nickel-base catalyst

Abstract

The invention belongs to a catalyst preparation technology field of reforming methane with carbon dioxide to produce synthesis gas, and particularly discloses a preparation method and application of MgO (111) load nickel-base catalyst. The catalyst is synthesized by a step of carrier synthesis and a step of Ni / MgO (111) preparation. The carrier is prepared by dissolving magnesium ribbon into a absolute methanol, adding anisyl alcohol and stirring, adding a water methanol solution dropwise under stirring, putting the hydrolyzed mixture into a high pressure reactor, leading argon into the reactor to replace the atmosphere, and then pressurizing to 1.0 MPa, reacting at the temperature of 265 DEG C, cooling and putting the obtained product into a tubular furnace, and calcinating the product; and the Ni / MgO (111) is prepared by immersing the carrier in an acetylacetone nickel solution uniformly, and calcinating for 5 h at the temperature of 650 DEG C after drying. The results of using the catalyst for catalyzing the reforming reaction of methane and carbon dioxide show that the catalyst has good activity and stability and enables the conversion rate of both CH4 and CO2 to be over 85%, and that the catalyst activity can stably maintain for 200 h without obvious inactivation.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation for synthesis gas reforming of methane and carbon dioxide, in particular to a preparation method and application of a MgO(111)-loaded nickel-based catalyst, which is suitable for catalyzing the reaction of methane carbon dioxide reforming for synthesis gas. Background technique [0002] With the rapid development of modern chemical industry and human social activities, energy utilization and structural adjustment have become the focus of attention of all countries in the world. The methane carbon dioxide reforming reaction can directly convert naturally abundant CH 4 and CO 2 resources into extremely useful syngas (CO+H 2 ), and at the same time alleviate to a certain extent due to CO 2 and CH 4 The problem of greenhouse effect caused by other gases is of great significance. Traditional CH 4 n(H 2 ) / n(CO)≥3, suitable for ammonia synthesis, but not suitable for oxo synthesis and...

AI Technical Summary

Problems solved by technology

Among them, nickel-based catalysts have always been a research hotspot because of their faster conversion rate and lower cost, but at the same time, nickel-based catalysts are prone to carbon deposition and their stability is not high enough.

Carbon deposits will not only cover the surface of the catalyst and lead to catalyst deactivation, but also cause reactor blockage and increase the pressure of the catalyst bed

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