Preparation method of hydrogenation catalyst containing molecular sieve

Abstract

The invention discloses a preparation method of a hydrogenation catalyst containing a molecular sieve. The preparation method comprises the following steps of preparing a catalyst carrier material and introducing a hydrogenation active component by a dipping method or a coprecipitation method to obtain the hydrogenation catalyst. The preparation process of the catalyst carrier material comprises the following steps of adding a mixture of a molecular sieve and an organic amine, and an organic alcohol and / or an organic acid into amorphous alumina in gelling, after amorphous alumina gelling, carrying out aging, then carrying out hydrothermal treatment, and then carrying out filtration, washing and drying to obtain the catalyst carrier material. The preparation method realizes ordered arrangement and uniform deposition of the alumina on the surface of the molecular sieve, improves the binding strength of the molecular sieve and the alumina, avoids agglomeration of the amorphous alumina and the molecular sieve and channel blocking caused by the agglomeration, realizes mutual communication of channels of the alumina and the molecular sieve, fully develops synergism of the alumina and the molecular sieve, and improves catalyst use performances. The hydrogenation catalyst obtained by the preparation method can be used for various hydrogenation processes.

Description

technical field [0001] The invention relates to a method for preparing a hydrogenation catalyst, in particular to a method for preparing a hydrogenation catalyst containing molecular sieves. Background technique [0002] The rapid development of the world economy and the gradual heavy and inferior quality of crude oil make the market demand for light oil products and chemical raw materials increase year by year. Catalysts are also increasingly used in hydrocarbon processing. Through the deep processing of crude oil, processing heavy oil and residual oil, and maximizing the production of light fractions are important means to make full use of existing crude oil resources. The development of efficient petrochemical catalysts is also the core content of comprehensive utilization of existing crude oil resources. [0003] Catalysts in hydrocarbon processing technology generally use molecular sieves as the main active component. In order to obtain different target products, it ...

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Problems solved by technology

In this method, amorphous silicon-alumina is prone to agglomeration, and it is also easy to enter the pores of the other party or block the orifice of the molecular sieve, which affects the distribution of amorphous silicon-alumina on the molecular sieve, and the connectivity between molecular sieve and amorphous silicon-alumina channels is poor. The specific surface area and pore volume of the catalyst are reduced, and the distribution of the active metal of the catalyst is uneven, which affects the performance of the catalyst

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