Catalyst for improving methanol aromatization reaction performance, and preparation method and application thereof

Abstract

The invention discloses a catalyst for improving methanol aromatization reaction performance, and a preparation method and application thereof. The preparation method comprises the steps: firstly, drying a carrier HZSM-5; then loading active components Ga and Fe on the dried carrier HZSM-5 by adopting an initial wet impregnation method; and roasting the obtained mixture in a nitrogen or air atmosphere to obtain the catalyst for improving the methanol aromatization reaction performance. According to the catalyst prepared by the method, CO2 which is a main gas with a greenhouse effect is effectively utilized to be converted into aromatic hydrocarbon with a high additional value in the use process, the preparation method is simple, raw materials are easy to obtain, the catalyst is green and efficient, the economic benefit is high, and the requirement of industrial production is easily met.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical catalysts, and in particular relates to a catalyst for improving the performance of methanol aromatization reaction, a preparation method and an application. Background technique [0002] Aromatic hydrocarbons are an important organic reaction intermediate in the petroleum industry, and are widely used in many industries such as medicine, military industry, materials, and daily cosmetics. At present, the main source of aromatics still relies on traditional processes such as catalytic reforming in petrochemical industry. However, due to the shortage of petroleum resources, it is of great practical significance to develop a new type of aromatic hydrocarbon preparation technology. [0003] At present, in the field of coal chemical industry, coal is used as raw material to gasify CO and H 2 Synthetic methanol technology has become more and more mature, and the production of methanol is s...

AI Technical Summary

Problems solved by technology

However, the generation of a large amount of alkanes and the dynamic process of dehydrogenation-hydrogenation in the reaction process make the problems of low selectivity and poor stability of aromatics in MTA technology restrict the industrialization of this technology.

[0004] Many researchers have studied the reaction of methanol to aromatics from two aspects of catalyst design and reaction process optimization, and have made some progress. The existing technology often supports multi-component active metals on molecular sieves, such as (Pt, Ag, etc.), but Due to the addition of these metals, the cost is also greatly increased; the process of acid-base treatment and silane modification of HZSM-5 is often too cumbersome, and multi-step modification of molecular sieves is required, which does not take advantage of the development of industrialization; for example, hollow HZSM-5, Core-shell HZSM-5 often requires the addition of expensive templates to create pores and encapsulate, which not only requires harsh synthesis conditions, but also reduces the wear resistance of the catalyst

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