Iron-based catalyst for producing low-carbon olefins from synthesis gas and its application

Abstract

The invention relates to a method for preparing low-carbon olefins from synthesis gas on an iron-based catalyst and mainly solves the problems that in the prior art, in a reaction of preparation of the low-carbon olefins from the synthesis gas by using a fixed bed, the CO conversion rate is low, and low-carbon olefin selectivity is low. The iron-based catalyst comprises, by weight, 20-70 parts of the iron element or an oxide of the iron element, 4-20 parts of at least one element selected from copper and manganese or an oxide of the at least one element, 4-20 parts of at least one element selected from zinc and zirconium or an oxide of the at least one element, 20-40 parts of the silicon element or an oxide of the silicon element, 1-10 parts of the germanium element or an oxide of the germanium element and 1-10 parts of the iridium element or an oxide of the iridium element. The problems are well solved through adoption of the above technical scheme, and the iron-based catalyst can be used for industrial production of preparing the low-carbon olefins from the synthesis gas by using the fixed bed.

Description

technical field [0001] The invention relates to an iron-based catalyst for preparing low-carbon olefins from synthesis gas and its application. Background technique [0002] Low-carbon olefins refer to olefins with carbon atoms less than or equal to 4. Low-carbon olefins represented by ethylene and propylene are very important basic organic chemical raw materials. With the rapid growth of my country's economy, the supply of low-carbon olefins has been in short supply for a long time. At present, the production of low-carbon olefins mainly adopts the petrochemical route of cracking light hydrocarbons (ethane, naphtha, light diesel oil). Due to the increasing shortage of global oil resources and the long-term high price of crude oil, the development of low-carbon olefins industry only relies on oil The tubular cracking furnace process with light hydrocarbons as raw materials will encounter more and more raw material problems, and the production process and raw materials of lo...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of low conversion rate of CO and low selectivity of low-carbon olefins in the product in the technology of producing low-carbon olefins from synthesis gas in the prior art. The method of low-carbon olefins, which uses a new type of iron-based catalyst, has the advantages of high conversion rate of CO and high selectivity of low-carbon olefins in the product

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