Iron-Based Catalysts for Direct Synthesis of Light Olefins from Syngas

Abstract

The invention relates to an iron-based catalyst for direct synthesis of low-carbon olefin from synthesis gas and mainly solves the problems of low CO conversion rate and low-carbon olefin selectivityin reactions for direct synthesis of low-carbon olefin from synthesis gas in the prior art. The iron-based catalyst for direct synthesis of low-carbon olefin from synthesis gas is prepared from components in parts by weight as follows: a) 18-50 parts of an iron element or oxide thereof; b) 10-25 parts of at least one element of manganese and zinc or oxide thereof; c) 10-25 parts of at least one element of magnesium and strontium or oxide thereof; d) 20-60 parts of an aluminum element or oxide thereof; e) 1-5 parts of a niobium element or oxide thereof; and f) 1-5 parts of a tantalum element oroxide thereof. With the adoption of the technical scheme, the problems are better solved and the catalyst can be applied to industrial production of direct synthesis of low-carbon olefin from the synthesis gas.

Description

technical field [0001] The invention relates to an iron-based catalyst for directly synthesizing low-carbon olefins from synthesis gas. 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 low-carbon...

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems 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 direct synthesis of low-carbon olefins from synthesis gas in the prior art. A new method of direct synthesis of low-carbon olefins from synthesis gas is provided An iron-based catalyst for olefins, which has the advantages of high CO conversion and high selectivity for low-carbon olefins in the product

Images