A manganese deoxidizer adopting a cerium-based oxide as a carrier, a preparing method thereof and applications of the deoxidizer

Abstract

The invention relates to deoxidization techniques in the chemical industry and particularly provides a manganese deoxidizer adopting a cerium-based oxide as a carrier, a preparing method thereof and applications of the deoxidizer. A catalyst comprises active components, a carrier and an adhesive, wherein the active components include Cu and MnO and account for 35-75% by weight of the catalyst, the carrier is CeO2 or a CeO<2>-MOx composite oxide and accounts for 20-50% by weight of the catalyst, and the adhesive is one or more selected from a group consisting of kaolin, high-alumina cement, pseudo-boehmite and titanate and accounts for 1-20% by weight of the catalyst. A product of the manganese deoxidizer is suitable for activation and regeneration conditions of polyolefin apparatuses at present, and is high in deoxidization capacity and long in service lifetime, and therefore the product is suitable for large-scale industrial application.

Description

technical field [0001] The invention relates to the deoxidation technology in the chemical industry, and in particular provides a manganese-based deoxidizer with cerium-based oxide as a carrier, a preparation method and application thereof. Background technique [0002] Relevant patent documents and catalysts used in industrial production to remove impurity oxygen are divided into two categories. The first category is catalytic deoxidizer, whose working principle is to use hydrogen or carbon monoxide in the gas source to undergo a chemical reaction under the action of the catalyst. Generate water or carbon dioxide to achieve the purpose of deoxidation. This kind of deoxidizer mostly uses Pt, Pd, Ru, etc. as active components, which has the advantages of high operating space velocity and high deoxidation efficiency; the disadvantage is that the catalyst is expensive, and the reaction needs to be strictly controlled. The dosage of carbon monoxide is not suitable for gases with...

AI Technical Summary

Problems solved by technology

[0008] At present, the existing olefin deoxidizers have low deoxidation capacity at room temperature, short regeneration cycle, high deoxidation temperature and activation temperature, resulting in high operating energy consumption