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

A technology of cerium-based oxides and deoxidizers, applied in the field of deoxidation, can solve the problems of high deoxidation temperature and activation temperature, low deoxidation capacity, high operating energy consumption, etc., achieve strong market competitiveness, high deoxidation capacity, and reduce operating energy consumption Effect

Active Publication Date: 2017-02-08
DALIAN CATALYTIC ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 500g Ce(OH) 4 Calcined at 450° C. for 2 hours to obtain carrier powder and set aside.

[0031] Take 1000gMnCO 3 , 265gCu 2 (OH) 2 CO 3 Fully mixed with the above carrier and crushed to below 300 mesh, then mixed with 200g of ethyl titanate, and then extruded with an extruder using the existing technology to form, after forming, let it stand in the air to dry, and after drying, place it at 400°C Calcined for 4 hours and naturally cooled to room temperature to obtain an olefin deoxidizer for use.

Embodiment 2

[0033] Take 900g Ce(OH) 4 and 200 g of pseudo-boehmite were fully mixed and then calcined at 450° C. for 2 hours to obtain carrier powder, which was set aside.

[0034] Take 1000gMnCO 3 , 150gCu 2 (OH) 2 CO 3 , 115g of kaolin and the above-mentioned carrier are fully mixed and pulverized to below 300 meshes, and then roll-molded with a sugar-coating machine using the existing technology. After the molding, let it stand in the air to dry, and after drying, bake it at 400 ° C for 4 hours and cool it naturally to room temperature, the olefin deoxidizer is ready for use.

Embodiment 3

[0036] Take 180g Ce(OH) 4 , 80gZr(OH) 4 After fully mixing, bake at 450° C. for 2 hours to obtain carrier powder, which is ready for use.

[0037] Take 1000gMnCO 3 , 265gCu 2 (OH) 2 CO 3 , 53g of kaolin and the above-mentioned carrier are fully mixed and pulverized to below 300 meshes, and then roll-molded with a sugar-coating machine using the existing technology. After molding, let it stand in the air to dry, and after drying, bake it at 400 ° C for 4 hours and cool naturally to room temperature, the olefin deoxidizer is ready for use.

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889C07C7/148C07C11/02
CPCB01J23/8892C07C7/1485C07C11/04
Inventor 刘振峰杜霞茹肖菲李楠吴熠徐卫侯蕾
Owner DALIAN CATALYTIC ENG TECH
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