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Method for preparing copper-based catalyst for catalyzing carbon dioxide hydrogenation reduction

A technology for catalyzing carbon dioxide and copper-based catalysts, which is applied in physical/chemical process catalysts, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc. The effect of small size and large specific surface area

Inactive Publication Date: 2017-02-22
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[6] However, the preparation of catalysts by these methods is cumbersome, lengthy and requires precise control of reaction conditions.

Method used

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  • Method for preparing copper-based catalyst for catalyzing carbon dioxide hydrogenation reduction
  • Method for preparing copper-based catalyst for catalyzing carbon dioxide hydrogenation reduction
  • Method for preparing copper-based catalyst for catalyzing carbon dioxide hydrogenation reduction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of CuO / ZnO catalyst

[0035] Basic copper carbonate and basic zinc carbonate are compared according to the copper-zinc ion ratio Cu 2+ :Zn 2+ =7:3 Weigh it and add it to the ball mill tank 1, and add stainless steel balls according to the mass ratio of balls to material at 15:1. Then add an appropriate amount of acetone to the ball mill jar to make the powder sample into a paste, load the ball mill jar on the ball mill, and ball mill for 20 h (hours) at 200 rpm (rotation per minute), 300 rpm and 400 rpm respectively, where Stop once every 2 h, each stop 6 min (minutes). After ball milling, the steel balls were separated from the sample and the catalyst precursor was collected after the acetone volatilized. The obtained catalyst precursor was calcined at 320 °C for 3 h, and a black CuO / ZnO catalyst was obtained after the end. The XRD patterns of CuO / ZnO catalyst precursors synthesized at different ball mill speeds are as follows figure 2 shown.

[...

Embodiment 2

[0039] (1) Preparation of CuO / ZnO catalyst

[0040] Basic copper carbonate, basic zinc carbonate and zirconium oxide according to Cu 2+ :Zn 2+ :Zr 4+=2:1 Weigh it and add it to the ball mill tank 1, and add stainless steel balls according to the mass ratio of balls to material at 20:1. Then add an appropriate amount of acetone to the ball milling tank to make the powder sample into a paste, load the ball milling tank on the ball mill, and ball mill at 200 rpm, 300 rpm and 400 rpm for 30 h respectively, stop every 2 h, Stop for 10 minutes each time. After ball milling, the steel balls were separated from the sample and the catalyst precursor was collected after the acetone volatilized. The obtained catalyst precursor was calcined at 310 °C for 3 h, and a black CuO / ZnO catalyst was obtained after the end.

[0041] (2) Performance characterization of CuO / ZnO catalyst

[0042] The CuO / ZnO catalyst was reduced in hydrogen for 3 h, the reduction temperature was 280 °C, and the...

Embodiment 3

[0044] (1) CuO / ZnO / Al 2 o 3 Catalyst preparation

[0045] Basic copper carbonate, basic zinc carbonate and aluminum oxide according to Cu 2+ :Zn 2+ :Al 3+ =58:25:17 Weigh it and add it to the ball mill tank 1, and add stainless steel balls according to the mass ratio of balls to materials at 20:1. Then add an appropriate amount of acetone to the ball milling tank to make the powder sample into a paste, load the ball milling tank on the ball mill, and ball mill at 200 rpm, 300 rpm, and 400 rpm for 20 h, stop every 2 h, Stop for 12 minutes each time. After ball milling, the steel balls were separated from the sample and the catalyst precursor was collected after the acetone volatilized. The obtained catalyst precursor was calcined at 320 °C for 3 h, and black CuO / ZnO / Al was obtained after the end 2 o 3 catalyst.

[0046] (2) CuO / ZnO / Al 2 o 3 Catalyst Characterization

[0047] CuO / ZnO / Al 2 o 3 The catalyst was reduced in hydrogen for 3 h, the reduction temperature w...

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Abstract

The invention belongs to the technical field of copper-based catalyst preparation and particularly relates to a method for preparing a copper-based catalyst for catalyzing carbon dioxide hydrogenation reduction. High energy generated through ball milling makes metal ions of different compounds substitute for one another, and accordingly the copper-based catalyst for catalyzing carbon dioxide hydrogenation reduction is prepared. Specifically, at the air atmosphere, basic cupric carbonate, basic zinc carbonate and basic carbonate or oxides of other catalyst carriers and auxiliaries are mixed, then ball milling is conducted, the product is forged and reduced, and the catalyst is obtained. The method has the advantages of being easy to prepare, high in yield and the like. The catalyst prepared through the ball milling method is excellent in catalytic performance, can catalyze carbon dioxide hydrogenation reduction at 240 DEG C and at 3 MPa, and has good conversion efficiency.

Description

technical field [0001] The invention belongs to the technical field of preparation of copper-based catalysts, in particular to a method for preparing a copper-based catalyst for catalytic carbon dioxide hydrogenation reduction, in particular to a method for preparing a copper-based catalyst with high catalytic activity by using ball milling. Background technique [0002] Atmospheric CO 2 The increasing concentration has caused serious consequences such as global warming and frequent occurrence of disastrous climate. in reducing CO 2 How to recover and utilize CO while emitting 2 It has attracted the attention of governments and researchers from various countries. Chemically convert CO 2 Converted to useful chemical feedstock or fuel is CO 2 effective way to utilize resources. Catalytic reduction of carbon dioxide hydrogenation to methanol is one of the hotspots at home and abroad, and how to prepare a high-performance catalyst for catalytic carbon dioxide hydrogenation...

Claims

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Application Information

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IPC IPC(8): B01J23/80C07C31/04C07C29/159
CPCY02P20/52B01J23/002B01J23/80B01J2523/00C07C31/04B01J2523/31B01J2523/17B01J2523/27C07C29/159
Inventor 孙大林武汪洋方方宋云
Owner FUDAN UNIV
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