Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of needle-shaped copper-based catalyst

A copper-based catalyst and needle-shaped technology, which is applied in the field of preparation of needle-shaped copper-based catalysts, can solve the problems of harsh reaction conditions and limited catalyst activity, and achieve high dispersion of copper, avoid catalyst clusters, and high catalytic activity.

Active Publication Date: 2019-09-27
KUNMING UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the prepared catalysts have limited activity and harsh reaction conditions.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of needle-shaped copper-based catalyst
  • A kind of preparation method of needle-shaped copper-based catalyst
  • A kind of preparation method of needle-shaped copper-based catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: a kind of preparation method of acicular copper-based catalyst, concrete steps are as follows:

[0021] (1) Adding Cu(NO 3 ) 2 ·3H 2 O and Zn(NO 3 ) 2 ·6H 2 O is dissolved in 200ml deionized water to obtain mixed solution A, wherein Cu in mixed solution A 2+ Ions and Zn 2+ The molar ratio of ions is 5:4, Cu 2+ The ion concentration is 0.25mol / L;

[0022] (2) Under the condition that the temperature of the water bath is 70°C and stirring, drop the 1.0 mol / L sodium carbonate solution and the mixed solution A obtained in step (1) into the reaction vessel (beaker) at the same time, and control the sodium carbonate solution and the mixed solution A Dropping speed, make the pH value of mixed solution B in the beaker be 7, mixed solution B reacts 2.0h, washes, filters to obtain solid A;

[0023] (3) Under the condition that the temperature of the water bath is 50°C and stirring, according to the solid-liquid ratio g:mL of solid A and acetylacetone is 0.0...

Embodiment 2

[0027] Embodiment 2: a kind of preparation method of acicular copper-based catalyst, concrete steps are as follows:

[0028] (1) Adding Cu(NO 3 ) 2 ·3H 2 O and Zn(NO 3 ) 2 ·6H 2 O was dissolved in 200ml deionized water to obtain mixed solution A, in which Cu 2+ Ions and Zn 2+ The molar ratio of ions is 6:4, Cu 2+ The ion concentration is 0.10mol / L;

[0029] (2) Under the conditions of water bath temperature of 50°C and stirring, drop 0.5mol / L sodium carbonate solution and the mixed solution A obtained in step (1) into the reaction vessel at the same time, and control the dropping speed so that the mixed solution B in the reaction vessel The pH value of the mixture is 8, and the mixed solution B is reacted for 2.0h, washed and filtered to obtain the solid A;

[0030] (3) Under the condition that the temperature of the water bath is 60°C and stirring, according to the solid-liquid ratio g:mL of solid A and acetylacetone is 0.075:1, add the solid A obtained in step (2) t...

Embodiment 3

[0032] Embodiment 3: a kind of preparation method of acicular copper-based catalyst, concrete steps are as follows:

[0033] (1) Adding Cu(NO 3 ) 2 ·3H 2 O and Zn(NO 3 ) 2 ·6H 2 O was dissolved in 200ml deionized water to obtain mixed solution A, in which Cu 2+ Ions and Zn 2+ The molar ratio of ions is 7:4, Cu 2+ The ion concentration is 0.30mol / L;

[0034] (2) Under the condition that the temperature of the water bath is 80°C and stirring, drop the 1.5mol / L sodium carbonate solution and the mixed solution A obtained in step (1) into the reaction vessel at the same time, and control the dropping speed so that the mixed solution B in the reaction vessel The pH value of the solution is 6, and the mixed solution B is reacted for 1.0h, washed and filtered to obtain the solid A;

[0035] (3) Under the condition that the temperature of the water bath is 70°C and stirring, according to the solid-liquid ratio g:mL of solid A and acetylacetone is 0.1:1, add the solid A obtaine...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of a needle-shaped copper-based catalyst and belongs to the technical field of nanocatalysts. In the present invention, the copper nitrate solution and the zinc nitrate solution are uniformly mixed to obtain mixed liquid A; the sodium carbonate solution and mixed liquid A are simultaneously dropped into a beaker to obtain mixed liquid B, and the pH value of mixed liquid B in the beaker is controlled to be 6 to 8 , mixed liquid B is aged for 1.0~2.0h, washed and filtered to obtain solid A; solid A is added to acetylacetone to react for 1~2h, filtered, dried and roasted to obtain needle-shaped copper-based catalyst; the present invention adopts complex precipitation reaction The process for preparing needle-shaped copper-based catalysts is simple, and the prepared needle-shaped copper-based catalysts have high catalytic activity.

Description

technical field [0001] The invention relates to a preparation method of a needle-shaped copper-based catalyst, which belongs to the technical field of nanometer catalysts. Background technique [0002] With the massive consumption of fossil fuels around the world, the harm caused by greenhouse gas emissions has far exceeded people's expectations. Among all greenhouse gases, CO 2 Contributes the most to the greenhouse effect. Methanol is one of the most produced chemicals in the world. It can not only be used as a raw material for the production of organic substances such as formaldehyde, ethylene, and propylene, but also can replace traditional fossil energy as a fuel for motor vehicles. [0003] Due to CO 2 The chemical inertness and thermodynamic factors of the reaction, CO 2 It is difficult to be activated and reduced and the selectivity of methanol synthesis is low, so CO 2 Hydrogenation to produce CH 3 One of the keys to the industrialization of OH is to obtain hi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J31/26B01J31/02B01J35/02B01J35/00
CPCB01J31/0208B01J31/26B01J31/28B01J35/00B01J35/30
Inventor 王华程鹏泽高文桂纳薇王禹皓李艳艳徐毛毛邢艳彬
Owner KUNMING UNIV OF SCI & TECH