Preparation of copper, zinc and aluminum methanol synthesizing catalyst by virtue of reduction deposition method

A methanol synthesis, copper-zinc-aluminum technology, applied in catalyst activation/preparation, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems affecting catalyst activity, copper sintering, etc., to achieve Effects of Small Crystal Size, High Activity, High Methanol Synthesis Performance and Thermal Stability

Active Publication Date: 2016-04-06
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most catalysts are reductively activated before use. This process has strict requirements on programmed temperature rise and hydrogen content. Improper operation will lead to sintering of the active component copper in the catalyst, there

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
  • Preparation of copper, zinc and aluminum methanol synthesizing catalyst by virtue of reduction deposition method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 22.31g of zinc nitrate hexahydrate and 11.25g of aluminum nitrate nonahydrate and dissolve in 100mL of deionized water, under stirring, add 1mol / L sodium carbonate solution to the above mixed nitrate solution, to pH=7, filter to obtain The filter cake was washed with water to remove Na + , the filter cake was dried at 100 °C, and then calcined at 300 °C for 2 h in an air atmosphere to obtain the carrier ZnO-Al 2 O 3 ; Weigh 4.68g of copper sulfate pentahydrate and dissolve it in 50mL of deionized water, and add it dropwise with 10% ammonia water to obtain a cupro-ammonia solution. At the same time, add water to dilute to 100mL of solution and preheat to 40°C to prepare 70mL of 0.4mol / L hydrazine hydrate. solution and preheated to 40 °C, the carrier ZnO-Al 2 O 3 Disperse in 200mL of 1mol / L sodium hydroxide solution and preheat to 40°C, add cuprammonium solution and hydrazine hydrate solution to 1mol / L sodium hydroxide solution at the same time and stir vigorousl...

Embodiment 2

[0020] Weigh 26.77g of zinc nitrate hexahydrate and 11.25g of aluminum nitrate nonahydrate and dissolve in 100mL of deionized water. Under stirring conditions, add 1mol / L sodium bicarbonate solution to the above mixed nitrate solution to pH=7, filter The obtained filter cake is washed with water to remove Na + , the filter cake was dried at 100 °C, and then calcined at 400 °C for 2 h in an air atmosphere to obtain the carrier ZnO-Al 2 O 3 ; Weigh 18.73g of copper sulfate pentahydrate and dissolve it in 100mL of deionized water, and add it dropwise with 20% ammonia water to obtain a cupro-ammonia solution. At the same time, add water to dilute to 200mL solution and preheat to 50°C, prepare 200mL 3mol / L glucose aqueous solution and preheat it. Heat to 50 °C, the carrier ZnO-Al 2 O 3 Disperse in 200 mL of 1 mol / L sodium hydroxide solution and preheat to 50°C, add cuprammonium solution and hydrazine hydrate solution to 1 mol / L sodium hydroxide solution at the same time and stir...

Embodiment 3

[0022] Weigh 31.24g of zinc nitrate hexahydrate and 11.25g of aluminum nitrate nonahydrate and dissolve in 200mL of deionized water. Under stirring conditions, add 1mol / L sodium hydroxide solution to the above mixed nitrate solution to pH=7, filter The obtained filter cake is washed with water to remove Na + , the filter cake was dried at 100 °C, and then calcined at 300 °C for 2 h in an air atmosphere to obtain the carrier ZnO-Al 2 O 3 ; Weigh 52.43g of copper sulfate pentahydrate and dissolve it in 200mL of deionized water, and add it dropwise with 20% ammonia water to obtain a cupro-ammonia solution. At the same time, add water to dilute to 300mL of solution and preheat to 70°C to prepare 150mL of 2mol / L sodium borohydride aqueous solution. and preheated to 70 °C, the carrier ZnO-Al 2 O 3 Disperse in 200mL of 1mol / L sodium hydroxide solution and preheat to 70°C, add cuprammonium solution and sodium borohydride aqueous solution to 1mol / L sodium hydroxide solution at the s...

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

No PUM Login to view more

Abstract

The invention relates to a preparation method for a methanol synthesizing catalyst and belongs to the technical field of catalyst preparation. The preparation method comprises the steps of: first, preparing a mixed solution of zinc nitrate and aluminum nitrate and an alkaline precipitator solution, adding the alkaline precipitator solution into the mixed solution till the pH is 7, and then washing, drying and roasting the mixed solution to obtain a ZnO-Al2O3 carrier; then preparing an ammonia water solution and a reducing agent solution of copper sulfate, dispersing the ZnO-Al2O3 carrier in a sodium hydroxide solution, at a reaction temperature, simultaneously adding the ammonia water solution and the reducing agent solution of the copper salt into the sodium hydroxide solution containing the carrier, continuously stirring the solution, and continuously stirring the solution after addition; and finally, washing, drying, roasting and moulding a solid obtained by solid-liquid separation to obtain the copper, zinc and aluminum catalyst. The copper, zinc and aluminum catalyst prepared by the preparation method has the advantages that the active ingredient Cu is small in grain size and high in dispersity. Compared with a catalyst prepared by virtue of a traditional coprecipitation method or a step-by-step precipitation method, the methanol yield is high and the thermal stability is good.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and relates to a preparation method of a copper-zinc-aluminum methanol synthesis catalyst. Background technique [0002] Methanol is a widely used chemical raw material, potential energy carrier and clean fuel. With the rapid development of modern industry and the gradual improvement of awareness of energy and environmental issues, the demand for methanol will continue to increase in the future. The production of industrial methanol mainly uses synthesis gas as raw material, and the catalysts used are mainly copper-zinc-aluminum catalysts. At present, the scale of methanol production is expanding day by day, which puts forward higher requirements on the performance of catalysts, not only high activity, methanol selectivity and stability, but also high requirements on the content of some by-products, such as in the production of acetic acid In production, the content of ethanol in ra...

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
IPC IPC(8): B01J23/80B01J37/00C07C31/04C07C29/154
CPCY02P20/52
Inventor 贺健于杨陈海波毛春鹏王琼仇冬殷惠琴谢天明檀结东田先国董天雷
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap