Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for preparing silver-Raney copper catalyst, catalyst prepared by method and application

A technology of Raney copper and catalyst, which is applied in the field of preparation of silver-Raney copper catalyst, can solve the problem that silver doping content cannot be precisely controlled, and achieve high utilization rate, high operating space velocity and high copper loading capacity Effect

Active Publication Date: 2018-04-24
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Beijing Research Institute of Chemical Industry uses silver nitrate to prepare silver-modified Raney copper catalyst as a catalyst, which can effectively improve the reaction space velocity and catalyst selectivity of the catalyst. The disadvantage is that the silver nitrate solution is prone to hydrolysis and the silver doping content cannot be accurately controlled. Adopting an effective method to solve the problem of silver source solution hydrolysis

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
  • Method for preparing silver-Raney copper catalyst, catalyst prepared by method and application
  • Method for preparing silver-Raney copper catalyst, catalyst prepared by method and application
  • Method for preparing silver-Raney copper catalyst, catalyst prepared by method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) After crushing the copper and aluminum alloys into alloy blocks of about 0.9-3.2mm, weigh 200g of alloy blocks, and slowly add 20% sodium hydroxide (sodium hydroxide mass 200g) solution in batches, and the activation time is 2h . The catalyst treated by the above steps is washed with 1000 mL of deionized water at 20-40°C for 20-40 times until the pH of the washing solution is 8 to obtain a Raney copper catalyst;

[0059] (2) Preparation of silver solution: weigh 1.2g of silver nitrate (molar weight: 7.1mmol), add 10mL of deionized water and stir until dissolved, measure 2.3mL of ethylenediamine solution (ethylenediamine density: 0.9g / mL) Add dropwise to 10mL deionized water to form a uniform solution. The molar ratio of ethylenediamine to silver is 5:1. Add the aqueous solution of ethylenediamine to the silver nitrate solution dropwise to form a transparent and uniform solution. The solution is fixed in a 200mL volumetric flask to form a 3.0mgAg / mL solution. Silve...

Embodiment 2

[0062] (1) After crushing the copper and aluminum alloys into alloy blocks of about 0.9-3.2mm, weigh 200g of alloy blocks, and slowly add 20% sodium hydroxide (sodium hydroxide mass 200g) solution in batches, and the activation time is 2h . The catalyst treated by the above steps is washed with 1000 mL of deionized water at 20-40°C for 20-40 times until the pH of the washing solution is 8 to obtain a Raney copper catalyst;

[0063] (2) Preparation of silver solution: weigh 1.2g of silver nitrate (molar weight: 7.1mmol), add 10mL of deionized water and stir until dissolved, measure 2.3mL of ethylenediamine solution (ethylenediamine density: 0.9g / mL) Add dropwise to 10mL deionized water to form a uniform solution. The molar ratio of ethylenediamine to silver is 5:1. Add the aqueous solution of ethylenediamine to the silver nitrate solution dropwise to form a transparent and uniform solution. The solution is fixed in a 200mL volumetric flask to form a 3.0mgAg / mL solution. Silve...

Embodiment 3

[0066] (1) After crushing the copper and aluminum alloys into alloy blocks of about 0.9-3.2mm, weigh 200g of alloy blocks, and slowly add 20% sodium hydroxide (sodium hydroxide mass 200g) solution in batches, and the activation time is 2h . The catalyst treated by the above steps is washed with 1000 mL of deionized water at 20-40°C for 20-40 times until the pH of the washing solution is 8 to obtain a Raney copper catalyst;

[0067] (2) Preparation of silver solution: weigh 1.2g of silver nitrate (molar weight: 7.1mmol), add 10mL of deionized water and stir until dissolved, measure 2.3mL of ethylenediamine solution (ethylenediamine density: 0.9g / mL) Add dropwise to 10mL deionized water to form a uniform solution. The molar ratio of ethylenediamine to silver is 5:1. Add the aqueous solution of ethylenediamine to the silver nitrate solution dropwise to form a transparent and uniform solution. The solution is fixed in a 200mL volumetric flask to form a 3.0mgAg / mL solution. Silve...

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 discloses a method for preparing a silver-Raney copper catalyst, a catalyst prepared by the method and an application. The method comprises the steps of during the preparation of a silver source solution, firstly, preparing a mixed solution from soluble organic amine and water, and then, dissolving a soluble silver salt and soluble salts of other auxiliaries. The soluble organic amine comprises one or more of edetic acid, triethanolamine, diethanolamine, ethanolamine, ethylenediamine, butylamine, isopropylamine, aniline, N,N-dimethylaniline, lauryl amine, triethylene diamine, cyclohexylamine and hexamethylene tetramine. According to the method disclosed by the invention, the consumption of silver during preparation is lowered, and the production cost is reduced; silver-Raneycopper alloy particles have high-dispersed copper particles after activation, the utilization ratio of active ingredients is high, the hydrogenation activity is high, and the running air speed is high; and the silver-Raney copper catalyst achieves high copper load capacity, silver can be used for isolating a metal-copper active ingredient, the life of the catalyst is effectively prolonged, and theloss rate of 1,3-butadiene is lowered.

Description

technical field [0001] The invention relates to the field of catalysts for selective hydrogenation and alkyne removal, and furthermore, relates to a preparation method of a silver-Raney copper catalyst, a catalyst prepared therefrom and an application thereof. Background technique [0002] 1,3-butadiene is an important chemical raw material for the production of synthetic rubber. The cracked mixed carbon four contains about 40-50% of 1,3-butadiene, which is the main source of butadiene. Polymerized dienes have high requirements on alkyne impurities. For example, polymerized butadiene requires a purity of more than 99.7% and an alkyne content of less than 50ppm. In order to meet the requirements of the polymerization grade, it is necessary to remove alkyne from the C4 fraction. At present, the industrial separation of butadiene from mixed carbon four mainly adopts two-stage solvent extraction and rectification technology, wherein one stage separates butene, butane, etc. from...

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): B01J31/28B01J25/00C07C7/167C07C11/167
CPCB01J25/00B01J31/28C07C7/167C07C11/167
Inventor 吴佳佳乐毅王秀玲鲁树亮彭晖刘海江汪晓菁郝雪松徐洋戴伟
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com