Catalyst for preparing 1, 4-butynediol and preparation method thereof

A technology of butynediol and catalyst, which is applied in the field of catalyst for producing 1,4-butynediol and its preparation field, can solve the problems of unfavorable large-scale industrial production, easy loss of catalyst, etc., and achieves high selectivity and difficult pulverization. , high-strength effect

Inactive Publication Date: 2014-01-01
大连瑞克科技股份有限公司
View PDF3 Cites 59 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 1,4-butanediol is an important chemical raw material, it is produced by hydrogenation of 1,4-butynediol, 1,4-butynediol is produced by the reaction of acetylene and formaldehyde with acetylene copper catalyst Obtained, in U.S. Patent US 4110249, propose to use a kind of spherical crystal malachite as catalyst, this catalyst is quite satisfactory, but the catalyst is easy to lose due to grinding during use, which is unfavorable for large-scale industrialized production

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First, weigh 400g of nano-silica, add it into 100g of 1.0mol / L hydrochloric acid solution, stir at 60°C for 3h, filter, wash, and dry at 120°C for later use.

[0017] Take 100 g of the above-mentioned treated nano-silica, add 1.6 L of 1.5 mol / L copper nitrate solution, add 24.2 g of bismuth nitrate, and stir to form a mixed slurry A.

[0018] Neutralization reaction, adopt 1mol / L sodium carbonate solution, add silica sol, make the content of silicon dioxide in the sodium carbonate solution 1.3%, this solution is counted as B; B solution is added dropwise in A solution to the end point PH= 7.0, stirring for 30 minutes. Filter, wash, dry, and calcinate at 500°C for 3 hours to obtain the 1,4-butynediol catalyst, the sample number is 1.

Embodiment 2

[0020] Take 100 g of nano silicon dioxide treated in Example 1, add 0.8 L of 1.5 mol / L copper sulfate solution, add 18.15 g of bismuth nitrate, and stir to form mixed slurry A.

[0021] Neutralization reaction, using 2.0mol / L potassium carbonate solution, adding silica sol, so that the content of silicon dioxide in the sodium carbonate solution is 3.25%, this solution is counted as B; add B solution to A solution dropwise to the final pH =7.2, stirred for 30 minutes. Filtrate, wash, dry, and bake at 400°C for 3 hours to obtain 1,4-butynediol catalyst, sample number 2.

[0022] The samples were evaluated by the aforementioned catalyst activation and evaluation methods, and the results are shown in Attached Table 1.

[0023] Attached Table 1: Catalyst evaluation results for 1,4-butynediol

[0024] Sample serial number Formaldehyde conversion % Butynediol selectivity% Propylene Alcohol Selectivity% sample 1 95.4 97.6 1.4 sample 2 96.6 98.8 1.3 ...

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
specific surface areaaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a catalyst for preparing 1, 4-butynediol and a preparation method of the catalyst for preparing 1, 4-butynediol. According to the method, acidized nano-silica is adopted as a carrier, the adopted nano-silica has a large outer specific surface, a dipping method and a deposition-precipitation method are used for adsorbing copper and bismuth on the carrier, so that the catalyst comprises 35-65% of copper oxide by mass, and meanwhile silica sol is added, so that the catalyst is more stable and abrasion resistant. The prepared catalyst is good in activity, high in selectivity and strength, not prone to pulverizing in the process of using and capable of keeping high activity.

Description

technical field [0001] The invention relates to a catalyst for producing 1,4-butynediol and a preparation method thereof, belonging to the field of catalyst and fine chemical industry. Background technique [0002] 1,4-butanediol is an important chemical raw material, it is produced by hydrogenation of 1,4-butynediol, 1,4-butynediol is produced by the reaction of acetylene and formaldehyde with acetylene copper catalyst Therefore, the U.S. Patent No. 4,110,249 proposes to use a spherical crystal form of malachite as a catalyst. This catalyst is quite satisfactory, but the catalyst is easily lost due to grinding during use, which is unfavorable for large-scale industrial production. Contents of the invention [0003] In order to overcome the problems existing in the prior art, the present invention provides a catalyst for producing 1,4-butynediol and a preparation method thereof. Part of silica gel should be added during the preparation of the catalyst, which can significan...

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 Applications(China)
IPC IPC(8): B01J23/843
Inventor 周焕文邓少亮
Owner 大连瑞克科技股份有限公司
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