Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation method of silsesquioxane complex catalyst with excellent activity

A technology of silsesquioxane and catalyst, which is applied in the field of electrochemical power supply to achieve the effect of preventing aggregation, improving activity and improving performance

Inactive Publication Date: 2013-11-27
NANTONG UNIVERSITY
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no systematic study of POSS-transition metal complexes as catalysts for anodic oxidation of formic acid at home and abroad.

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 method of silsesquioxane complex catalyst with excellent activity
  • Preparation method of silsesquioxane complex catalyst with excellent activity
  • Preparation method of silsesquioxane complex catalyst with excellent activity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: the preparation of POSS-Co complex catalyst

[0036] The synthetic route of POSS-Co complex is as follows figure 1 shown. Divided into the following steps:

[0037] (1). Preparation of isobutyl-POSS trisilanol: Add 4.36g (5mmol) of isobutyl octasilsesquioxane to a 500mL flask, dissolve it in 250mL of chloroform, and place it in an oil bath at 55°C Heating on top, slowly adding 0.8-1.6mL of concentrated sulfuric acid dropwise, stirring for 18h and recrystallizing with tetrahydrofuran to obtain about 3.21g of isobutyl-POSS trisilanol with a yield of 75-81%.

[0038] (2). The preparation of tetrabutylamine cobalt trichloride salt, 2g CoCl 2 .6H 2 O (8.4mmol) was dissolved in 100mL of 9M hydrochloric acid, and 16.8mL of 1mol / L tetrabutylammonium chloride solution (4.66g, 16.8mmol) was added dropwise under vigorous stirring, and a pink precipitate was obtained immediately. After washing, vacuum-dry to obtain quaternized cobaltous chloride (2.8g, 6.8mmol, yie...

Embodiment 2

[0046] Embodiment 2: the preparation of POSS-VO complex catalyst

[0047] (1). Preparation of isobutyl-POSS trisilanol: same as Example 1.

[0048] (2). The preparation of tetrabutylamine vanadyl chloride tetrachloride, the [Bu of 1.024g 4 ]VO 3 (3mmol) was dissolved in 20mL of 9M hydrochloric acid, stirred overnight under the condition of vigorous stirring, then added DMSO and cooled to -10°C to obtain yellow crystals, which were tetrabutylamine vanadyl tetrachloride, and the product quality was 1.03g , yield 83%, use benzene as solvent to dissolve and obtain the solution B liquid of metal salt;

[0049] (3). Dissolve the isobutyl-POSS trisilanol (2.5mmol, 1.98g) prepared in the above step (1) in 30-35mL of toluene to liquid A, and then add 0.35-0.7mL to liquid A (2.5 ~ 5mmol) of triethylamine as a catalyst, after stirring at room temperature for 10min, slowly add 2.5 ~ 5mL of 1mol / L liquid B to mix, and stir overnight in an oil bath at 40°C, using the hydroxyl group as th...

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 preparation method of a silsesquioxane complex catalyst with excellent activity. The preparation method comprises the following steps: opening a silicon-oxygen bond of silsesquioxane by using sulfuric acid as a catalyst to obtain trihydroxy silsesquioxane (POSS) tri-silanol which is subjected to polycondensation incompletely, quaternizing metal halide salt to obtain quaternized metal halide salt, generating a POSS complex, preparing an anode catalyst emulsion, modifying the catalyst to a substrate electrode and the like. The preparation method provided by the invention has the characteristics of simplicity and convenience, high efficiency, environment friendliness and the like, provides a feasible path for the synthesis of the anodic oxidation catalyst for the high-quality direct formic acid fuel cells, and has a bright application prospect in fields of the anodic oxidation catalyst for the formic acid fuel cells and the like. The immobilized metal catalyst can prevent the aggregation of metal substances effectively, thus high activity and selectivity and long service life are expressed.

Description

[0001] This application is a divisional application with application number: 201210060099.5, filing date: 2012.3.8, and titled "Preparation Method of Silsesquioxane Complex Catalyst for Direct Formic Acid Fuel Cell". technical field [0002] The invention relates to the field of electrochemical power sources, and relates to a preparation method of an anode oxidation catalyst of a formic acid fuel cell. Background technique [0003] Compared with direct methanol fuel cell (DMFC), direct formic acid fuel cell (DFAFC) has many advantages, such as formic acid is non-toxic, non-flammable, good electrochemical oxidation, high proton conductivity, and the permeability of proton exchange membrane Low and high usable concentration, DFAFC has high electromotive force and high output power density at low temperature, etc., and has the most potential to become an ideal power supply for small household appliances, sensors, mobile phones, and military mobile instruments. And because of it...

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): B01J31/22
Inventor 葛存旺缪建文詹文毅缪勤华金永龙黄明宇倪红军
Owner NANTONG UNIVERSITY
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
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com