Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Metal catalyst carrier manufacturing method, metal catalyst carrier, fuel cell manufacturing method, and catalyst-carrying device

A technology of metal catalysts and manufacturing methods, applied in the direction of solid electrolyte fuel cells, fuel cells, metal/metal oxides/metal hydroxide catalysts, etc., can solve the problem of insufficient research on metal catalysts, no disclosure of metal catalysts, etc. question

Active Publication Date: 2015-09-09
TOYOTA JIDOSHA KK
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in Patent Document 1 and Patent Document 2, although it is disclosed that a supercritical fluid is used to improve the dispersibility of the metal catalyst with respect to the carrier base material, the suppression of the occurrence of variation in the particle diameter of the metal catalyst nothing public
In this way, in the prior art, sufficient research has not been conducted on the suppression of the occurrence of variation in the particle size of the metal catalyst.
In addition, there is still room for improvement regarding the improvement of the dispersibility of the metal catalyst in the carrier.

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
  • Metal catalyst carrier manufacturing method, metal catalyst carrier, fuel cell manufacturing method, and catalyst-carrying device
  • Metal catalyst carrier manufacturing method, metal catalyst carrier, fuel cell manufacturing method, and catalyst-carrying device
  • Metal catalyst carrier manufacturing method, metal catalyst carrier, fuel cell manufacturing method, and catalyst-carrying device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0034] figure 1 It is a schematic diagram showing the structure of a catalyst supporting device as one embodiment of the present invention. This catalyst loading device 100 loads a metal catalyst on a carrier using a supercritical fluid. In addition, in this embodiment, carbon dioxide in a supercritical state (hereinafter also referred to as "supercritical carbon dioxide") is used as the supercritical fluid. In addition, in the present embodiment, carbon nanotubes (hereinafter referred to as "CNTs") are used as carriers, and platinum (Pt) as a metal catalyst is supported on them.

[0035] The catalyst loading device 100 includes a processing chamber 101 , a carrier arrangement unit 110 , a fluid circulation nozzle 120 , a fluid supply unit 130 , a fluid discharge unit 140 , a fluid temperature control unit 150 , a control unit 160 , a pressure detection unit 162 and a temperature detection unit 164 . The processing chamber 101 is an airtight chamber capable of being filled w...

Embodiment 1

[0090] Figure 8 ) The treatment conditions of the adsorption process>

[0091] Process time: about 8 hours

[0092] Ambient temperature T F : About 45℃~50℃

[0093] Sample temperature T S Variation range: 50~120℃

[0094] Sample temperature T S The number of changes: 10 times (approximately constant cycle)

Embodiment 2

[0095] Figure 9 ) The treatment conditions of the adsorption process>

[0096] Process time: about 5 hours

[0097] Ambient temperature T F : About 45℃~50℃

[0098] Sample temperature T S Variation range: 50~120℃

[0099] Sample temperature T S The number of changes: 5 times (approximately constant cycle)

[0100] Figure 10 ) The treatment conditions of the adsorption process>

[0101] Process time: about 8 hours

[0102] Ambient temperature T F : About 48~50℃

[0103] Sample temperature T S Changes: None (maintained at around 120°C)

[0104] Figure 11 , Figure 12 It is an explanatory diagram for explaining the results of Examples 1 and 2 and a reference example. Figure 11 (A) shows a table summarizing a part of the treatment conditions of the adsorption step of each of Examples 1 and 2 and the reference example and the measurement results of platinum supported on CNTs. Figure 11 (B) is a graph showing the particle size distribution (number basis) of platin...

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

Provided is a technology capable of limiting the occurrence of variation in metal catalyst particle diameter when the metal catalyst is loaded on a carrier. A CNT substrate (10), on which carbon nanotube (11) (CNT (11)) carriers are arranged, is disposed inside a processing chamber (101). Carbon dioxide is supplied to the processing chamber (101). After putting the carbon dioxide in the processing chamber (101) in a supercritical state, a complex solution in which a platinum complex is solubilized is supplied to the processing chamber (101). The sample temperature (TS), which is the temperature of the CNT (11), is raised above the ambient temperature (TF) inside the processing chamber (101). The CNT substrate (10) is heated so that the temperature difference (ΔT) between the ambient temperature (TF) and the sample temperature (TS) repeatedly decreases and increases. After releasing the supercritical state of the supercritical fluid, the CNT substrate (10) is heated and the metal catalyst is deposited on the CNT surface.

Description

technical field [0001] The present invention relates to a metal catalyst carrier in which a metal catalyst is supported on the carrier. Background technique [0002] A metal catalyst may be supported in the above-mentioned voids of a support substrate having fine voids. For example, in a fuel cell, an electrode is composed of a conductive member having fine voids functioning as a diffusion path for a reactant gas, and in the voids of the conductive member, a metal catalyst for promoting an electrochemical reaction is loaded. platinum. Patent Documents 1 and 2 below have been proposed as techniques for supporting a metal catalyst in the voids of a support substrate having fine voids in this way. Patent Document 1 and Patent Document 2 disclose techniques in which a platinum complex solution is dispersed in supercritical carbon dioxide, and platinum is supported on a carbon nanotube substrate or a porous substrate arranged in the supercritical carbon dioxide. Substrate. ...

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): B01J37/02B01J37/08H01M4/88H01M4/96H01M8/10
CPCH01M4/88H01M4/926H01M2008/1095H01M8/10H01M4/96B01J23/70B01J21/18B01J21/185B01J37/02B01J37/08B01J23/56H01M4/9075Y02E60/50H01M4/8814H01M4/8846H01M4/9083
Inventor 难波良一
Owner TOYOTA JIDOSHA KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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