Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of platinum catalyst supported by porous titanium foam for methanol reforming combustor

A technology of porous foam and platinum catalyst, which is applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem that the catalyst loading method cannot fully meet the requirements, and achieves enhanced reliability and bonding strength, The effect of improving the utilization rate and strengthening the bonding strength

Active Publication Date: 2016-06-08
HARBIN INST OF TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the combustion chamber catalysts are platinum-based catalysts, and the catalyst loading and catalyst activity are important factors restricting the reaction. Only when the requirements are met can the combustion chamber provide sufficient long-term heat for the reforming chamber reaction, while the existing Catalyst loading method does not fully meet the requirements

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 platinum catalyst supported by porous titanium foam for methanol reforming combustor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Place the cut porous titanium foam in an electrolytic cell, and use it as the anode, and the electrolytic cell as the cathode, with 5~15g / L Na 3 AlO 3 As electrolyte, with 300~600V DC voltage, 0.05~0.30A / cm 2 Micro-arc oxidation treatment with a constant current density of 20~180 minutes to prepare aluminum titanate ceramic film.

[0018] Place the generated porous titanium foam covered with aluminum titanate oxide ceramic film in a tube furnace, and perform high-temperature sintering treatment at 600~900℃ for 10~120 minutes to form alumina and titania-containing ceramics membrane.

[0019] The porous titanium foam after surface modification is immersed in Pt(NH 3 ) 4 (NO 3 ) 2 In the catalyst precursor solution, the concentration of Pt is 0.01~0.1mol / L. After immersing for 5-30 minutes, dry, and then in N 2 The calcination process is carried out at 400 to 800°C in an atmosphere. Before use in H 2 (25%, v%) N 2 In the atmosphere, reduce at 300~500℃ for 2 hours.

[0020] Put ...

Embodiment 2

[0022] The difference between this example and Example 1 is that the electrolyte contains 10g / L of Na 3 AlO 3 , DC voltage is 500V, current density is 0.10A / cm 2 , Processing time is 60 minutes.

Embodiment 3

[0024] The difference between this example and Embodiment 1 is that the porous titanium foam is subjected to micro-arc oxidation treatment using AC voltage, and the treatment conditions are: positive voltage is 300~700V, negative voltage is 0~200V, working frequency is 10~3000Hz, The duty cycle is 10~60%, and the processing time is 20~180min.

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 platinum catalyst used in a methanol reforming combustor with porous titanium foam as a carrier, and belongs to the field of proton exchange ceramic membrane fuel cells. The method uses porous titanium foam as an anode, places it in an electrolytic solution containing aluminate, applies direct current or alternating current to carry out micro-arc oxidation treatment, and then sinters the generated ceramic film at high temperature to form a porous and dense oxide ceramic film , and use it as a carrier to carry platinum-based catalysts to form platinum-based catalysts for methanol reforming combustors. Compared with the existing catalyst preparation method, the present invention can effectively solve the problems of insufficient platinum load, small contact area with reactants and catalytic activity in the current methanol reforming combustion chamber, thereby effectively improving the overall performance of the battery.

Description

technical field [0001] The invention belongs to the field of proton exchange ceramic membrane fuel cells, and relates to a method for preparing a platinum-based catalyst used in methanol reforming fuel cells. Background technique [0002] With the continuous change and revolution of the energy structure, new energy technology has attracted more and more attention due to its characteristics of cleanliness, low pollution, and renewability. It has more advantages in performance and price, so it has become one of the hot spots. As a high-tech fuel cell technology, direct methanol fuel cell (PEMFC) is widely used in micro-electromechanical systems, micro-robots, and micro-medicine due to its advantages of high efficiency, high energy density, good portability, low fuel price, easy replenishment, and low pollution. There are broad application prospects in medical devices and personal mobile communication devices. In order to solve the inherent problems of direct methanol fuel ce...

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 Patents(China)
IPC IPC(8): B01J23/42B01J35/10B01J37/34H01M4/92
CPCY02E60/50
Inventor 张雪林张宇峰陈海龙刘晓为
Owner HARBIN INST OF TECH