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Catalyst, method for producing the same, and use of the same

A manufacturing method and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as carbon and nitrogen oxides that have not been discussed, and achieve the effect of low-cost performance and high oxygen reduction ability

Inactive Publication Date: 2011-01-26
RESONAC HOLDINGS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] However, the carbonitride disclosed in Patent Document 4 is a thin-film magnetic head ceramic substrate material, and there is no study on the use of the carbonitride as a catalyst.

Method used

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  • Catalyst, method for producing the same, and use of the same
  • Catalyst, method for producing the same, and use of the same
  • Catalyst, method for producing the same, and use of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] 1. Preparation of Catalyst

[0136] Titanium carbide (TiC) 5.10g (85mmol), titanium oxide (TiO 2 ) 0.80 g (10 mmol) and 0.31 g (5 mmol) of titanium nitride (TiN) were well mixed, and heated at 1800° C. in a nitrogen atmosphere for 3 hours to obtain 5.73 g of titanium carbonitride. Since it is a sintered body, the obtained titanium carbonitride was pulverized with an automatic mortar.

[0137] The powder X-ray diffraction spectrum of the obtained titanium carbonitride is shown in figure 1 .

[0138] In addition, Table 1 shows the elemental analysis results of the obtained titanium carbonitride.

[0139] While flowing nitrogen gas containing 1% by volume of oxygen and 4% by volume of hydrogen, 298 mg of the obtained titanium carbonitride was heated in a tubular furnace at 1000° C. for 10 hours to obtain titanium carbonitride (hereinafter also referred to as "Catalyst (1)".) 393mg.

[0140] The powder X-ray diffraction spectrum of the catalyst (1) obtained is shown in...

Embodiment 2

[0153] 1. Preparation of Catalyst

[0154] While flowing nitrogen gas containing 1.5% by volume of oxygen and 4% by volume of hydrogen, 314 mg of titanium carbonitride obtained in Example 1 was heated in a tubular furnace at 1000° C. for 3 hours, thereby obtaining titanium carbonitride (Hereafter also referred to as "catalyst (2)".) 411 mg.

[0155]The powder X-ray diffraction spectrum of the catalyst (2) obtained is shown in Figure 4 .

[0156] In addition, the elemental analysis results of the catalyst (2) are shown in Table 1.

[0157] 2. Manufacture of electrodes for fuel cells

[0158] Except having used the above-mentioned catalyst (2), it carried out similarly to Example 1, and obtained the electrode (2) for fuel cells.

[0159] 3. Evaluation of Oxygen Reduction Capacity

[0160] The catalytic ability (oxygen reducing ability) was evaluated in the same manner as in Example 1, except that the fuel cell electrode (2) described above was used.

[0161] Figure 5 Th...

Embodiment 3

[0164] 1. Preparation of Catalyst

[0165] While flowing nitrogen gas containing 1.0% by volume of oxygen and 1.3% by volume of hydrogen, 314 mg of titanium carbonitride obtained in Example 1 was heated in a tubular furnace at 1000° C. for 3 hours, thereby obtaining titanium carbonitride (Hereafter also referred to as "catalyst (3)".) 415 mg.

[0166] The powder X-ray diffraction spectrum of the catalyst (3) obtained is shown in Figure 7 .

[0167] In addition, the elemental analysis results of the catalyst (3) are shown in Table 1.

[0168] 2. Manufacture of electrodes for fuel cells

[0169] Except having used the above-mentioned catalyst (3), it carried out similarly to Example 1, and obtained the electrode (3) for fuel cells.

[0170] 3. Evaluation of Oxygen Reduction Capacity

[0171] The catalytic ability (oxygen reducing ability) was evaluated in the same manner as in Example 1, except that the fuel cell electrode (3) described above was used.

[0172] Figure 6...

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Abstract

Disclosed is a catalyst having excellent durability and high oxygen-reducing ability, which is not corroded in an acidic electrolyte or at high potentials. Specifically disclosed is a catalyst composed of a titanium oxycarbonitride. The titanium oxycarbonitride preferably has a composition represented by the following formula: TiCxNyOz (wherein x, y and z represent atomic number ratios satisfying 0 < x = 1.0, 0 < y = 1.0, 0.1 = z < 2.0, 1.0 < x + y + z = 2.0 and 2.0 = 4x + 3y + 2z). The catalyst is preferably used for fuel cells.

Description

technical field [0001] The present invention relates to a catalyst, a method for its manufacture and its use. Background technique [0002] Fuel cells are classified into various types according to the type of electrolyte or the type of electrodes, and typical types include alkali type, phosphoric acid type, molten carbonate type, solid electrolyte type, and solid polymer type. Among them, solid polymer fuel cells that can operate at low temperatures (about -40°C) to about 120°C have attracted attention, and have been developed and put into practical use as low-pollution power sources for automobiles in recent years. As applications of solid polymer fuel cells, driving sources for vehicles and stationary power sources have been studied, but durability over a long period of time is required in order to be suitable for these applications. [0003] The polymer solid fuel cell is a polymer solid electrolyte sandwiched between an anode and a cathode, fuel is supplied to the anod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J37/08H01M4/90H01M8/10
CPCH01M2008/1095B01J27/24Y02E60/50H01M4/9016B01J21/063
Inventor 狮々仓利一门田隆二黑住忠利
Owner RESONAC HOLDINGS CORPORATION
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