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Catalyst for removing carbon monoxide in hydrogen rich gas according to water gas shift reaction ,processing device and method using the catalyst

A carbon monoxide and catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve proton exchange membrane fuel cell damage, catalyst CO conversion rate decline, etc. question

Inactive Publication Date: 2007-07-18
MATSUSHITA ELECTRIC WORKS LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since hydrogen rich gas generated by the reaction between water vapor and hydrocarbon fuel or alcohol fuel such as methanol is used as the hydrogen source of the fuel cell power generation system, there is a problem that the proton exchange membrane fuel cell is Presence of impurities within hydrogen-rich gases are susceptible to damage
[0006] However, the problem is that the CO conversion rate of the catalyst in the water gas shift reaction drops rapidly at a reaction temperature of 250 °C or lower and a high space velocity, i.e., a large supply of hydrogen-rich gas.

Method used

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  • Catalyst for removing carbon monoxide in hydrogen rich gas according to water gas shift reaction ,processing device and method using the catalyst
  • Catalyst for removing carbon monoxide in hydrogen rich gas according to water gas shift reaction ,processing device and method using the catalyst
  • Catalyst for removing carbon monoxide in hydrogen rich gas according to water gas shift reaction ,processing device and method using the catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6 and comparative example 1

[0041] Using a calciner, rutile titanium dioxide (reference catalyst supplied by Catalysis Society of Japan) was calcined, wherein it was heated to a temperature of 500° C. within 1 hour under an air flow of 60 ml / min, and at this temperature The rutile-type titania carrier of Example 1 was prepared by keeping it at the lower temperature for 1 hour.

[0042] The required amount of the resulting rutile titania support was placed on an evaporating pan located in a hot water bath. Then add pure water to the carrier and mix them intimately. Next, ammonium perrhenate (NH 4 ReO 4 ) (manufactured by NACALAI TESQE INC.) in an aqueous solution was added to the evaporating tray. Pure water was further added to reach a predetermined concentration. By stirring the resulting mixture on the evaporating pan located in the hot water bath, the water trapped in the resulting mixture was evaporated, while the metal salt deposited on the evaporating pan wall was washed with pure water into th...

Embodiment 7

[0061] A required amount of rutile titanium dioxide prepared in the same manner as in Example 1 was placed on an evaporator located in a hot water bath. Then add pure water to the carrier and mix them intimately. Next, a nitric acid solution of dinitrodiamine-platinum(II) (manufactured by TANAKA KIKINZOKU KOGYOK.K.) was added to the evaporating tray. Pure water was further added to reach a predetermined concentration. By stirring the resulting mixture on the evaporating dish placed in a hot water bath, the water trapped in the resulting mixture was evaporated over 2 hours while washing the metal salts deposited on the evaporating dish wall into the bottom of the evaporating dish with pure water. After evaporation, the mixture is further dried at about 100° C. for at least 15 hours so that the platinum is supported on the rutile titanium dioxide.

[0062] Next, the carrier on which the desired amount of platinum was carried was placed on an evaporating tray located in a hot w...

Embodiment 8

[0064] A required amount of rutile titanium dioxide prepared in the same manner as in Example 1 was placed on an evaporator located in a hot water bath. Then add pure water to the carrier and mix them intimately. Next, dinitrodiamine-platinum(II) nitric acid solution (manufactured by TANAKA KIKINZOKU KOGYO K.K.) and ammonium perrhenate (NH 4 ReO 4 ) aqueous solution (manufactured by NACALAI TESQE INC.) was added to the evaporating tray. Pure water was further added to reach a predetermined concentration. By stirring the resulting mixture on the evaporating pan located in a hot water bath, the water trapped in the resulting mixture was evaporated while washing the metal salt deposited on the evaporating pan wall with pure water into the bottom of the evaporating pan. After evaporation, the mixture was further dried at about 100° C. for at least 12 hours in order to simultaneously support platinum and rhenium on the rutile titania. After evaporation, the mixture was dried, c...

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Abstract

A catalyst for removing carbon monoxide (CO) in a hydrogen rich gas according to a water gas shift reaction is provided, which is characterized in that platinum and rhenium are supported on rutile titania as a support. This catalyst provides a high CO conversion at a relatively low reaction temperature between 200 DEG C. and 300 DEG C. and is excellent in cost / performance due to a reduction in amount of supported platinum. It is preferred that a weight ratio of an amount of supported platinum to an amount of supported rhenium is in a range of 3:1 to 1:1, and particularly 3:2. In addition, when the catalyst is produced by supporting rhenium first and then platinum on the support, the catalyst performance can be remarkably improved.

Description

technical field [0001] The present invention relates to a catalyst for selectively removing carbon monoxide (CO) in a hydrogen-rich gas according to a water gas shift reaction, a device for treating a hydrogen-rich gas with the catalyst, and a process for removing hydrogen-rich gas using the catalyst method for removing CO from gas. Background technique [0002] In recent years, proton exchange membrane fuel cells have received widespread attention as the next generation fuel cell power generation system, and are expected to be applied to automobiles, small generators, household devices that use waste heat to generate electricity, etc. Its advantages are low operating temperature, high Power density, size and weight reductions, and accelerated start-up times. In a proton exchange membrane fuel cell, a perfluorosulfonic acid-based polymer membrane is used as a proton-conducting solid electrolyte (electrolyte), which can be operated at a temperature of 50°C to 100°C. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/656C01B3/48C01B3/58C01B3/16C01B3/40
CPCC01B3/16C01B2203/1064C01B2203/107B01J23/6567C01B2203/1082C01B2203/0283C01B2203/066Y02P20/52B01J23/656C01B3/58C01B3/48C01B3/40
Inventor 溝渕学绢川谦作桥本登五十岚哲饭田肇
Owner MATSUSHITA ELECTRIC WORKS LTD
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