Application of a Methane Reforming Catalyst in Molten Carbonate Fuel Cell

A technology for molten carbonate and reforming catalysts, applied in physical/chemical process catalysts, battery electrodes, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of unexplained catalyst activity evaluation and high operating temperature , to achieve good anti-alkali poisoning ability, high catalytic performance and low cost

Inactive Publication Date: 2011-12-28
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The methane conversion rate of this catalyst is above 96% at 750°C, but this method does not specify the conditions of the water-to-carbon ratio for catalyst activity evaluation, and the operating temperature is also relatively high

Method used

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  • Application of a Methane Reforming Catalyst in Molten Carbonate Fuel Cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 19.7% Ni catalyst, the preparation method is as follows:

[0041] Weigh 6.0g of Ni (NO 3 ) 2 ·6H 2 O, dissolve it in 2ml deionized water, after the nitrate is completely dissolved, add 5.0g Al 2 O 3 The carrier is impregnated with Ni(NO 3 ) 2In the solution, after the solution was completely adsorbed on the carrier, the carrier with nitrate was placed in an 80°C incubator to dry for 5h. dried Al 2 O 3 Put it into a muffle furnace for calcination, calcined at 450 ℃ for 3 hours, and calcined at a high temperature of 650 ℃ for 3 hours.

[0042] 1.0 g of the catalyst was weighed into a fixed-bed quartz tube reactor for activity evaluation. The inner diameter of the quartz tube is 10mm and the height is 800mm. The reactor was fed with a mixture of hydrogen and nitrogen (molar ratio of 3:7) at a heating rate of 3 °C / min to 650 °C, continued reduction at 650 °C for 5 h, and then the mixture of hydrogen and nitrogen was switched to methane and water. When evaluated w...

Embodiment 2

[0044] 25% Ni catalyst, the preparation method is as follows:

[0045] Weigh 8.2g Ni (NO 3 ) 2 ·6H 2 O, dissolve it in 2.5 ml of deionized water, and the subsequent steps are the same as in Example 1.

[0046] The catalyst was evaluated for activity in a quartz tube. At 650℃, when S / C=2, the methane conversion rate reaches 73.8%.

Embodiment 3

[0048] 3%Ce+17.7%Ni catalyst by sub-impregnation method, the preparation method is as follows:

[0049] Weigh 0.56g Ce (NO 3 ) 3 ·6H 2 O Prepare 3% Ce catalyst according to the method of Example 1. Then weigh 5.3g Ni (NO 3 ) 2 ·6H 2 O, dissolve it in an appropriate amount of deionized water, and immerse the prepared 3% Ce catalyst in a nickel nitrate solution, and the subsequent steps are the same as those in Example 1. A catalyst impregnated with Ce first and then with Ni was obtained.

[0050] The catalyst was evaluated for activity in a quartz tube. At 650°C, when S / C=2, the methane conversion rate was 73.9%, and the hydrogen yield was 74.8%.

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Abstract

The invention discloses the application of a methane reforming catalyst in a molten carbonate fuel cell. The catalyst comprises an active component nickel with a content of 4-25 wt%, a rare earth element catalytic promoter with a content of 0-10 wt%, Alumina carrier with a content of 65-96 wt%. The preparation method of the catalyst is simple, can be operated under the conditions of medium temperature and low water-to-carbon ratio, has high reactivity, strong carbon deposition resistance and stability.

Description

technical field [0001] The present invention relates to a reforming catalyst for molten carbonate fuel cells (MCFC), in particular to the application of a methane reforming catalyst in molten carbonate fuel cells. Background technique [0002] A fuel cell is a power generation device that converts chemical energy in fuel and oxidant directly into electrical energy. It does not go through the heat engine process, so it is not limited by the Carnot cycle, and the energy conversion efficiency is high. At the same time, it is a clean and pollution-free power generation device. Among them, molten carbonate fuel cell (MCFC) is a power generation device that operates at a high temperature of 600-700 °C. In addition to the above characteristics, it also has many unparalleled advantages of other fuel cells. If it does not need to use precious metal electrodes, it can greatly reduce battery costs. ; There is a wide range of fuel applications, in addition to hydrogen and carbon monox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B01J23/83
CPCY02E60/50
Inventor 周利李广龙王鹏杰王英旭邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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