Method for protecting reforming catalyst of molten carbonate fuel cell and applications thereof

A reforming catalyst, molten carbonate technology, applied in molten electrolyte fuel cells, fuel cells, catalyst protection and other directions, can solve the problems of short running time, poor repeatability, poor alkali resistance effect, etc., to improve the running time , the effect of prolonging the operating life

Inactive Publication Date: 2009-09-23
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

P. Heidebrecht et al. (P. Heidebrecht, et al, Ind. Eng. Chem. Res., 2005, 44: 3527-3528) adopted a cross-flow MCFC model to balance the absorption of reforming reactions by optimizing the spatial distribution density of reforming catalysts. Thermal and electrochemical exothermic effects, to achieve the purpose of affecting and controlling the volatilization and diffusion speed of alkali gas, and inhibit alkalosis to a certain extent, but this method of optimizing system operating conditions has poor alkali resistance effect, short running time, and repeatable poor sex

Method used

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  • Method for protecting reforming catalyst of molten carbonate fuel cell and applications thereof
  • Method for protecting reforming catalyst of molten carbonate fuel cell and applications thereof
  • Method for protecting reforming catalyst of molten carbonate fuel cell and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: the preparation of core-shell type catalyst

[0029] Carrier pretreatment: porous γ-Al with a particle size of 3 mm 2 o 3 The carrier was washed with deionized water several times, ultrasonically oscillated, and dried at 100°C for later use.

[0030] Preparation of nickel-based catalyst by impregnation method: Quantitative γ-Al 2 o 3 The carrier is impregnated with 5-10wt% Ni(NO 3 ) 2 ·6H 2 O aqueous solution, fully stirred, dried at 80°C, and burned in a muffle furnace at 650°C with a heating rate of 5K / min.

[0031] Preparation of Sil-1 zeolite seeds and their covalent coupling to supports: according to TPAOH:SiO 2 :H 2 O=30:90:2800 molar ratio to prepare Sil-1 zeolite seed crystal precursor solution, wherein tetraethyl orthosilicate (TEOS) is the silicon source, tetrapropyl ammonium hydroxide (TPAOH) is the organic template, after fully mixing Stir at room temperature for 24 hours, pour into a stainless steel crystallization kettle with PTFE li...

Embodiment 2

[0034] Embodiment 2: test of reforming reaction containing alkali outside the pool

[0035] The purpose of this test is to test the alkali poisoning resistance of the core-shell catalyst. The reactor adopts a stainless steel tube with an inner diameter of 6mm and a length of 400mm. The type catalyst is placed on the packing layer, and quartz wool is placed between the catalyst and the packing layer, so that the catalyst layer is in the constant temperature zone of the heating furnace, and 62mol% Li 2 CO 3 and 38 mol% K 2 CO 3 The 20%wt inert filler layer impregnated with alkali is placed on the catalyst bed; before the reaction, the system feeds 20ml / min of hydrogen to carry out catalyst reduction for 4h, press H 2 O / CH 4 Ratio 3:1 from the upper port of the reactor, the reaction temperature was controlled at 650°C, and gas chromatography (GC7890, TCD detector) was used to detect H 2 , CO, CO 2 and CH 4 Component content.

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Abstract

The invention discloses a method for protecting reforming catalyst of molten carbonate fuel cell and applications thereof. The method comprises the steps of: impregnating alumina supporter into nickel solution to obtain reforming catalyst; igniting the reforming catalyst after drying; proportioning according to regulated mol ratio: preparing Sil-1 catalyst through hydro-thermal synthesis and covalently coupling the Sil-1 catalyst with aminopropylsilane; placing couple carrier into Sil-1 inoculating crystal dispersion liquid; impregnating Sil-1 mol sieve catalyst into the Sil-1 inoculating crystal dispersion liquid; crystallizing Ni-Al2 of coupled inoculating crystal through hydro-thermal synthesis into film to generate core-shell reforming catalyst; and igniting the core-shell reforming catalyst to remove template agent TPAOH. The prepared core-shell style reforming catalyst can be directly applied to internal-reforming molten carbonate fuel cell or other similar catalytic reactions which are apt to cause contamination and poisoning so as to prolong service life of catalyst and enhance service life of cells; and the core-shell style reforming catalyst can be easily and conveniently arranged in cells.

Description

technical field [0001] The invention belongs to the field of new energy and inorganic membrane applications, and relates to a method for protecting a reforming catalyst of a molten carbonate fuel cell and its application. Background technique [0002] With the development of economy and society, the oil crisis and environmental pollution have brought great challenges to the survival of human beings. Seeking clean resources and realizing sustainable development has become one of the most concerned and urgent problems in the world. Hydrogen energy is regarded as the future energy of mankind, and fuel cells are the best way to utilize hydrogen energy. Hydrogen energy and fuel cells are one of the hottest topics in current technology. [0003] Molten carbonate fuel cell (MCFC) is a high-temperature fuel cell with an operating temperature of 650 °C, and the electrolyte is usually a mixture of lithium carbonate and potassium carbonate (62mol% Li 2 CO 3 and 38 mol% K 2 CO 3 ), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J33/00B01J23/755B01J21/04B01J29/06H01M8/22H01M8/14
CPCY02E60/526Y02E60/50
Inventor 张雄福周敬林张健刘海鸥
Owner DALIAN UNIV OF TECH
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