Preparation method of coal-based carbon fiber loaded palladium catalyst

Abstract

The invention provides a preparation method of a coal-based carbon fiber loaded palladium catalyst. The method comprises the following steps: firstly adopting coal as a carbon source, pre-oxidizing the coal to obtain oxidized coal, preparing the oxidized coal and polyacrylonitrile to obtain a spinning solution of certain concentration, preparing a carbon fiber precursor by controlling parameters such as voltage, an injection speed of the spinning solution, a receiving distance and the like by utilizing an electrostatic spinning method, performing carbonization, and preparing coal-based carbonfibers with a uniform size; and preparing the coal-basesd carbon fiber loaded palladium catalyst under the condition that palladium chloride is used as a palladium source and ethylene glycol as a reduction agent. The coal-based carbon fiber loaded palladium catalyst prepared by the preparation method has good formic acid oxidation electric catalytic performance. The coal resource with rich storageamount is used as a carbon source, and the prepared high-performance carbon fiber composite material not only has potential application prospect in the aspect of fuel cells, but also realizes the high additional value of the coal; and therefore, the important actual significance is realized.

Description

technical field [0001] The invention relates to a preparation method of a coal-based carbon fiber supported palladium catalyst. Background technique [0002] As countries all over the world attach great importance to the energy crisis and environmental pollution, the development of new and efficient clean energy has become one of the hot spots in international research and development. Fuel cell is currently recognized as an efficient and clean energy device with many advantages, such as high efficiency, environmental protection and pollution-free, convenient fuel source, etc. It is called the green energy of the 21st century. In recent years, research on direct formic acid fuel cells (DFAFC) using formic acid instead of methanol as fuel has attracted much attention. DFAFC has many advantages, such as formic acid is non-toxic, non-flammable, safe and convenient for storage and transportation. Although DFAFC has many advantages, its commonly used noble metal Pd-based cataly...

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Problems solved by technology

Although DFAFC has many advantages, its commonly used noble metal Pd-based catalyst still has disadvantages such as high price and poor electrocatalytic stability for formic acid oxidation. Therefore, how to reduce the amount of Pd, improve the catalytic efficiency of Pd, and obtain a stable Pd-based catalyst is A VERY IMPORTANT QUESTION FOR DFAFC DEVELOPMENT

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