Preparation method of ordered porous zinc aluminum composite desulfurizer
A desulfurizer, zinc-aluminum technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of low sulfur capacity and poor desulfurization activity, and achieve orderly arrangement of pores, accurate and detailed process parameters, Good desulfurization effect
Inactive Publication Date: 2016-12-14
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0002] The deep desulfurization of raw material gas for hydrogen supply is a key technical link that must be solved by fuel cells. The application environment of fuel cells is different, and the requirements for deep desulfurization process under normal temperature conditions are getting higher and higher; due to the strong bond between metal and sulfur The metal oxide chemical absorption method is a very effective and widely used desulfurization method; the reaction between zinc oxide and hydrogen sulfide has a good thermodynamic advantage, so it has high desulfurization accuracy at room temperature, but the desulfurization activity is very poor. The existing metal oxide desulfurization technology at room temperature generally has the problem of low sulfur capacity. Improving the specific surface area and dispersion of zinc oxide is an effective means to increase the sulfur capacity
[0003] At present, supported zinc oxide low-temperature desulfurizers are widely studied, mainly because of the large specific surface area and nano-sized zinc oxide grains after loading; Gao; research by Davidson and Ilaria Rosso et al. showed that the internal mass transfer resistance at low temperature is also the main factor limiting the reaction rate of zinc oxide and hydrogen sulfide
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[0072] The present invention will be further described below in conjunction with accompanying drawing:
[0073] figure 1 As shown, in order to prepare the state diagram of polymethyl methacrylate microspheres, the position and connection relationship of each part must be correct, and the operation should be performed in accordance with the ratio and sequence.
[0074] Quantities of chemicals used in preparation are determined in pre-set ranges in grams, milliliters, centimeters 3 is the unit of measurement.
[0075] The preparation of polymethyl methacrylate microspheres is carried out in a four-necked flask, and is completed under water bath heating, water circulation condensation, and argon protection; the water bath 1 is rectangular, and the lower part of the water bath 1 is an electric heater 2, The upper part of the water bathtub 1 is a four-necked flask 3, which is fixed by a fixed frame 12; the four-necked flask 3 is provided with a first argon tube 4, a liquid additi...
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Abstract
The invention relates to a preparation method of an ordered porous zinc aluminum composite desulfurizer, and aims at the low sulfur capacity of a load-type zinc oxide desulfurizer. The method is as below: using zinc nitrate and aluminum nitrate as raw materials, preparing a polymethyl methacrylate microspheres colloidal crystal template, then assembling the colloidal crystal template, roasting by vacuum microwave to prepare the ordered porous zinc aluminum composite desulfurizer. The preparation method has advanced technology, and detailed accurate process parameters; the purity of the product reaches 99.2%; the ordered porous porous zinc aluminum composite desulfurizer is crystal particles with particle size of no higher than 120nm, has ordered hole type arrangement, good desulfurization effect increased by 3.6 times compared to the existing desulfurizer. The preparation method of the ordered porous zinc aluminum composite desulfurizer is advanced.
Description
technical field [0001] The invention relates to a preparation method of an ordered porous zinc-aluminum composite desulfurizer, belonging to the technical field of preparation and application of porous composite desulfurizers. Background technique [0002] The deep desulfurization of raw material gas for hydrogen supply is a key technical link that must be solved by fuel cells. The application environment of fuel cells is different, and the requirements for deep desulfurization process under normal temperature conditions are getting higher and higher; due to the strong bond between metal and sulfur The metal oxide chemical absorption method is a very effective and widely used desulfurization method; the reaction between zinc oxide and hydrogen sulfide has a good thermodynamic advantage, so it has high desulfurization accuracy at room temperature, but the desulfurization activity is very poor. The existing desulfurization technology of metal oxides at room temperature general...
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IPC IPC(8): B01D53/81B01D53/48
CPCB01D53/48B01D53/81B01D2258/0208
Inventor 樊惠玲杨超郭红生王龙江寇佳伟梁丽彤沈芳上官炬米杰苗茂谦
Owner TAIYUAN UNIV OF TECH