Active composite catalyst for preparing hydrogen from steam, and preparation method of active composite catalyst

A composite catalyst and active technology, applied in chemical instruments and methods, physical/chemical process catalysts, hydrogen, etc., can solve the problems of real-time preparation and use hindering the development of hydrogen energy, and achieve simple methods, low degree of agglomeration °C, and resistance Strong oxidation effect

Inactive Publication Date: 2015-12-23
耿烽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the deterioration of the environment and the depletion of energy sources, hydrogen energy is attracting increasing attention as a clean energy source. However, the rapid production, safe storage and transportation of hydrogen energy, and the real-time preparation and use of hydrogen have become major problems hindering the development of hydrogen energy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] An active composite catalyst for steam hydrogen production and a preparation method thereof, comprising the following steps:

[0031] Fully mix 100-mesh spherical aluminum powder and metal tin powder according to a mass ratio of 9:1 and ball mill for 1-2 hours to obtain an Al-Sn alloy material;

[0032] Mix Al-Sn, MgCl, LiCl, CaO, NaCl into the ball mill and fully ball mill for 2-3 hours;

[0033] Add 20% anhydrous polyacrylamide to the metal powder after ball milling in the mixer;

[0034] Dry the bonded metal powder in a dry oven to obtain an active composite catalyst;

[0035] Put the active composite catalyst into a plastic bag and seal it in a metal bucket to prevent oxidation.

Embodiment 1

[0038] Table 1: Material Properties

[0039] Material chemical purity particles Aluminum Al 99.5% 100-120 mesh Metal tin Sn 99.5% 6-10mm calcium oxide CaO 99% 1-2mm Sodium chloride NaCl Analytical pure colorless crystal Anhydrous Magnesium Chloride MgCl 2 Analytical pure colorless crystal Anhydrous Lithium Chloride LiCl Analytical pure colorless crystal Anhydrous polyacrylamide Analytical pure

[0040] use equipment:

[0041] ①Planetary ball mill QM-SB type (500ml vacuum, stainless steel tank)

[0042] ②Electronic UX2200H, which can continuously collect data by computer

[0043] ③Hydrogen measuring instrument EST-1010H

[0044] ④Atomic absorption spectrometer WPE-120. Used for component analysis of hydrogen production composite materials

[0045] ⑤ Electronic multimeter Victor86B (attached with a thermocouple) is used to measure the hydrogen reaction temperature °C

[0046] ⑥Experimental beak...

Embodiment 2

[0055] Phase analysis of Al-Sn composite material:

[0056] Analyzed by X-ray diffractometer, test parameters are shown in Table 2.

[0057] Table 2: X-ray Diffraction Test Parameters of Al-Sn Composite Materials

[0058] Parameter Type parameter Parameter Type parameter starting angle 15° Scan speed °C 4° / s target type Copper target Ka wire scan range 10°-70° Tube voltage 40KV divergence slit DS=1 Tube current 100mAKm2 accept slit RS=0.3mm Step width 0.01 anti-scatter SS=1

[0059] At the same time, 4 vacuum tanks are ball milled, and the ball milling time is 0.5h-4h. The XRO spectrum can be detected as follows:

[0060] The presence of Al-Sn phase was detected by ball milling for 0.5h;

[0061] The Al-Sn phase increased by 20% was detected by ball milling for 1h;

[0062] Ball milling 2h detects that Al-Sn gradually decreases;

[0063] The existence of Al-Sn phase cannot be detected by ball milling fo...

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PUM

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Abstract

The invention relates to an active composite catalyst for preparing hydrogen from steam, and a preparation method of the active composite catalyst. The method comprises the following steps: fully mixing 100-mesh spherical aluminite powder and metallic tin powder at a mass ratio of 9 to 1, and carrying out ball milling for 1-2h to obtain an Al-Sn alloy material; mixing Al-Sn, MgCl, LiCl, CaO, and NaCl in a ball milling machine, and carrying out full ball milling for 2-3h; putting metal poser subjected to ball milling in a stirring machine, and adding 20% anhydrous polyacrylamide for bonding; stoving bonded metal powder in a dry stoving box to obtain an active composite catalyst; and putting the active composite catalyst in a rubber bag for sealing, and carrying out sealing storage in a metal barrel for preventing oxidation. The method disclosed by the invention is low in cost and low in energy consumption. The prepared active composite catalyst is prepared by steam catalyzing having the temperature of 100 DEG C or more, the induction period is short, i.e., the normal hydrogen releasing period can be entered after 300s, the hydrogen preparation yield can be up to 95%, the hydrogen output amount is up to 1400ml/min/g, the active composite catalyst can be repeatedly processed for use, and is high in utilization rate, long in hydrogen production time, capable of completely meeting industrial manufacture requirements, and especially suitable for production and use in industrial boilers.

Description

technical field [0001] The invention relates to a catalyst for hydrogen production, in particular to an active composite catalyst for steam hydrogen production and a preparation method. Background technique [0002] With the deterioration of the environment and the depletion of energy sources, hydrogen energy is attracting increasing attention as a clean energy source. However, the rapid production, safe storage and transportation of hydrogen energy, and the real-time preparation and use of hydrogen have become major problems hindering the development of hydrogen energy. [0003] The gas density of hydrogen is only 1 / 13 of that of air, and it is extremely difficult to dissolve in water. The density of hydrogen is 0.0899g / L under normal conditions. Hydrogen has strong reducibility at a certain temperature. When the reaction temperature is below 1800K, some The reducing order of the reducing agent is: Ca>Mg>Al>CaC 2 >Si>C>H 2 >CO, the reducibility of hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/138B01J35/02C01B3/10
CPCY02E60/36
Inventor 耿烽
Owner 耿烽
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