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

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...

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.