quality Mesoporous Y Zeolite Catalyst

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How much do you know about the preparation method of catalyst? Let's follow the editor of quality Mesoporous Y Zeolite Catalyst for a brief understanding!
1. Spray evaporation method
It is used to make catalysts for fluidized beds with particle diameters ranging from tens of microns to hundreds of microns. For example, in the production of meta-xylene fluidized bed ammoxidation to meta-dicarbonitrile catalyst, firstly, a given concentration and volume of metavanadate and chromium salt aqueous solution are fully mixed, and then mixed with quantitatively freshly prepared silica gel, pumped into In the spray dryer, after being atomized by the nozzle, the water evaporates to dryness under the action of the hot air flow, and the material forms a microsphere catalyst, which is continuously drawn out from the bottom of the spray dryer.
2. Hot melt method
The hot-melting method is a special method for preparing certain catalysts, which is suitable for a small number of catalysts that have to go through the smelting process. The purpose is to smelt the components under high temperature conditions and call it a uniformly distributed mixture. With the necessary subsequent processing, it can be obtained. Excellent catalyst.
3. Immersion method
From the multi-component system, a suitable liquid agent (or water) is used to extract part of the material to make a catalyst with a porous structure. For example, in the manufacture of skeleton nickel catalyst, a certain amount of nickel and aluminum are melted in an electric furnace, and the molten material is cooled to form an alloy. The alloy is broken into small particles, soaked in sodium hydroxide aqueous solution, and most of the aluminum is dissolved (to generate sodium metaaluminate). ), i.e. the formation of a porous highly active framework nickel.
The above is the editor of quality Mesoporous Y Zeolite Catalyst:A brief introduction to the knowledge about the preparation method of the catalyst.