Mesoporous Y Zeolite Catalyst For sale introduces the preparation method of catalyst
Author:
Source:
How much do you know about the preparation method of catalyst? Let's follow the editor of Mesoporous Y Zeolite Catalyst For sale 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 manufacture of meta-xylene fluidized bed ammoxidation to meta-dicarbonitrile catalyst, firstly, the metavanadate and chromium salt aqueous solution of given concentration and volume are fully mixed, and then mixed with quantitative new 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. 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 catalysts, 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.
3. Fibrosis. For the manufacture of precious metal-containing supported catalysts. For example, borosilicate is drawn into glass fiber filaments, corroded with concentrated hydrochloric acid solution, and becomes a porous glass fiber carrier, which is then impregnated with chloroplatinic acid solution to carry platinum components. Depending on the practical situation, the fiber catalyst can be compressed into various shapes and required tightness, such as the catalyst used in the oxidation of automobile exhaust gas, which can be compressed into a short round tube. Carbon fiber can also be used if it is not an oxidation process. The manufacturing process of the fiber catalyst is complicated and the cost is high.
The above is the editor of Mesoporous Y Zeolite Catalyst For sale: a brief introduction to the knowledge of catalyst preparation methods.
Previous Page:
Related News
Tengmao Technology
E-mail: sales@tmrct.cn
Telephone: +863595069168
Address: Hejin City, Shanxi Province, aluminum-based new materials demonstration park
