How to choose ctalyst carrier

The activity of the catalyst increases with the increase of the specific surface of the carrier. In order to obtain higher activity, the active components are often supported on the carrier with a large specific surface.

The carrier is related to the activity, selectivity, thermal stability, mechanical strength and transfer characteristics of the catalytic process of the catalyst. Therefore, when screening and manufacturing excellent catalysts, it is necessary to clarify the physical properties of the carrier and its function.

Representation method of catalyst components and content: For example: synthetic ammonia catalyst Fe-K2O-Al2O3 Separate the components in the catalyst with "-': hydrodesulfurization catalyst Co-Mo/α-Al2O3, the main agent is on the slash. and auxiliary agent, the carrier is under the oblique line. The content of each component can be expressed by weight % and weight ratio, and can also be expressed by atomic % and atomic ratio.

The function of the catalyst carrier:

1.Provide effective surface and suitable pore structure

2.Enhance the mechanical strength of the catalyst

3.Improve the conductivity of the catalyst

4.Reduce the content of active ingredients

5.Vector provides additional active center

6.Flooding phenomenon and strong interaction between active component and carrier

Characteristics of An Ideal Catalyst Carrier：

1.Adapting to the shapes of a specific reaction;

2.Sufficient crushing strength;

3.Sufficient reactive surface and suitable pore structure;

4.Sufficient stability, including active stability and thermal stability;

5.Moderate thermal conductivity, heat capacity and bulk density;

6.Does not contain substances of poison the catalyst;

7.The raw materials are readily available, and the carrier preparation process is simple.