What is the stability of reforming catalyst？

The stability of the catalyst refers to the ability of the catalyst to maintain activity and selectivity under actual production conditions. The decrease of activity and selectivity is mainly related to the properties of raw materials, operating conditions, properties of catalytic production agents and use methods.

For the reforming catalyst, it is required to have good activity and stability (that is, the average reaction at the end of operation and the beginning of operation is required)

The difference between the temperature is small), and it requires good selectivity and stability (that is, the difference between the selectivity of the catalyst at the early stage of operation and the selectivity of the catalyst at the end of operation is small).

For the semi-regenerative fixed bed reforming catalyst, the stability requirements are small coke generation rate and strong capacity to hold carbon deposits. For the moving bed continuous reforming catalyst, the main requirement of the catalyst is good thermal stability, so that it can withstand repeated regeneration under high temperature conditions.

In order to pursue higher economic benefits, the fixed bed is also moving towards the goal of high temperature, low pressure and low hydrogen oil ratio, and only the catalyst with high stability can meet the requirements of the catalyst life of more than 3 years of operation cycle.