【Q&A Question 060】June 19, 2016
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【Q&A Question 060】June 19, 2016: How to evaluate the activity of a catalyst? The answer key will be available after responding; scoring is based on addressing the key points. The high activity of a good catalyst is manifested in fast reaction rates, high production efficiency, small reactor volume, low catalyst usage, high space velocity, mild operating conditions, and low operating temperatures.
The desulfurization capacity at the same temperature and pressure is determined by the bed pressure drop
Reaction temperature, reaction space velocity, feed rate, product conditions
Conversion rate. Selectivity is another indicator.
The evaluation of catalyst activity can be divided into qualitative evaluation and quantitative evaluation. Qualitative evaluation is mainly used to understand the general situation of a catalyst in terms of certain parameters, such as the basic trend of those parameters or the approximate range of their values; it is a rough method of assessment ； Quantitative evaluation aims to determine the exact value of a parameter as well as its level of precision, and such situations often require sophisticated evaluation methods. Furthermore, the evaluation methods for catalysts can also be classified based on the source of the samples, such as into evaluation methods for industrial samples and those for laboratory samples.
Product yield, light oil yield, gas yield, coking tendency
Activity, selectivity, lifespan, mechanical strength
Amount of catalyst required to achieve the same reaction rate