【Daily Question】Hydrogenation Sector 2016 02 23
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【Daily Question】Hydrogenation Section 2016-02-23: What are the components of a hydrocracking catalyst? Main active component (metal component), carrier, additive.
Composition of active ingredients, additives, and carriers~~~~~~~~~~~~~~~~~
What components does a hydrocracking catalyst consist of? The active components of hydrofining catalysts are the main source of their hydrofining activity. Among those that are not precious metals, there are several metal oxides and sulfides from groups VIB and VIII; among them, W, Mo, Co, and Ni exhibit the best activity ； Precious metals include Pt, Pd, etc. The hydrogenation activity of a catalyst is closely related to the chemical properties of its elements. A necessary condition for the hydrogenation reaction is that the reactants adsorb on the catalyst surface at an appropriate rate; weak bonds are formed between the adsorbed molecules and the catalyst surface before they react and desorb. This requires the catalyst to have good adsorption properties. The adsorption properties of catalysts are related to their geometric and electronic properties. The electronic properties of the catalyst determine the strength of the bonds between the reactants and the atoms on the catalyst surface. Studies show that increasing the content of active components is beneficial for enhancing activity. However, considering the overall production cost and the increase in activity, there should be an optimal range for the content of the active component. Currently, the content of active components in hydrogenation refining catalysts is generally between 15% and 35%. In industrial catalysts, different active components are often used in combination. For example, cobalt molybdate catalysts contain molybdenum and cobalt, while nickel aluminate catalysts contain molybdenum and nickel, etc. Within the same catalyst, there is an optimal ratio range among different active components.
What components does a hydrocracking catalyst consist of? A hydrocracking catalyst is composed of an active component, additives, and a carrier.
Main active component (metal component), carrier, additive.
Main active component (metal component), carrier, additive.
I am asking about the main components of the catalyst, not the composition of the active components in the hydrorefining catalyst. Please read the question carefully, Lu Zhu.
What components does a hydrocracking catalyst consist of? A hydrocracking catalyst is composed of an active component, additives, and a carrier.
Hydrocracking catalysts are bifunctional catalysts, meaning they consist of metal active components that possess both hydrogenation and dehydrogenation functions, as well as an acidic support that provides cracking capabilities. Depending on the different raw materials and product requirements, it is necessary to appropriately select and match these two functions.