What is the role of hydrogen partial pressure in controlling the reaction pathways and product distribution in a hydrocracking unit?

Hydrogen partial pressure plays a vital role in controlling the reaction pathways and product distribution in a hydrocracking unit. Hydrocracking is a process that uses hydrogen and a catalyst to break down large hydrocarbon molecules into smaller, more valuable ones, such as jet fuel, diesel, and naphtha. The hydrogen partial pressure, which is the pressure exerted by hydrogen gas in the reactor, influences the rate and selectivity of several key reactions. Higher hydrogen partial pressure promotes hydrogenation reactions. Hydrogenation involves the addition of hydrogen atoms to hydrocarbon molecules, saturating double bonds and preventing the formation of coke, a carbon-rich solid that deactivates the catalyst. By maintaining a high hydrogen partial pressure....