Phosphoric acid 73%
: Hydroprocessing Catalyst Preparation: Phosphoric acid is used in the preparation of catalysts for hydroprocessing in refineries. These catalysts are crucial for refining processes such as hydrotreating and hydrocracking, which are designed to improve the quality of products like gasoline, diesel, and kerosene by removing impurities like sulfur and nitrogen compounds.
Desulfurization: Phosphoric acid is also used to treat raw petroleum to remove sulfur compounds in a process called "sweetening. " This reduces the sulfur content of refined products, which is vital for meeting environmental regulations.