SOHIOprosessi

SOHIOprosessi refers to a chemical process developed by the Standard Oil of Ohio (SOHIO), now a part of BP. This process is primarily known for the catalytic oxidation of propylene to acrylonitrile. Acrylonitrile is a crucial intermediate chemical used in the production of acrylic fibers, plastics like ABS (acrylonitrile butadiene styrene), and synthetic rubber.

The SOHIO process, also known as ammoxidation, involves reacting propylene, ammonia, and air (oxygen) over a catalyst. The original catalyst was a bismuth molybdate-based system, but advancements have led to more sophisticated catalysts, often containing promoters to enhance selectivity and yield. The reaction typically takes place in a fluid-bed reactor at elevated temperatures and pressures.

This process revolutionized acrylonitrile production by offering a more efficient and cost-effective method compared to previous routes. Its development in the 1960s marked a significant advancement in industrial catalysis and organic synthesis. The SOHIO process remains the dominant method for acrylonitrile production globally. It is characterized by its high conversion rates and selectivity for the desired product. Environmental considerations, such as managing byproducts and emissions, have also been a focus of ongoing research and development related to the process.