I think this may be due not only to external factors, such as poisoning of the catalyst, etc., but also to internal factors, such as metallurgical sintering, etc., and I have surveyed by means of ...

Catalyst 2013 Supplement Optimize feed treatment for polypropylene process To realize full activity from polymerization catalysts, feed streams need to be as clean as possible from all contaminants ...

"Sulfur oxides, such as SO 2, poison the catalyst by binding to the surface. This leaves fewer sites for CO 2 to react, and it also causes the formation of chemicals you don't want. "It happens ...