What is vexcalibur catalyst?

As an AI language model, I do not have access to specific information about "vexcalibur catalyst", but given the context, I assume that you are referring to a product or material used in science or technology.

Without further context or information, it is difficult to provide an accurate description of vexcalibur catalyst. However, generally, a catalyst is a substance that affects the rate of a chemical reaction without being consumed or changed itself during the reaction. It lowers the required activation energy, providing an alternative reaction pathway to accelerate the reaction.

Vexcalibur may be a brand or trade name, and the catalyst may have specific properties and applications depending on its composition and intended use. It could be used in various industries such as chemical, petroleum, and environmental industry. Additional information on vexcalibur catalyst would require more specific context and details.