Catalysis 2025 Issue

at low pressure (35 barg) and high LHSV to produce ULSD and jet fuel. Sourced from Evonik’s inventory, an Excel reju- venated CoMo catalyst (KF-757) was used, with technical projections in line with the refinery’s performance objec - tives. A full reactor solution was provided. As Figure 2 shows, Excel rejuvenated catalysts provided excellent stability and a low deactivation rate over the course of the cycle, meeting expectations with equivalent performance to the previous cycle. The refinery also ben - efited from lower Scope 3 emissions and reduced waste. Conclusion Performance does not have to be sacrificed in the pursuit of reduced emissions. Catalyst rejuvenation technology can support businesses in minimising waste and reducing emissions while maintaining stable and equivalent perfor- mance to fresh catalysts. Additionally, externally certified Life Cycle Assessments provide avoided emissions calculations. In the instance of Excel rejuvenated catalysts, it has been found that their use results in a 60% reduction in CO₂eq/per kg of catalyst Global Warming Potential (GWP) emissions compared to fresh catalysts. It is also crucial to note the cost savings Excel rejuvenation technology presents: between 30-50% savings when pur- chased directly from Evonik’s inventory and up to 50-70% savings when refining organisations reuse catalysts within their own systems.

710

Deactivation = 1.7 ˚F/month

690

670

650

Norm WABT

630

Days on stream

A comprehensive solution for companies aiming to optimise performance, Excel rejuvenation technology allows for a greener, more circular approach to catalyst management. Figure 2 Demonstrated stable performance and low deacti- vation from the Excel rejuvenated catalyst

Excel, CatGuard, and Durocel are marks of Evonik.

Jignesh Fifadara and Madeline Green Evonik Contact: jignesh.fifadara@evonik.com madeline.green@evonik.com

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Catalysis 2025