The Digest’s 2025 Multi-Slide Guide to Biodiesel Poisoning of Close-Coupled SCR

This research addresses how CC-SCR systems are vulnerable to metal poisoning (Na, K, Ca, Mg) from high-level biodiesel blends. The core technology is utilizing Spaci-MS (Spatial activity/storage mapping) alongside systematic B100-fueled engine aging to link distributed catalyst degradation to specific metal gradients. Key progress includes acquiring the 125 kW genset, establishing fuel infrastructure plans, and performing initial Spaci-MS evaluations on Vanadia-based SCRs (V-SCRs).