Technical Note: Surface Domain Contrast and Phase-Stability Experiments for Tungsten Carbide Catalysts (β-W2C) in RWGS and Polymer Hydrocracking

This technical note offers experimental ideas and measurement suggestions inspired by recent work on phase-controlled tungsten carbide catalysts (including β-W2C) for CO2 conversion and polyolefin hydrocracking, including PVC-tolerant feeds. The focus is on practical, testable hypotheses to improve phase stability, interpret volcano trends via surface composition descriptors, and de-risk scale-up by explicitly separating transport limits from intrinsic kinetics. This note is provided as an open contribution for the authors and broader catalysis community.