Iso-Potential Operando Microwave Cavity Perturbation–Spatial Conductivity Changes of a Cu/ZnO/Al 2 O 3 Catalyst Inside a Fixed-Bed Reactor During Reverse Watergas Shift Reaction
Abstract
High Resolution Image Download MS PowerPoint Slide This work explores the combination of Microwave Cavity Perturbation (MCP) with the concept of Iso-Potential Operando Spectroscopy (IPOS) to develop IPO-MCP for measuring conductivity changes in a catalyst within a catalytic fixed-bed reactor (FBR). As proof-of-concept, spatially resolved dielectric properties, species, and temperature profiles were recorded during the reverse water–gas shift (rWGS) reaction on a commercial copper–zinc-alumina (CZA) catalyst. These results reveal a linear electronic structure–activity relationship along the catalyst packing demonstrating that hydrogen significantly enhances the Q-value compared to carbon dioxide in line with previous investigations. This research motivates further application of IPO-MCP to other catalytic systems with distinct conductivity changes.
Fields of Study & Subjects
Catalysts for Methane Reforming
Ammonia Synthesis and Nitrogen Reduction
Microwave-Assisted Synthesis and Applications
Publication details
- Journal / source
- Industrial & Engineering Chemistry Research
- Publisher
- American Chemical Society (ACS)
- Volume
- 65
- Issue
- 26
- Pages
- 13645–13654
- Publication date
- 25 June 2026
- Language
- EN