Research progress in ceramic additive manufacturing technology in field of catalyst carriers

Ceramic additive manufacturing technology， through high-precision structural design and multi-material integrated molding， provides a new approach for the field of catalysis， ranging from carrier customization to precise regulation of active sites. Catalyst carriers prepared based on ceramic additive manufacturing technology feature higher mass transfer efficiency， freely formed geometric shapes， and excellent thermal stability， demonstrating significant potential in reducing production costs and advancing green energy initiatives. This review systematically examines four principal additive manufacturing technologies applied to ceramic catalyst carriers： direct ink writing， stereolithography， digital light processing， and fused deposition modeling. The review summarizes four major kinds of ceramics applied as catalyst carriers， and outlines the current research landscape of additive manufacturing in fabricating diverse ceramic catalyst carriers， with a focused analysis on their applications in automotive exhaust purification， denitrification processes， chemical synthesis， solid oxide fuel cells， and solar thermochemical cycle reactions. Finally， the key challenges and future development directions of additively manufactured ceramic catalyst supports are discussed. Future research should focus on the development of novel multifunctional ceramic material systems， the synergistic design of high-precision and multiscale architectures， the coupled regulation of active sites and mass transfer behavior， as well as green， low-energy fabrication and post-processing strategies， to promote the large-scale application of additively manufactured ceramic catalyst supports in energy conversion and environmental catalysis.