Catalytic Steam-Reforming of Glycerol over LDHs-Derived Ni-Al Nanosheet Array Catalysts for Stable Hydrogen Production

In the present work, LDHs–derived Ni–Al nanosheet arrays (NiAl/NA) were successfully synthesized via a one–step hydrothermal method, and applied in steam-reforming of glycerol reaction for enhanced stable hydrogen production. The physicochemical properties catalysts characterized using various techniques, including XRD, SEM–EDS, XPS, N2–physisorption, Raman, TG–DTG. results indicate that smooth cross–linked mixed metal oxide nanosheets orderly perpendicularly grown on Ni foam substrate. SEM line scan characterization reveals concentration gradient from bottom to top nanosheet, which leads distinctly optimized valence states an binding strength oxygen species. Owing improved reducibility more exposed active sites afforded by its array structures, NiAl/NA catalyst shows conversion (83.1%) higher H2 yield (85.4%), as well longer stability (1000 min), compared traditional powder. According spent density functional theory (DFT) calculations, coke deposition is effectively suppressed construction, with only 1.25 wt.% amorphous carbons formed CO disproportionation.