Copper catalysts for H2 production via CH4 decomposition

Cu/γ-Al2O3 catalysts with different copper content prepared by wet impregnation have been studied for the thermo-catalytic decomposition (TCD) of methane in the temperature range 800–1000 °C. The materials have been characterized using ICP-MS, X-ray diffraction (XRD) and BET analysis. Their redox and catalytic behaviour has been investigated using H2 and CH4 temperature programmed reduction (TPR), FT-IR, TGA under reaction mixture and isothermal tests in a fixed bed reactor. The nature of the active phase and the best catalyst composition have been determined by comparison with reference compounds containing copper oxide and copper aluminate, respectively. Finally, the applicability of catalysts in a fluidized bed has been analyzed.

Graphical abstractCu/γ-Al2O3 catalysts were studied for the thermo-catalytic decomposition of methane at 800–1000 °C. They were characterized using ICP-MS, XRD and BET analysis, H2 and CH4 TPR, FT-IR, TGA under reaction mixture and isothermal tests in a fixed bed. They were compared with reference compounds containing copper oxide and copper aluminate, respectively. The applicability of catalysts in a fluidized bed was analyzed. Figure optionsDownload full-size imageDownload as PowerPoint slide