Investigation of Various Metals on Hydrotalcite‐based Cu/Zn/Al Catalysts in Methanol Steam Reforming

Abstract

The catalytic properties of hydrotalcite‐based Cu/Zn/Al mixed oxides prepared by the incipient co‐precipitation method, in which various metals were doped through impregnation, were comparatively tested in the steam reforming of methanol (SRM). In addition, the catalysts were characterized in detail by a series of follow‐up surface techniques. Moreover, strong interaction and synergism between Ru and Cu species noticeably promoted methanol conversion and improved catalytic performance. Furthermore, an SRM reaction mechanism is proposed that rationalizes the relationship between copper dispersion on the surface and the size of the copper/oxygen interface where formed intermediates rearrange.

Catalytic hydrogen storage in liquid hydrogen carriers

“…Hu et al studied the influence of Pt, Pd, Rh, Au, Ag, Ru, Ni, and Co on CuO/ZnO/Al 2 O 3 derived from precursors with hydrotalcite structure in MSR. 175 The catalyst modified with Ru shows the best activity with methanol conversion increase of 20% at 240 °C compared to CuO/ZnO/Al 2 O 3 . At the same time, the introduction of Ru does not have a significant influence on CO selectivity.…”

Hydrolysis Precipitation Method for the Preparation of Cu‐ZnO@Al2O3 Catalyst in Methanol Steam Reforming

“…Among these factors, preparation method is very important undoubtedly since the preparation methods can affect the specific surface area, surface morphology, the interaction between the components and the distribution/dispersion of the active phase on the catalyst the structure, finally dominating catalytic performance of the catalyst. [5,[6][7][8][9][10][11][12][13][14][15][16][17][18] The common preparation methods for Cu-based catalysts include co-precipitation, [19] impregnation, [20] sol-gel, [21] hydrothermal method [22] and so on. At present, co-precipitation method is the mainstream for the production of commercial catalyst owing to its operation simplicity and satisfactory performance.…”

Modulating the active phase in perovskite LaCoO3 with B-site doping of Cu for efficient methanol reforming to produce hydrogen

“…[3][4][5][6] Cu-based catalysts have received wide attention because of low cost and high H 2 selectivity. [7][8][9][10] However, the migration deactivation of copper-based catalysts at high temperature is a key issue in catalyst research.…”