Selective methanation of CO over Ni/Al2O3 catalyst: Effects of preparation method and Ru addition

The Synergy Effect of Ni-M (M = Mo, Fe, Co, Mn or Cr) Bicomponent Catalysts on Partial Methanation Coupling with Water Gas Shift under Low H2/CO Conditions

“…At last, γ-Al 2 O 3 material is adopted as the catalyst support due to its abundance and various advantages, such as high specific surface area, favorable mechanical property and satisfactory thermal stability. Particularly, from plentiful exposed literature [19][20][21], the majority of the researchers utilized powder catalysts (micrometer scale), and the employed reaction tube was comparatively small. It is well known that an inevitable drawback of massive powder catalyst is its induced problems of pressure drop.…”

Highly Active and Dispersed Ni/Al2O3 Catalysts for CO Methanation Prepared by the Cation–Anion Double-Hydrolysis Method: Effects of Zr, Fe, and Ce Promoters

“…The coprecipitation method for Ni/Al 2 O 3 catalyst have advantages in terms of metal dispersion and thermal stability as compared to those obtained by the impregnation method . However, a basic precipitation agent, , such as urea, NH 4 OH, NaOH, or K 2 CO 3 , will inevitably be required in the preparation procedure, which may cause serious environmental pollution and a waste of reagents. The combustion method has proved to be a simple and rapid process for preparing catalysts with a uniform composition and high dispersion .…”

Ultra-low temperature carbon (di)oxide hydrogenation catalyzed by hybrid ruthenium–nickel nanocatalysts: towards sustainable methane production

“…Interestingly, thermodynamic equilibrium constants for reversible reactions of CO2/CO hydrogenation become higher and higher as the temperature gets lower 19 , which also makes low temperatures attractive in terms of process thermodynamics. Currently, existing low temperature CO, CO2 or syngas methanation studies typically exceed 200 °C for CO methanation and 300 °C for CO2 methanation 23,24 . The reactions are often performed at elevated pressures as well, thereby incurring an additional cost for safety and installations.…”