Abstract In the downstream of Oil & Gas industry and decline in oil production, NiAl-HT derived hydrotalciteis a candidate as catalyst to produce syngas methane dry reforming process. Hydrotalcite are lamellar compounds general formulation[M 1-x 2+ M x 3+ (OH) 2 ] x+ [A n- x/n .m H Owhere ionic or cationic character can be tuned by choice metal nature oxidation degree. NiAl-SPC samples were...

In this study, we compared the effect of commercial NiO, synthesis NiAl-HT and NiO-HT drived from hydrotalcite in Knoevenagel condensation reaction. The sample was synthesized by coprecipitation method with a molar ratio M2+/M3+ = 2 at constant basic pH. X-ray Diffraction (XRD) Fourier Transform Infrared Spectroscopy (FTIR) were utilized to identify crystalline phases present NiAl-HT, NiO. chem...

Epitaxial thin film growth by vapor deposition or molecular beam epitaxy under ultra‐high vacuum conditions generally occurs in two stages: (i) nucleation and growth of well‐separated islands on the substrate; (ii) subsequent formation of a thicker continuous film with possible kinetic roughening. For homoepitaxial growth, two‐dimensional (2D) monolayer islands are formed during submonolayer de...

Scanning tunneling microscopy studies reveal that two-dimensional nanoscale Ni islands formed by deposition of Ni on NiAl(110) between 200-400 K exhibit far-from-equilibrium growth shapes which change systematically with temperature. Island structure reflects the two types of adsorption sites available for Ni adatoms, and island shapes are controlled by the details of adatom diffusion along isl...

Cast nickel aluminum bronze (NAB) alloy is widely used for large engineering components in marine applications due to its excellent mechanical properties and corrosion resistance. Casting porosity, as well as coarse microstructure, however, are accompanied by a decrease in mechanical properties of cast NAB components. Although heat treatment, friction stir processing, and fusion welding were im...