High hydrothermal stability of mesoporous Ni-phyllosilicate spherical particles

We report mesoporous nickel-phyllosilicate spherical particles with very high hydrothermal stability. Meso-porous nickel-silica samples were prepared with a surfactant by a facile one-pot sol-gel reaction under ammonia basic conditions. Ni/Si molar ratio was adjusted as 0.3, 1, and 9. Hydrothermal stability was investigated inside distilled water at 100 degrees C both under a static condition inside a convection oven for 8 weeks and a reflux condition for 4 weeks. The crystal structure of mesopore framework was analyzed using X-ray diffraction before and after the hydrothermal treatment. Spherical particle shape and pore characterization were thoroughly investigated using transmission-and scanning electron microscopy as well as nitrogen adsorption-desorption isotherm after the hydrothermal treatment. Thermal stability and elemental electronic state were also analyzed using ther-mogravimetric analyzer and X-ray photoelectron spectroscopy. In this work, it is strongly suggested that mes-oporous nickel-phyllosilicate particles can be used as a reusable catalyst and a versatile catalytic support material in various chemical industry including oil company.

Automated summary

This study reports mesoporous nickel-phyllosilicate spherical particles with high hydrothermal stability, which were analyzed using various techniques. The results suggest that these particles can be used as reusable catalysts and versatile catalytic support materials in the chemical industry.