Determination of pore size distribution, surface area, and acidity in fluid cracking catalysts (FCCs) from nonlocal density functional theoretical models of adsorption and from microcalorimetry methods

Article Abstract:

A method on nonlocal density functional theory (NLDFT) was used to interpret the data for the adsorption of nitrogen at 77 K within the pores of three different commercial fluid cracking catalysts (FCCs) before and after their use in a refinery catalytic cracking unit. The integral equation of adsorption was inverted by a regularization method to yield the micropore and mesopore size distribution over a wide range of pore widths.

Density functionals, Density functional theory

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The effect of nitrogen ion implantation on the photoactivity of TiO2 ruyile single crystals

Article Abstract:

The main objective of this investigation is to discuss the influence of substitutional nitrogen doping on the photoactivity of the rutile TiO2(110)single-crystal surface is presented. In the conclusion, the Fermi level and thus the reduction potential of the semiconductor material becomes a function of irradiation intensity and is adjustable by the photon flux.

Observations, Titanium dioxide, Surface chemistry

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Quantitative estimation of the efficiency of electron injection from excited sensitizer dye into nanocrystalline ZnO film

Article Abstract:

The absolute value of the efficiency of electron injection from an excited coumarin dye (NKX-2311) into a nanocrystalline ZnO film was estimated through transient absorption measurements. The electron injection process can also be quantitatively analyzed by comparing their efficiencies.

Optical properties, Zinc oxide

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