The effect of different active phases Fe/SiO2 catalyst on the physio-chemical properties and catalytic performance in CO2 hydrogenation under mild conditions (at 220 °C an ambient pressure) was comprehensively studied this work. prepared by incipient wetness impregnation method. Hematite (Fe2O3) calcined activated hydrogen, carbon monoxide, hydrogen followed to form a metallic iron (Fe/SiO2-h),...

A recent study of temperature-programmed desorption (TPD) measurements of small linear alkane molecules (n-alkanes, with formula C(N)H(2N+2)) from C(0001) deposited on Pt(111) shows a linear relationship of the desorption energy with increasing n-alkane chain length N. We here present a van der Waals density functional study of the desorption barrier energy of the ten smallest n-alkanes (of car...

Adsorbate geometry and reaction dynamics play essential roles in catalytic processes at surfaces. Here we present a theoretical and experimental study for a model functional organic/metal interface: isophorone (C9H14O) adsorbed on the Pd(111) surface. Density functional theory calculations with the Perdew-Burke-Ernzerhoff (PBE) functional including van der Waals (vdW) interactions, in combinati...

Plasma Resource Recovery (PRR) is a revolutionary technology that can treat virtually any type of waste by combining gasification with vitrification. Vitrification produces inert slag that can be used as a construction material. Gasification produces a fuel gas containing carbon monoxide (CO) and hydrogen (H2), used for cogeneration of electricity and steam. The plasma fired eductor which is th...

The growth of Au on an ultra-thin, ordered Mo(112)–(8 · 2)-TiOx, was investigated using scanning tunneling microscopy (STM), low energy ion scattering spectroscopy (LEISS), X-ray photoelectron spectroscopy (XPS), and temperature programmed desorption (TPD). Wetting of the TiOx surface by Au was observed with STM and LEISS, and the ordering of the Au films was atomically resolved with STM. TPD s...

The hollow CuO@SiO2 spheres with a mean diameter of 240 nm and a thin shell layer of about 30 nm in thickness was synthesized using an inorganic SiO2 shell coating on the surface of Cu@C composite that was prepared by a two-step hydrothermal method. The obtained hollow CuO@SiO2 spheres were characterized by ICP-AES, nitrogen adsorption-desorption, SEM, TEM, XRD, H2-TPR, CO-TPR, CO-TPD and NO-TP...

Oral administration of lipid-soluble allithiamines [thiamine propyl disulfide (TPD) and thiamine tetrahydrofurfuryl disulfide (TTHF)] rapidly increased thiamine activity in whole blood, red blood cells, cerebrospinal fluid, and urine in normal and thiamine-deficient subjects. These thiamine congeners also restored red blood cell transketolase to normal in alcoholics with thiamine deficiency. Su...

This study purports to develop and empirically examine a model for explaining technology acceptance decisions by individual law enforcement officers. Specifically, we describe the research model and hypotheses, detail our study design, and highlight important results from a pretest study that included 42 detectives and police officers from the Tucson Police Department (TPD). Based on the pretes...

A kinetics study of the CO+NO reaction over Pd has been carried out using single-crystal, model planar-supported, and conventional high-surface-area Pd/Al2O3 catalysts. A pronounced structure sensitivity is evident that results in a rate enhancement over the Pd(111) single crystal relative to the more open (100) and (110) faces, and for larger supported particles relative to smaller ones. Tempe...