Sulfur was impregnated onto activated carbon fibers ACFs through H2S oxidation catalyzed by the sorbent surface in a fixed-bed reactor. By changing the temperature and duration of the sulfur impregnation process, ACFs with different sulfur contents were developed. Characterization of ACFs before and after sulfur impregnation was conducted by surface area analysis, energy dispersive X-ray analys...

Three bimetallic Ni-Co (Ni:Co ratio 1:3, 1:1 and 3:1) two monometallic (Ni Co) nanoparticles supported on Al2O3 were synthesized by incipient wet impregnation characterized various technics (N2-physisorption, XRD, H2-TPR, CO-chemisorption elemental analysis). It was demonstrated XRD that NiCo alloys present solids. The catalytic properties of all catalysts determined for the hydrodeoxygenation ...

The purpose of this study was to investigate if it was possible to strengthen a tooth for autologous tooth crown transplant by using the resin impregnation method already used for industrial purposes. Eightyfour upper first premolar tooth crowns were divided into three groups (n=28 each) to be kept either wet, dry for one day, or dry for one week. In addition, within each group, the teeth were ...

BACKGROUND The Golgi-Cox stain is an established method for characterising neuron cell morphology. The method highlights neurite processes of stained cells allowing the complexity of dendritic branching to be measured. NEW METHODS Conventional rapid Golgi and Golgi-Cox methods all require fresh impregnation in unfixed brain blocks. Here, we describe a modified method that gives high quality s...

Activated carbon was prepared from cattail by H3PO4 activation. The effects influencing the surface area of the resulting activated carbon followed the sequence of activated temperature > activated time > impregnation ratio > impregnation time. The optimum condition was found at an impregnation ratio of 2.5, an impregnation time of 9 hr, an activated temperature of 500 degrees C, and an activat...

Private consumers and professionals may experience acute inhalation toxicity after inhaling aerosolized impregnation products. The distinction between toxic and non-toxic products is difficult to make for producers and product users alike, as there is no clearly described relationship between the chemical composition of the products and induction of toxicity. The currently accepted method for d...

New Pt-Co catalysts of hydrogen purification from CO impurities for fuel cells were fabricated via the deposition monodispersed 1.7 nm Pt nanoparticles using laser electrodispersion on Co-modified ZSM-5 prepared by Co(CH3COO)2 impregnation. The structure zeolites was studied low-temperature N2 sorption, TEM, EDX, and XPS methods. comparative analysis samples with different (0.01–0.05 wt.%) Co (...

nanocrystalline ceria has been considered as support for carbon monoxide preferentially oxidation. in this study ceria was prepared by precipitation method and the effects of preparation conditions, such as ph of solution (8-10), aging time (1-12 hr), drying temperature (80-120 °c), calcination time (2-6 hr) and temperature (400-600 °c) were investigated on ceria synthesized powders properties....