In the work, composition of starting materials and reaction products was checked by chromatographic method. The purpose work is to study effect temperature on decomposition process propane-butane mixture at high temperatures. Qualitative analysis carried out method "witnesses", quantitative internal normalization. Spatial performed a DRON- 4.0 (CuKa - radiation) diffractometer, particle size sc...

Conventional (anthracite, calcined petroleum coke, and coke) non-conventional (biochar, biocokes (3 wt.% torrefied wood, 3 coke + charcoal)) carbon-bearing sources have been studied for their use in electric arc furnace (EAF)-based steel production. Commonly, the of carbon EAFs, one important properties is content fixed carbon, release volatiles as well elemental composition inorganics. The six...

Condensate porosity in porous materials has a significant influence on comfort, energy consumption, and material’s strength durability. The variation of the moisture content material for given relative humidity describes storage capacity to be determined experimentally through water sorption isotherm. However, characterisation isotherm is very time-consuming, mostly high conditions, which may c...

El aprovechamiento de desechos vegetales para la obtención carbón activado se ha empleado en los últimos años remoción contaminantes metálicos pesados aguas. Por ello, este estudio presenta a partir cáscara naranja (CACN) reciclada, sintetizado por dos procesos activación y luego tratamiento térmico, iones cadmio, Cd(II), debido su toxicidad alta. Las caracterizaciones espectroscopía Raman FTIR...

the characterizations of natural diatomite from birjand deposit (iran) were studied such as chemical compositions, specific surface area, total pore volume, pore size distribution and xrd. the diatomite that was treated only with sulfuric acid displayed a larger surface area, expanded total pore volume and increased pore size in comparison with both washed natural diatomite with deionized water...

New modified acidic catalysts were prepared from the treatment of silica, titania and silica prepared from hydrolyzed tetraethyl orthosilicate (TEOS) with sulfuric and phosphoric acid. The sulfated and phosphated silica synthesized from TEOS were calcined at 450 and 650 ◦C. These catalysts were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), transmissio...

copper specimen grids (300 meshes) with formvar/carbon (Beijing XXBR Technology Co.) were employed as received without further purifications. Deionized (DI) water (resistance >18.2 MΩ • cm-1) was used in all of our experiments. Characterization: Nitrogen physisorption isotherms were measured at 77 K with a static volumetric instrument Autosorb-6b (Quanta Chrome). Prior to each measurement, the ...

Introduction: Medications used to treat oral ulcers include corticosteroids, anesthetics, and antihistamines. These can be as gels, mouthwashes, pastes, ointments, etc. Diphenhydramine hydrochloride (DPH) has local anesthetic properties that help the aphthae. One of drawbacks delivery transmucosal is quick turnaround time gel, a mucous form located on epithelial film surface. Methods: Therefore...

A sol–gel technique was successfully employed in creating pure and W-substituted zinc ferrite, with nominal compositions of ZnFe2−2xWxO4 (0.0 ≤ x 0.15). For the purposes investigating physical chemical properties generated powders, several analytical techniques were used. In TEM images all compositions, mixed-shaped particles (cubic, spherical, hexagonal) observed. The crystallite size decrease...

To study the photodegradation of organic pollutants at the interface of minerals and water in natural environment, three series of alumina-coupled iron oxides (Al(2)O(3)-Fe(2)O(3)-300, Al(2)O(3)-Fe(2)O(3)-420, and Al(2)O(3)-Fe(2)O(3)-550) with different alumina fraction were prepared and characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and Barret-Joyner-Halender (BJH), and...