The alkali nitrate mixtures are promising phase change materials (PCMs) in the temperature range (373?573) K for development of thermal storage systems. In this context, their thermochemical properties and diagrams which provide useful information needed better use. present paper, based on cesium nitrate, lithium sodium studied by both experimental optimization techniques. Thus, a critical anal...

Single crystals as well as microcrystalline powders of Cs2NiO2 were obtained via the azide/nitrate route from appropriate mixtures of CsN3, CsNO3 and NiO. The single-crystal structure analysis confirmed that Cs2NiO2 crystallizes in the tetragonal space group I4/mmm (Z = 2, a = 4.4090(3), c = 13.576(3) Å, R1 = 0.036, wR2 = 0.093). Above 45 K, Cs2NiO2 is paramagnetic, and an analysis based on the...

Analysis of dissolved metals in acid rock drainage (ARD) with an Agilent 4100 MP AES instrument that combines a nitrogen micro plasma with atomic emission detection (MP AES) was compared with an ICP-MS. Sample preparation consisted only of filtration, acidification (HNO3 1%) and addition of internal standard elements after appropriate dilution. In these complex matrices the systems gave identic...

In the present study, simultaneous gross immobilization of radioactive Cs and Sr in zirconium phosphate was investigated by two methods. “dry method,” a mixture HZr2(PO4)3 with varying amounts CsNO3 Sr(NO3)2 heat-treated at 700 °C for 5 h to prepare + immobilized samples. At 0.3 0.15, leaching 1 mol·dm−3 HCl solution treated 160 24 were 2.9 × 10−4 g·m−2 3.9 g·m−2, respectively. “autoclave aqueo...

Methodological challenges have long been an obstacle for the understanding of damage in concrete due to alkali-silica reaction (ASR). Time-lapse X-ray tomography could be key advancements but has not extensively exploited, mainly similar electron densities different material phases, which leads poor contrast tomograms. To address this limitation, we propose implementation two complementary agen...

the adsorption of pyrazolone(hpmsp), calix[4]-arene,cu and cs, on carbon nanotube(cnt) atroom temperature has been investigated using spectroscopy.uv spectroscopy indicated that pyrazolone molecules adsorbed on carbon nanotube at roomtemperature in compared calix[4]- arene molecules adsorbed approximately same.the amount ofpyrazolone(hpmsp) adsorb 3.8. le mol/g and amount calix[4]-arene adsorbe...