Activated Carbon (TPAC) of high adsorption capacities and highly active surface properties were prepared from Thevetia peruviana by physical and chemical processes such as direct pyrolysis, dolomite process, Chemical activation with H2SO4 + H2O2, impregnation of raw material with Conc. H2SO4, KOH, ZnCl2 and H3PO4 solution respectively followed by activation at 800oC. Adsorption capacity of acti...

Some physical and chemical properties of the cancerostat cyclophosphamide (generic name: ENDOXAN) and its basic constituents H3PO4 and nor-N-mustard have been calculated with the help of a modified CNDO/S-method. The spectroscopic data of the H3PO4, which is the starting-point for a corresponding calculation of cyclophosphamide, has been studied by taking account of the 3 d electron of the phos...

The purpose of this paper is to investigate the inhibition effect of some Chalcone derivatives on the corrosion behavior of aluminum in 1 M phosphoric acid solutions with and without Chalcone derivatives and to investigate the influence of halide additives namely: KCl, KBr and KI on the inhibition efficiency of aluminum. For this purpose, polarization (DC) and weight loss measurements were used...

The impact that nitrogen (N), phosphorus (P), and potassium (K) application rates on the sulfur (S) fractions in leaves and fruits of greenhouse-grown cucumbers plants (Cucumis sativus L. cv. Brunex) are presented. The treatments were as follows: N (N11⁄4 5 g NO3NH4=m, N21⁄4 10 g NO3NH4=m, N31⁄4 20 g NO3NH4=m , N41⁄4 40 g NO3NH4=m), two levels of P (P11⁄4 8 g H3PO4=m 2 and P21⁄4 16 g H3PO4=m), ...

Activated carbons with a high BET surface area and a well-developed porosity have been prepared from pyrolysis of H3PO4-impregnated lignin precipitated from kraft black liquors. Impregnation ratios within the range of 1-3 and activation temperatures of 623-873 K have been used, giving rise to carbons with different porous and surface chemical structure. Increasing the activation temperature and...