p2o5-sio2 (30% w/w) was found to be a useful catalyst for the synthesis of various 2-substituted aryl benzimidazoles under solvent-less and in solvent conditions from o-phenylenediamine and aldehydes. the products were directly recrystallized from methanol.

BACKGROUND Bioactive glass-ceramics have the ability to directly bind to bones and have been widely used as bone graft substitutes due to their high osteoconductivity and biocompatibility. CaO-SiO2-P2O5-B2O3 glass-ceramics are known to have good osteoconductivity and are used as bone graft extenders. METHODS This study aimed to evaluate the effects of the resorbing properties of glass-ceramic...

a highly efficient, simple and green solvent-free protocol for the preparation of poly-substituted quinolines via friedländer hetero-annulation reaction between 2-aminoaryl ketones and carbonyl compounds in the presence of silica-supported p2o5 (p2o5 / sio2) is described. in this method, the title compounds are obtained in high to excellent yields and in short reaction times.

In the present work, the effect of the CaO/P2O5 ratio on the composition of sol-gel synthesized 58SiO2-(19 - x)P2O5-(23 + x)CaO (x = 0, 5, 10 and 15 mol%) glass samples was studied. Further, the effect of NBO/BO ratio on hydroxy carbonated apatite layer (HCA) forming ability based on dissolution behavior in simulated body fluid (SBF) solution was also investigated. CaO/P2O5 ratios of synthesize...

Crystalline structure of CaO-P2O5-SiO2 system at 3,000 K were investigated by molecular dynamic simulation. The models with different concentrations P2O5 (5-40 mol%) constructed using Born-Mayer-Huggins potentials. size was from 5,270-5,520 atoms. local environment elements and glassy-network in detail. radial distribution functions (RDFs) showed that the average first nearest neighbor distance...

In order to better understand and develop the technology of integrating dephosphorization decarburization in a single converter (abbreviated as IDDSC), relevant thermodynamic issues were discussed by calculation. Based on calculation, bridges between phosphorus distribution ratio, temperature, slag composition constructed. Besides, connections behavior microstructure also established investigat...