Dipotassium [nickel(II) zirconium(IV)] tris-(orthophosphate) was prepared from a self-flux in the system K2O-P2O5-NiO-K2ZrF6. The title compound belongs to the langbeinite family and is built up from two [MO6] octa-hedra [M = Ni:Zr with mixed occupancy in ratios of 0.21 (4):0.79 (4) and 0.29 (4):0.71 (4), respectively] and [PO4] tetra-hedra inter-linked via vertices into a (3) ∞[M 2(PO4)3] fram...

The development of agriculture in Israel is strongly dependent upon the efficient use of irrigation water. Efficient use has led to a constant decrease in water consumption from an average of 8700 m/ha in 1951 to 5600 m/ha in 1990. In 1996, the Israeli farmer applies approximately 50% of the N and P2O5, and 65% of the K2O through fertigation. The Israeli experience is also applicable in China. ...

ZrO2 is an effective nucleation agent for low-expansion lithium–aluminum silicate (LAS) glass–ceramic (GC) with high Al2O3 content. However, the effect of still not fully understood in LAS glasses low contents and P2O5. In this work, on phase separation crystallization Li2O–Al2O3–SiO2–P2O5 were investigated. The results revealed that significantly increased Tg temperature Li2SiO3 Li2Si2O5 cryst...

Lithium cadmium phosphate glasses were prepared by melt quench technique. These glasses contain a mole % composition of x% Li2O-(50-x)% CdO-50%P2O5. The quantity x varies from 0-40 mole%. The physical properties reported in this paper are mass density ρ, modulus of rigidity η, coefficient of linear expansion α, transition temperature Tg, Softening temperature Ts, Oxygen packing density, Molar v...

Phosphate fertilizer experiments with nonbearing citrus trees were started at planting time in commercial groves on 5 flatwoods soils. The soils included 1) Brighton peat, 2) Sunniland, 3) Keri-Bradenton, 4) Immokalee, and 5) Immokalee-Pomello. Some of the phosphate treatments were applied only once, as broadcast applications at planting time. Other treatments were applied periodically to indiv...

A self-condensation cyclization reaction mediated by phosphorus pentoxide (P2O5) and catalyzed by zinc bromide (ZnBr2) is presented for the synthesis of polysubstituted 4-pyridones and 2-pyridones from β-keto amides. A variety of β-keto amides are used in this approach, and a wide range of functionalized 4-pyridones and 2-pyridones were obtained in good to excellent yields. When employing the N...