Hexagon plate-like Al8B4C7 powders were success- fully synthesized using a mixture of diboron trioxide, ac- tivated carbon and aluminum or alumina by a carbotherreal reduction process. The effect of A1 source and star...Hexagon plate-like Al8B4C7 powders were success- fully synthesized using a mixture of diboron trioxide, ac- tivated carbon and aluminum or alumina by a carbotherreal reduction process. The effect of A1 source and start- ing materials additions on synthesis of Al8B4C7 was in- vestigated. The phase composition and microstructure of Al8B4C7 powder were characterized by means of XRD, SEM and EDS. The main phase compositions of the products synthesized Jkom A1, B2O3 and activated carbon are Al8B4C7 and A120C. Al2O3 can replace Al to synthe- size Al8B4C7. AlsB4C7 grains synthesized from Al2O3, B2O3 and activated carbon are hexagon plate-like and have a thickness of 10 tzm and a size of about 100 tzm.展开更多
An efficient greener one pot synthesis of dimethyl-dihydro-7H-chromeno[3, 2-h]quinolin-8(9H)-one derivatives has been synthesized through cyclization of aromatic aldehyde, dimidone and 8-hydroxy-quinoline through one-...An efficient greener one pot synthesis of dimethyl-dihydro-7H-chromeno[3, 2-h]quinolin-8(9H)-one derivatives has been synthesized through cyclization of aromatic aldehyde, dimidone and 8-hydroxy-quinoline through one-pot condensation method is described. The synthesized compounds are screened for further biological activities against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis, Bacillus using cut plate method and disc diffusion method.展开更多
This note reports a new procedure of polycrystalline synthesis and a new technique of single crystal growth on AgGaS2, i.e. two-zone temperature oscillation vapor transporting and descending crucible with rotation. A ...This note reports a new procedure of polycrystalline synthesis and a new technique of single crystal growth on AgGaS2, i.e. two-zone temperature oscillation vapor transporting and descending crucible with rotation. A single phase dense AgGaS2 polycrystalline ingot was synthesized, and a crack-free AgGaS2 single crystal with 15 mm in diameter and 30 mm in length was grown by the techniques mentioned above. Structure integrity of the crystal was studied by the X-ray diffraction technique. Six order X-ray spectra from the {011} face of the crystal were obtained, and an anomalous phenomenon was observed for the first time that intensity of the higher order diffraction peak is much stronger than that of the lower order diffraction peak. Etch-pits of the crystal were observed by the scanning electron microscopy (SEM).展开更多
基金supported by projects of the National KeyTechnology R&D Program(Grant No.2011BAB03B04)the Natural Science Foundation of China(NSFC)(Grant No.51274156)
文摘Hexagon plate-like Al8B4C7 powders were success- fully synthesized using a mixture of diboron trioxide, ac- tivated carbon and aluminum or alumina by a carbotherreal reduction process. The effect of A1 source and start- ing materials additions on synthesis of Al8B4C7 was in- vestigated. The phase composition and microstructure of Al8B4C7 powder were characterized by means of XRD, SEM and EDS. The main phase compositions of the products synthesized Jkom A1, B2O3 and activated carbon are Al8B4C7 and A120C. Al2O3 can replace Al to synthe- size Al8B4C7. AlsB4C7 grains synthesized from Al2O3, B2O3 and activated carbon are hexagon plate-like and have a thickness of 10 tzm and a size of about 100 tzm.
文摘An efficient greener one pot synthesis of dimethyl-dihydro-7H-chromeno[3, 2-h]quinolin-8(9H)-one derivatives has been synthesized through cyclization of aromatic aldehyde, dimidone and 8-hydroxy-quinoline through one-pot condensation method is described. The synthesized compounds are screened for further biological activities against Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis, Bacillus using cut plate method and disc diffusion method.
基金This work was supported by the Sichuan Provincial Research Foundation of of China (Grant No: 99-479).
文摘This note reports a new procedure of polycrystalline synthesis and a new technique of single crystal growth on AgGaS2, i.e. two-zone temperature oscillation vapor transporting and descending crucible with rotation. A single phase dense AgGaS2 polycrystalline ingot was synthesized, and a crack-free AgGaS2 single crystal with 15 mm in diameter and 30 mm in length was grown by the techniques mentioned above. Structure integrity of the crystal was studied by the X-ray diffraction technique. Six order X-ray spectra from the {011} face of the crystal were obtained, and an anomalous phenomenon was observed for the first time that intensity of the higher order diffraction peak is much stronger than that of the lower order diffraction peak. Etch-pits of the crystal were observed by the scanning electron microscopy (SEM).
