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PREPARATION AND PROPERTIES OF THE MICRO-POWDER PHASE AND A NEW PHASE OF AMMONIUM TETRAMOLYBDATES 被引量:1
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作者 Yin, Zhoulan Chen, Qiyuan +3 位作者 Zhang, Hengzhong Zhou, Guizhi Li, Yuangao Zhang, Pingmin 《中国有色金属学会会刊:英文版》 EI CSCD 1997年第1期19-22,共4页
PREPARATIONANDPROPERTIESOFTHEMICROPOWDERPHASEANDANEWPHASEOFAMMONIUMTETRAMOLYBDATES①YinZhoulan,ChenQiyuan,Zh... PREPARATIONANDPROPERTIESOFTHEMICROPOWDERPHASEANDANEWPHASEOFAMMONIUMTETRAMOLYBDATES①YinZhoulan,ChenQiyuan,ZhangHengzhong,Zhou... 展开更多
关键词 NEW PHASE of AMMONIUM tetramolybdate micro POWDER PHASE of AMMONIUM tetramolybdate PHASE transformation MOLYBDENUM
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A Novel Hybrid Solid Constructed from Tetramolybdate and Copper Complexes with Mixed Ligands: [{(Cu·phen)_2(tp)}{(Cu·phen·H_2O)_2(tp)}{Mo_4O_(14)}] 被引量:1
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作者 吴小园 翟全国 +2 位作者 陈丽娟 杨文斌 卢灿忠 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第4期389-394,共6页
A novel copper molybdate with mixed ligands, [{(Cu·phen)e(tp)} {(Cu·phen·H2O)2(tp)} {Mo4O14}(phen = 1,10-phcnanthroline, tp = tercphthalate) 1, has been hydrothermally synthesized and structur... A novel copper molybdate with mixed ligands, [{(Cu·phen)e(tp)} {(Cu·phen·H2O)2(tp)} {Mo4O14}(phen = 1,10-phcnanthroline, tp = tercphthalate) 1, has been hydrothermally synthesized and structurally characterized. The crystal belongs to monoclinic system, space group P2l/c with a = 13.1711(7), b = 19.6132(10), c= 13.6910(7) A, β = 117.6870(10)°, V= 3131.8(3) A^3, Z= 2, C64H44Cu4MoaN8O24, Mr= 1946.99, D, = 2.065 g/cm^3, F(000) = 1920,μ(MoKa) = 2.198 mm ^1, R = 0.0810 and wR = 0.2012 for 4233 observed reflections (I 〉 2σ(I)). The structural analysis indicates that the title compound contains a discrete tetramolybdate cluster decorated with copper colnplcx fragments and tp ligands bridging the clusters into a wave-like layer. The hydrogen bonding between adjacent layers further extends the COlnpound into a 3-D framework. 展开更多
关键词 POLYOXOMETALATE I 10-phenanthroline terephthalate tetramolybdate cluster crystal structure
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Massic Heat Capacities of Ammonium Penta-and Tetra-molybdates
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作者 YIN Zhou-lan CHEN Qi-yuan +1 位作者 ZHANG Ping-min YUE Wei 《Journal of Central South University》 SCIE EI CAS 2000年第4期216-218,共3页
Single phases of ammonium penta and tetra molybdates were prepared. The massic heat capacities at normal pre ssure below their decomposition temperatures were measured by drop method. The relationships of the massic h... Single phases of ammonium penta and tetra molybdates were prepared. The massic heat capacities at normal pre ssure below their decomposition temperatures were measured by drop method. The relationships of the massic heat capacities of ammonium molybdates with those of the decomposition products were also discussed. The results show that the massic heat capacities of ammonium molybdates can be estimated by adding together contributions from their decomposition products, and the less change of chemical bonds, the more accurate of the estimation. 展开更多
关键词 massic heat capacity ammonium pentamolybdate ammonium tetramolybdate drop method
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Phase Characterizations and Photocatalytic Applications of CuO-K_2Mo_4O_(13) Composites
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作者 M.Kassem 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2014年第1期180-184,共5页
A series of CuO-K2Mo4013 composite materials have been prepared by mixing appropriates quantities, in solid state, of CuO and pure K2Mo4013 according to the molar ratios CuO/K2Mo4013 = 0.05, 0.1, 0.2, 0.5, and 1. The ... A series of CuO-K2Mo4013 composite materials have been prepared by mixing appropriates quantities, in solid state, of CuO and pure K2Mo4013 according to the molar ratios CuO/K2Mo4013 = 0.05, 0.1, 0.2, 0.5, and 1. The prepared samples were characterized using techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), differential thermal analysis (DTA), nitrogen adsorption measurements, and UV spectroscopy. According to XRD results, the phase composition of the CuO-KeMo4013 systems has significantly changed by increasing the molar ratio CuO/ K2Mo4013 where new phases, identified as K2Mo3Olo and CuMoO4, have been detected. The formation of these new phases has been tracked through FT-IR and DTA measurements. The nitrogen adsorption-desorption measurements also reveal a change in the pore type of the studied materials due to the presence of these new phases. The photocatalytic activities of K2M04OI3 and CuO-K2Mo4013 composites were studied by means of monitoring the ability of these materials to the degradation, under UV irradiation, of methyl red in liquid media. It was found that the phase composition of the used samples significantly controls their photocatalytic activities. 展开更多
关键词 Potassium tetramolybdate Copper oxide Composite PHOTOCATALYST
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