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New indolizine grafted polysilanes and fluorescence properties of the synthesis anemitstrongbluefluorescent. Soitispromisingtobetheflu-orescentfunctionalmateria1. Keywords: polysilane; fluorescenceproperty; indolizine (pick No. 1946 on) [4] RhodesWH. [J]. JournalofAmericanSociety,MBT Shoes Cheap, 1981,ugg boots australia,64 (1) :13-19. [5] HolcombeCE. CementitiousYttriaProducts [M]. Oak [6] Hu Rongzu, SHI Qi-Zhen. Press, 2001. [7] Liu Ji Jin, Chen Zongzhang. (11) :1833 -1837. Thermal analysis kinetics [M]. Beijing: Science Press [J]. Chinese Journal of Nonferrous Metals, 2004,sheepskin ugg boots,14 Ridge: OakRidge,ugg boots australia, 1978. Kineticsofthermalfecompositionofthehydrateprecursorfispersedwith (NH4) 2SO4forsynthesizingY203nanopowdersLUGuang-zhe, SUNXu-dong, LIXiao-dong, XIUZhi-meng (KeyLaboratoryforAnisotropyandTextureofMaterials (MinistryofEducation), SchoolofMaterialsandMetallurgy, NortheastenUniversity, Shenyang110004, China) Abstract: BasedonTG-DSCexperiment, thekineticsofthermaldecompositionofthehydrateprecursorwith (NH4) 2SO4dispersantforsynthesizingY2O3nanopowderswereinvestigated. TheFlynn-Wall-OzawaintegralmethodandtheSatava. -SestakintegralmethodwereusedrespectivelytoanalyzetheTG - DSCcurvesofthepre - cursoratdifferentheatingrates, andthetwomethodsgavequitesimilarcalculatedresultsofkineticparameters. ThedecompositionprocessoftheprecursorcanbeexpressedasY2 (OH) 5NO3 ・ nH2OY2 (OH) 5NO3Y2O2 (OH) NO3Y2O3releaseofabsorbedSOi one. Thecalculatedactivationenergiesare13.42, 57.90,132.08 and137.56ld/mol, andthereactionmechanismsaccordswithmampelpowerprinciple, Avrami-Erofeefunction, Avrami-Erofeefunctionandmampelpowerprinciple, respectivelyforthefourstages. Thecorrespondingreac-tionmechanismsarerandomnucleationandgrowth. Keywords: Y203; hydrateprecursor; thermaldecomposition; kineticanalysis} (NH4) 2804 相关的主题文章： mbt sandals shoes APS conducting nanocomposites of Boric acid on nano-BaMgAl10O17 Eu ^ 2 + luminescent material preparation, crystal structure and luminescent properties of _2785 sheepskin ugg boots The shadow of the White Rose - |
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