The rare earth metal benzoates were synthesized using hydrothermal reaction. The complexes were characterized by elemental analysis, IR and X-ray powder diffraction. They can be represented by general formula RE (C6H5...The rare earth metal benzoates were synthesized using hydrothermal reaction. The complexes were characterized by elemental analysis, IR and X-ray powder diffraction. They can be represented by general formula RE (C6H5COO)(3)(RE = La, Nd, Sm, Eu, Gd, Dy and Er). All of them are monoclinic and have layered structure. The mechanism of thermal decomposition of rare earth metal benzoates was studied by using TG, DTA, IR, and gas chromatography-mass spectrometry. The thermal decomposition of the rare earth benzoates in nitrogen proceeded in two stages; firstly it decomposed to form RE2O(CO3)(2) and organic compounds, then RE2O(CO3)(2) decomposed further to form rare earth metal oxides and carbon dioxide. The organic compounds obtained from the first step of the reaction are mainly benzophenone, 9,10-anthraquinone, 1, 3-Diphenylisobenzofuran and so on.展开更多
Alkaline earth benzoates were synthesized using hydrothermal reaction. The complexes were characterized by elemental analysis, IR, X ray powder diffraction. All of them are monoclinic and have layered structure. The ...Alkaline earth benzoates were synthesized using hydrothermal reaction. The complexes were characterized by elemental analysis, IR, X ray powder diffraction. All of them are monoclinic and have layered structure. The mechanism of thermal decomposition of alkaline earth benzoates was studied by using TG, DTA, IR and gas chromatography mass spectrometry. The thermal decomposition of alkaline earth benzoates in nitrogen proceeded in one or two stages: they decomposed to form MCO 3 (M=Ca,Sr,Ba) or MgO and organic compounds, respectively. The organic compounds obtained from decomposition reaction are mainly benzophenone, triphenylmethane and so on.展开更多
1 Introduction The design and construction of metal-organic polymers has been a field of rapid growth in materials chemistry because of their intriguing topologies and potential applications as functional materials. ...1 Introduction The design and construction of metal-organic polymers has been a field of rapid growth in materials chemistry because of their intriguing topologies and potential applications as functional materials. In this regard, every effort has been devoted to the deliberate design and control of self-assembly infinite coordination networks via selecting the chemistry structures of ligands, Multidentate carboxylate ligands are widely adopted for construction of coordination frameworks due to their rich coordination modes.展开更多
文摘The rare earth metal benzoates were synthesized using hydrothermal reaction. The complexes were characterized by elemental analysis, IR and X-ray powder diffraction. They can be represented by general formula RE (C6H5COO)(3)(RE = La, Nd, Sm, Eu, Gd, Dy and Er). All of them are monoclinic and have layered structure. The mechanism of thermal decomposition of rare earth metal benzoates was studied by using TG, DTA, IR, and gas chromatography-mass spectrometry. The thermal decomposition of the rare earth benzoates in nitrogen proceeded in two stages; firstly it decomposed to form RE2O(CO3)(2) and organic compounds, then RE2O(CO3)(2) decomposed further to form rare earth metal oxides and carbon dioxide. The organic compounds obtained from the first step of the reaction are mainly benzophenone, 9,10-anthraquinone, 1, 3-Diphenylisobenzofuran and so on.
文摘Alkaline earth benzoates were synthesized using hydrothermal reaction. The complexes were characterized by elemental analysis, IR, X ray powder diffraction. All of them are monoclinic and have layered structure. The mechanism of thermal decomposition of alkaline earth benzoates was studied by using TG, DTA, IR and gas chromatography mass spectrometry. The thermal decomposition of alkaline earth benzoates in nitrogen proceeded in one or two stages: they decomposed to form MCO 3 (M=Ca,Sr,Ba) or MgO and organic compounds, respectively. The organic compounds obtained from decomposition reaction are mainly benzophenone, triphenylmethane and so on.
基金Supported by the National Natural Science Foundation of China(Nos. 20601007, 50472020 and 20773034)the Natural Science Foundation of Hebei Education Department, China(No.ZH2006002)+1 种基金the Natural Science Foundation of Hebei Province, China(No.B2008000143)the Doctoral Foundation of Hebei Normal University, China(No.103261).
文摘1 Introduction The design and construction of metal-organic polymers has been a field of rapid growth in materials chemistry because of their intriguing topologies and potential applications as functional materials. In this regard, every effort has been devoted to the deliberate design and control of self-assembly infinite coordination networks via selecting the chemistry structures of ligands, Multidentate carboxylate ligands are widely adopted for construction of coordination frameworks due to their rich coordination modes.
