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Molybdenum compound and the polymer increases cooperation with their performance

Author: WangMang
Tutor: SongLeXin
School: University of Science and Technology of China
Course: Inorganic Chemistry
Keywords: Cyclodextrin Molybdenum compound PTFE Cooperation with Canada Heterogeneous Catalysis Nanoparticles
CLC: TB383.1
Type: Master's thesis
Year: 2011
Downloads: 11
Quote: 0
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Abstract


The use of ammonium molybdate tetrahydrate (AMT) and β-cyclodextrin (CD), prepared by a novel molecular - ion adduct. By fulfilling a series of experimental tests, we found that, AMT, and which is formed with the β-CD adduct between the X-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy Spectroscopic Properties has important differences on the field emission scanning electron microscope show, AMT and β-CD is made of crystal growth AMT dominated by molecular packing, particle size and morphology of the AMT before seen in a very different This morphology was attributed to the difference in AMT and β-CD molecules between - ion interactions In thermal gravimetric analysis, AMT and β-CD in the thermal stability of the adduct have increased significantly, this phenomenon has also been confirmed by experiments calcined This phenomenon proves that occurred in the AMT and β -CD molecules between - ion interactions in reconciling adduct component thermal degradation process plays an important role. Moreover, our results show that, AMT and its adduct with a different catalytic performance thiophene and its derivatives catalytic desulfurization experiments. AMT adduct after being reduced catalytic efficiency of the fact that, AMT, and β-CD complexation between the last, unusual molecular ions: NH 3 , NH 2 and NH is both free AMT GC TOF mass spectrometry coupling was found .. AMT and polytetrafluoroethylene (PTFE) with the result of addition between the cooperation of the three important consequences: a) In the adduct with respect to the theoretical value, the PTFE has a lower decomposition temperature (ΔT m , 82 K) has a smaller final residual mass (ΔRM, 39%) in the adduct; b) forming a MoO 3 and MoO 2 nanoparticles; c) C. difficile is MoO 2 nanoparticles are covered with graphite, and has excellent soft magnetic properties. less degradation illustrates the temperature between AMT and PTFE has a strong interaction implies less residual mass in the final nitrogen gas under the influence of a chemical reaction between the two has occurred and, in Raman spectroscopy revealed Degradation case into graphite PTFE, and the presence of graphite resulted in complete degradation became AMT spindle of MoO 2 nanoparticles. temperature air calcination experiments described in the presence of PTFE AMT degradation into α-MoO 3 nanoparticles instead of MoO 2 nanoparticles, and we obtained MoO 3 nanoparticles in hydrogen peroxide in the presence of thiophene oxidation catalytic ability to have a more positive and we believe that the current work not only in the degradation of the polymer material has important implications for significance, but will attract more research team have excellent magnetic properties of transition metal Oxide Nanoparticles, and their use in heterogeneous catalysis in the practical application.

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