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2013 | 11 | 5 | 725-735
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Investigation of thermal and catalytic degradation of polystyrene waste into styrene monomer over natural volcanic tuff and Florisil catalysts

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Thermal and catalytic degradation of polystyrene waste over two different samples of natural volcanic tuff catalyst comparative with Florisil catalyst has been carried out in order to establish the conversion degree into styrene monomer. The polystyrene waste (PS) was subjected to a thermal degradation process in the range of 380–500°C in presence of studied catalysts in a ratio of 1/10 in mass, catalyst/PS. The catalysts were characterized by N2 adsorption-desorption isotherms (BET), Scanning Electron Microscopy (SEM) and Fourier-transform infrared spectrometry (FTIR). Influences of temperature and type of catalysts on the yields and on the distribution of end-products obtained by thermal and catalytic degradation of polystyrene waste have been studied. The maximum yields of liquid products were obtained at 460°C degradation temperature and were calculated between 83.45% and 90.11%. The liquid products were characterized by gas chromatography mass spectrometry (GC-MS) and FTIR analytical techniques. The GC-MS results showed that the liquid products contained styrene monomer up to 55.62%. The FTIR spectra of liquid products indicated the specific vibration bands of the functional groups of compounds of liquid products. The amounts of styrene monomer obtained were influenced by structural and textural properties of studied catalyst and the contribution on product distribution is discussed. [...]
Physical description
1 - 5 - 2013
27 - 2 - 2013
  • Raluca Ripan Institute for Research in Chemistry, Babeş-Bolyai University, 400294, Cluj-Napoca, Romania
  • Raluca Ripan Institute for Research in Chemistry, Babeş-Bolyai University, 400294, Cluj-Napoca, Romania
  • Raluca Ripan Institute for Research in Chemistry, Babeş-Bolyai University, 400294, Cluj-Napoca, Romania
  • Metav Research-Development, 020011, Bucharest, Romania
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