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@MISC{Pielsticker:992259,
      author       = {Pielsticker, Stefan and Hendricks, Katja and Knevels,
                      Christoph and Lehnertz, Marcus and Palkovits, Regina and
                      Kneer, Reinhold},
      title        = {{E}xperimental determination of quantitative yields from
                      polymethyl methacrylate ({PMMA}) flash pyrolysis in a
                      fluidized bed reactor via online {FTIR} gas analysis –
                      {S}upplementary dataset},
      reportid     = {RWTH-2024-08099},
      year         = {2025},
      abstract     = {Chemical recycling processes, such as pyrolysis, have the
                      potential to break down the polymer (e.g., polymethyl
                      methacrylate, PMMA) into its main building blocks
                      (monomers), and thus enable to preserve the full
                      functionality in closed-loop recycling processes. In this
                      study, products from flash pyrolysis of PMMA are
                      quantitatively determined using an ex-situ exhaust gas
                      analysis by means of Fourier-transform infrared (FTIR)
                      spectroscopy. To achieve this, the FTIR is additionally
                      calibrated for methyl methacrylate (MMA) with an MMA/N2
                      mixture of various concentrations. Flash pyrolysis
                      conditions (heating rates of approximately 1000 K/s are
                      realized with a small-scale fluidized bed reactor operated
                      with a nitrogen atmosphere and temperatures between 573 and
                      873 K with a continuous feed of PMMA granules. The
                      experiments reveal MMA yields up to 90 $\%$ at 673 K. With
                      increasing temperature, the MMA yield drops to approximately
                      50 $\%$ at 873 K. In return, the yields of the MMA
                      decomposition products such as carbon dioxide (CO2), methane
                      (CH4), carbon monoxide (CO), propylene (C3H6), and
                      formaldehyde (CH2O) increase. The approximated residence
                      time of 20 to 30 seconds leads to a stronger decomposition
                      of the MMA into its fragments (especially at higher
                      temperatures) than in other studies, which can be well
                      modeled with a single first-order decomposition mechanism. A
                      detailed analysis of captured condensate reveals a high
                      purity of MMA, which enables the feedback into the
                      polymerization process.},
      cin          = {412610 / 154005 / 150000},
      cid          = {$I:(DE-82)412610_20140620$ / $I:(DE-82)154005_20140620$ /
                      $I:(DE-82)150000_20140620$},
      pnm          = {DFG project G:(GEPRIS)240954932 - Experimentelle
                      Untersuchung von Pyrolyse- und Koksumsatzkinetiken in einem
                      „Well-Stirred-Reactor“ unter atmosphärischen und
                      druckbeaufschlagten Bedingungen (A01) (240954932) / DFG
                      project G:(GEPRIS)215035359 - TRR 129: Oxyflame -
                      Entwicklung von Methoden und Modellen zur Beschreibung der
                      Reaktion fester Brennstoffe in einer Oxyfuel-Atmosphäre
                      (215035359) / PFKA008 - Cluster 4 Plastics Recycling
                      (EXS-PF-PFKA008) / EXS - Excellence Strategy (EXS) / ERS
                      Prep Fund - Exploratory Research Space: Prep Fund als
                      Anschubfinanzierung zur Schließung strategischer Lücken
                      (EXS-PF)},
      pid          = {G:(GEPRIS)240954932 / G:(GEPRIS)215035359 /
                      G:(DE-82)EXS-PF-PFKA008 / G:(DE-82)EXS / G:(DE-82)EXS-PF},
      typ          = {PUB:(DE-HGF)32},
      doi          = {10.18154/RWTH-2024-08099},
      url          = {https://publications.rwth-aachen.de/record/992259},
}