1 Ocak 2022 Dergi makalesi Açık Erişim

Koybasi, H. Hasan; Avci, Ahmet K.

Citation Style Language JSON

{
  "DOI": "10.1021/acs.iecr.2c01764", 
  "abstract": "Direct DME synthesis via CO2 hydrogenation in a membrane-integrated microchannel reactor is modeled. The proposed reactor comprises rectangular permeate and reaction channels separated by layers of sodalite membranes, permitting only H2O and H-2 transport. Reaction channels, dosed with CO2 and H-2, are washcoated with a physical mixture of methanol synthesis (Cu-ZnO/Al2O3 (CZA)) and dehydration (HZSM-5) catalysts. Pure H-2-fed permeate channels host the steam transported from reaction channels. The mathematical model of the isothermal, steady-state reactor involves conservation equations in catalyst and fluid phases, catalytic reactions, and membrane separation. The model is successfully benchmarked against literature-based experimental data. Differences between isothermal and non-isothermal models remain negligible. At 543 K, 50 bar, and H-2/CO2 = 3, cross-membrane H2O and H-2 transport increases membraneless CO2 conversion and DME yield values by more than 2-fold, i.e., up to similar to 73 and similar to 35%, respectively. Counter-current flow configuration offers more H2O separation than the co-current one. The sweep-to-reactive stream inlet velocity ratio affects cross-membrane mass transfer significantly. Reactor performance is positively correlated with the CZA/HZSM-5 mass ratio. A similar to 7 m(3)-sized reactor can transform similar to 1 x 10(3) tons/year of CO2 into 2.76 x 10(2) tons/year of DME.", 
  "author": [
    {
      "family": "Koybasi", 
      "given": " H. Hasan"
    }, 
    {
      "family": "Avci", 
      "given": " Ahmet K."
    }
  ], 
  "container_title": "INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH", 
  "id": "262343", 
  "issue": "30", 
  "issued": {
    "date-parts": [
      [
        2022, 
        1, 
        1
      ]
    ]
  }, 
  "page": "10846-10859", 
  "title": "Numerical Analysis of CO2-to-DME Conversion in a Membrane Microchannel Reactor", 
  "type": "article-journal", 
  "volume": "61"
}