Journal article Open Access

Soft templating production of porous carbon adsorbents for CO2 and H2S capture

Nicolae Sabina Alexandra; Szilágyi Petra Ágota; Titirici Maria Magdalena


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{
  "DOI": "10.1016/j.carbon.2020.07.064", 
  "author": [
    {
      "family": "Nicolae Sabina Alexandra"
    }, 
    {
      "family": "Szil\u00e1gyi Petra \u00c1gota"
    }, 
    {
      "family": "Titirici Maria Magdalena"
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2020, 
        8, 
        5
      ]
    ]
  }, 
  "abstract": "<p>We report the influence of structural features on the properties of porous carbonaceous materials obtained using soft-templating coupled with hydrothermal carbonisation. Our results demonstrate that using <em>d-</em>glucose with Pluronic P123 results in a more homogeneous particle size distribution of carbon spheres compared with <em>d-</em>fructose. The textural properties of the carbon materials, both surface area and pore volume, have improved when the carbonisation temperature was increased from 550 &deg;C to 900 &deg;C, while the amount of C=C bonds was also increased. Physical activation with CO<sub>2</sub> was found to open the pores and thereby improve textural properties, including total pore volume, micropore volume, and surface area. Concomitantly, the CO<sub>2</sub> and H<sub>2</sub>S uptake also underwent significant enhancement, achieving a maximum CO<sub>2 </sub>adsorption capacity of 8.37 mmol/g at 0 &deg;C and 1 bar, and <em>ca.</em> 6 mmol/g at room temperature and 1 bar. The same samples showed about 25.7 mmol/g adsorption capacity for H<sub>2</sub>S at room temperature and atmospheric pressure, with approximately 32% process efficiency.</p>", 
  "title": "Soft templating production of porous carbon adsorbents for CO2 and H2S capture", 
  "type": "article-journal", 
  "id": "3972757"
}
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