Removal of gaseous sulfur and phosphorus compounds by carbon-coated porous magnesium oxide composites

Anh Tuan Vu, Keon Ho, Chang-Ha Lee

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Carbon-coated porous magnesium oxide (MgO/C) composites were synthesized using an aerogel route for removal of dimethyl methylphosphonate (DMMP) and 2-chloroethyl ethyl sulfide (2-CEES) in dry and wet conditions. The sorption capacities of the as-prepared samples for DMMP (0.23μg/mL) and 2-CEES (0.26μg/mL) were evaluated by breakthrough experiments in nitrogen under ambient conditions. MgO/C composites exhibited a decrease in surface area with carbon content (648-723m2/g), but had a higher surface area than MgO. Under dry conditions, the sorption capacities of the MgO/C composite with a low carbon content of 6.39wt% (MgO/C-1; 67.8mg/g for DMMP and 35.3mg/g for 2-CEES) were higher than those of pure MgO and activated carbon (AC). The sorption capacity of MgO/C composites decreased with an increase in carbon content and became even lower than those of MgO and AC. Under humid conditions, the sorption capacities and breakthrough time of pure MgO decreased significantly and became lower than that of AC. In contrast, the sorption capacities of the MgO/C-1 composite for DMMP and 2-CEES under humid conditions remained at about 91 and 86% of those measured under dry conditions, and were higher than those of AC. In addition, the MgO/C composite remained reactive toward 2-CEES even under humid conditions. MgO/C composites were more stable than MgO under humid conditions because of the presence of carbon-coated shells.

Original languageEnglish
Pages (from-to)1234-1243
Number of pages10
JournalChemical Engineering Journal
Volume283
DOIs
Publication statusPublished - 2016 Jan 1

Fingerprint

Magnesium Oxide
Phosphorus Compounds
Phosphorus compounds
Sulfur Compounds
Sulfur compounds
Magnesia
magnesium
Carbon
sulfur
oxide
phosphorus
Sorption
sorption
carbon
Composite materials
Activated carbon
sulfide
activated carbon
surface area
Aerogels

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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title = "Removal of gaseous sulfur and phosphorus compounds by carbon-coated porous magnesium oxide composites",
abstract = "Carbon-coated porous magnesium oxide (MgO/C) composites were synthesized using an aerogel route for removal of dimethyl methylphosphonate (DMMP) and 2-chloroethyl ethyl sulfide (2-CEES) in dry and wet conditions. The sorption capacities of the as-prepared samples for DMMP (0.23μg/mL) and 2-CEES (0.26μg/mL) were evaluated by breakthrough experiments in nitrogen under ambient conditions. MgO/C composites exhibited a decrease in surface area with carbon content (648-723m2/g), but had a higher surface area than MgO. Under dry conditions, the sorption capacities of the MgO/C composite with a low carbon content of 6.39wt{\%} (MgO/C-1; 67.8mg/g for DMMP and 35.3mg/g for 2-CEES) were higher than those of pure MgO and activated carbon (AC). The sorption capacity of MgO/C composites decreased with an increase in carbon content and became even lower than those of MgO and AC. Under humid conditions, the sorption capacities and breakthrough time of pure MgO decreased significantly and became lower than that of AC. In contrast, the sorption capacities of the MgO/C-1 composite for DMMP and 2-CEES under humid conditions remained at about 91 and 86{\%} of those measured under dry conditions, and were higher than those of AC. In addition, the MgO/C composite remained reactive toward 2-CEES even under humid conditions. MgO/C composites were more stable than MgO under humid conditions because of the presence of carbon-coated shells.",
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Removal of gaseous sulfur and phosphorus compounds by carbon-coated porous magnesium oxide composites. / Vu, Anh Tuan; Ho, Keon; Lee, Chang-Ha.

In: Chemical Engineering Journal, Vol. 283, 01.01.2016, p. 1234-1243.

Research output: Contribution to journalArticle

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