Abstract
| Original language | English |
|---|---|
| Article number | 1900781 |
| Journal | Energy Technology |
| Number of pages | 10 |
| ISSN | 2194-4288 |
| DOIs | |
| Publication status | Accepted/In press - 2019 |
Keywords
- Adsorbent materials
- Biogas upgrading
- Electrospinning
- Zeolites
Cite this
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Highly Structured Nanofiber Zeolite Materials for Biogas Upgrading. / Zhang, Wenjing (Angela); Narang, Kritika; Simonsen, Søren Bredmose; Vinkel, Nadja Maria; Gudik-Sørensen, Mads; Han, Li; Akhtar, Farid; Kaiser, Andreas.
In: Energy Technology, 2019.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Highly Structured Nanofiber Zeolite Materials for Biogas Upgrading
AU - Zhang, Wenjing (Angela)
AU - Narang, Kritika
AU - Simonsen, Søren Bredmose
AU - Vinkel, Nadja Maria
AU - Gudik-Sørensen, Mads
AU - Han, Li
AU - Akhtar, Farid
AU - Kaiser, Andreas
PY - 2019
Y1 - 2019
N2 - Hierarchical zeolite composite nanofibers are designed using an electrospinning technique with post‐carbonization processing to form mechanically strong pellets for biogas upgrading. A ZSM‐5 nanopowder (zeolite) and a polyvinylpyrrolidone (PVP) polymer are electrospun to form ZSM/PVP composite nanofibers, which are transformed into a ZSM and carbon composite nanofiber (ZSM/C) by a two‐step heat treatment. The ZSM/C nanofibers show a 30.4% increase in Brunauer–Emmett–Teller (BET) surface area compared with the non‐structured ZSM‐5 nanopowder. Using ideal adsorbed solution theory, CO2‐over‐CH4 selectivity of 20 and CO2 uptake of 2.15 mmolg−1 at 293 K at 1 bar for ZSM/C nanofibers are obtained. For the efficient use of adsorbents in pressure swing adsorption operation, the nanofibers are structured into ZSM/C pellets that offer a maximum tensile strength of 6.46 MPa to withstand pressure swings. In the breakthrough tests, the CO2 uptake of the pellets reach 3.18 mmolg−1 at 293 K at 4 bar after 5 breakthrough adsorption–desorption cycles, with a much higher mass transfer coefficient of 1.24 ms−1 and CO2 uptake rate of 2.4 mg of CO2 g−1s−1, as compared with other structured zeolite adsorbents.
AB - Hierarchical zeolite composite nanofibers are designed using an electrospinning technique with post‐carbonization processing to form mechanically strong pellets for biogas upgrading. A ZSM‐5 nanopowder (zeolite) and a polyvinylpyrrolidone (PVP) polymer are electrospun to form ZSM/PVP composite nanofibers, which are transformed into a ZSM and carbon composite nanofiber (ZSM/C) by a two‐step heat treatment. The ZSM/C nanofibers show a 30.4% increase in Brunauer–Emmett–Teller (BET) surface area compared with the non‐structured ZSM‐5 nanopowder. Using ideal adsorbed solution theory, CO2‐over‐CH4 selectivity of 20 and CO2 uptake of 2.15 mmolg−1 at 293 K at 1 bar for ZSM/C nanofibers are obtained. For the efficient use of adsorbents in pressure swing adsorption operation, the nanofibers are structured into ZSM/C pellets that offer a maximum tensile strength of 6.46 MPa to withstand pressure swings. In the breakthrough tests, the CO2 uptake of the pellets reach 3.18 mmolg−1 at 293 K at 4 bar after 5 breakthrough adsorption–desorption cycles, with a much higher mass transfer coefficient of 1.24 ms−1 and CO2 uptake rate of 2.4 mg of CO2 g−1s−1, as compared with other structured zeolite adsorbents.
KW - Adsorbent materials
KW - Biogas upgrading
KW - Electrospinning
KW - Zeolites
U2 - 10.1002/ente.201900781
DO - 10.1002/ente.201900781
M3 - Journal article
JO - Energy Technology
JF - Energy Technology
SN - 2194-4288
M1 - 1900781
ER -