Highly Structured Nanofiber Zeolite Materials for Biogas Upgrading

Wenjing (Angela) Zhang*, Kritika Narang, Søren Bredmose Simonsen, Nadja Maria Vinkel, Mads Gudik-Sørensen, Li Han, Farid Akhtar, Andreas Kaiser

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

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.
Original languageEnglish
Article number1900781
JournalEnergy Technology
Number of pages10
ISSN2194-4288
DOIs
Publication statusAccepted/In press - 2019

Keywords

  • Adsorbent materials
  • Biogas upgrading
  • Electrospinning
  • Zeolites

Cite this

Zhang, Wenjing (Angela) ; Narang, Kritika ; Simonsen, Søren Bredmose ; Vinkel, Nadja Maria ; Gudik-Sørensen, Mads ; Han, Li ; Akhtar, Farid ; Kaiser, Andreas. / Highly Structured Nanofiber Zeolite Materials for Biogas Upgrading. In: Energy Technology. 2019.
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abstract = "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.",
keywords = "Adsorbent materials, Biogas upgrading, Electrospinning, Zeolites",
author = "Zhang, {Wenjing (Angela)} and Kritika Narang and Simonsen, {S{\o}ren Bredmose} and Vinkel, {Nadja Maria} and Mads Gudik-S{\o}rensen and Li Han and Farid Akhtar and Andreas Kaiser",
year = "2019",
doi = "10.1002/ente.201900781",
language = "English",
journal = "Energy Technology",
issn = "2194-4288",
publisher = "Wiley - V C H Verlag GmbH & Co. KGaA",

}

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 journalJournal articleResearchpeer-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 -