Synthesis of Na+-gated nanochannel membranes for the ammonia (NH3) separation

Surya Padinjarekutt; Bratin Sengupta; Huazheng Li; Kaleb Friedman; Dinesh Behera; Rumwald Lecaros; Miao Yu

doi:10.1016/j.memsci.2023.121512

Synthesis of Na⁺-gated nanochannel membranes for the ammonia (NH₃) separation

Surya Padinjarekutt
, Bratin Sengupta
, Huazheng Li
, Kaleb Friedman
, Dinesh Behera
, Rumwald Lecaros
, Miao Yu

Department of Chemical and Biological Engineering

Rensselaer Polytechnic Institute
SUNY Buffalo

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Na⁺-gated nanochannel membranes were synthesized on α-Al₂O₃ supports by secondary growth for ammonia (NH₃) separation from a mixture gas containing NH₃, hydrogen (H₂) and nitrogen (N₂) at high temperature and pressure. The effects of synthesis parameters (number of seeding steps, aging time, synthesis time, and Si/Al ratio) on membrane properties were investigated by characterization and gas permeation testing. Under the optimized condition (two-time seeding, 8 h aging time, 5 h synthesis time, and gel composition of 1.05 Al₂O₃: 5 SiO₂: 50 Na₂O: 100 H₂O), the best membranes achieved NH₃/H₂ and NH₃/N₂ selectivities of 328 ± 60 and 1106 ± 207, respectively at 200 °C and 21 bar. Separation performance of the membrane was shown to be highly dependent on the permeances of N₂ and H₂, which were greatly influenced by the membrane quality.

Original language	English
Article number	121512
Journal	Journal of Membrane Science
Volume	674
DOIs	https://doi.org/10.1016/j.memsci.2023.121512
State	Published - May 15 2023

Keywords

Ammonia (NH) separation
Haber-bosch (HB) process
High pressure
High temperature
Na-gated nanochannel membrane

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10.1016/j.memsci.2023.121512

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@article{32aba61ac6ef4e4399f9648b70851328,

title = "Synthesis of Na+-gated nanochannel membranes for the ammonia (NH3) separation",

abstract = "Na+-gated nanochannel membranes were synthesized on α-Al2O3 supports by secondary growth for ammonia (NH3) separation from a mixture gas containing NH3, hydrogen (H2) and nitrogen (N2) at high temperature and pressure. The effects of synthesis parameters (number of seeding steps, aging time, synthesis time, and Si/Al ratio) on membrane properties were investigated by characterization and gas permeation testing. Under the optimized condition (two-time seeding, 8 h aging time, 5 h synthesis time, and gel composition of 1.05 Al2O3: 5 SiO2: 50 Na2O: 100 H2O), the best membranes achieved NH3/H2 and NH3/N2 selectivities of 328 ± 60 and 1106 ± 207, respectively at 200 °C and 21 bar. Separation performance of the membrane was shown to be highly dependent on the permeances of N2 and H2, which were greatly influenced by the membrane quality.",

keywords = "Ammonia (NH) separation, Haber-bosch (HB) process, High pressure, High temperature, Na-gated nanochannel membrane",

author = "Surya Padinjarekutt and Bratin Sengupta and Huazheng Li and Kaleb Friedman and Dinesh Behera and Rumwald Lecaros and Miao Yu",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = may,

day = "15",

doi = "10.1016/j.memsci.2023.121512",

language = "English",

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TY - JOUR

T1 - Synthesis of Na+-gated nanochannel membranes for the ammonia (NH3) separation

AU - Padinjarekutt, Surya

AU - Sengupta, Bratin

AU - Li, Huazheng

AU - Friedman, Kaleb

AU - Behera, Dinesh

AU - Lecaros, Rumwald

AU - Yu, Miao

PY - 2023/5/15

Y1 - 2023/5/15

N2 - Na+-gated nanochannel membranes were synthesized on α-Al2O3 supports by secondary growth for ammonia (NH3) separation from a mixture gas containing NH3, hydrogen (H2) and nitrogen (N2) at high temperature and pressure. The effects of synthesis parameters (number of seeding steps, aging time, synthesis time, and Si/Al ratio) on membrane properties were investigated by characterization and gas permeation testing. Under the optimized condition (two-time seeding, 8 h aging time, 5 h synthesis time, and gel composition of 1.05 Al2O3: 5 SiO2: 50 Na2O: 100 H2O), the best membranes achieved NH3/H2 and NH3/N2 selectivities of 328 ± 60 and 1106 ± 207, respectively at 200 °C and 21 bar. Separation performance of the membrane was shown to be highly dependent on the permeances of N2 and H2, which were greatly influenced by the membrane quality.

AB - Na+-gated nanochannel membranes were synthesized on α-Al2O3 supports by secondary growth for ammonia (NH3) separation from a mixture gas containing NH3, hydrogen (H2) and nitrogen (N2) at high temperature and pressure. The effects of synthesis parameters (number of seeding steps, aging time, synthesis time, and Si/Al ratio) on membrane properties were investigated by characterization and gas permeation testing. Under the optimized condition (two-time seeding, 8 h aging time, 5 h synthesis time, and gel composition of 1.05 Al2O3: 5 SiO2: 50 Na2O: 100 H2O), the best membranes achieved NH3/H2 and NH3/N2 selectivities of 328 ± 60 and 1106 ± 207, respectively at 200 °C and 21 bar. Separation performance of the membrane was shown to be highly dependent on the permeances of N2 and H2, which were greatly influenced by the membrane quality.

KW - Ammonia (NH) separation

KW - Haber-bosch (HB) process

KW - High pressure

KW - High temperature

KW - Na-gated nanochannel membrane

UR - https://www.scopus.com/pages/publications/85150471524

U2 - 10.1016/j.memsci.2023.121512

DO - 10.1016/j.memsci.2023.121512

M3 - Article

AN - SCOPUS:85150471524

SN - 0376-7388

VL - 674

JO - Journal of Membrane Science

JF - Journal of Membrane Science

M1 - 121512

ER -

Synthesis of Na⁺-gated nanochannel membranes for the ammonia (NH₃) separation

Abstract

Keywords

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