TY - JOUR
T1 - Annealing and TMOS coating on PSF/ZTC mixed matrix membrane for enhanced CO2/ CH4 and H2/CH4 separation
AU - Widiastuti, Nurul
AU - Caralin, Irmariza Shafitri
AU - Widyanto, Alvin Rahmad
AU - Wijiyanti, Rika
AU - Gunawan, Triyanda
AU - Karim, Zulhairun Abdul
AU - Nomura, Mikihiro
AU - Yoshida, Yuki
N1 - Publisher Copyright:
© 2022 Royal Society Publishing. All rights reserved.
PY - 2022/6/22
Y1 - 2022/6/22
N2 - Recently, natural gas (mostly methane) is frequently used as fuel, while hydrogen is a promising renewable energy source. However, each gas produced contains impurity gases. As a result, membrane separation is required. The mixed matrix membrane (MMM) is a promising membrane. The huge surface area and well-defined pore structure of zeolite templated carbon (ZTC)-based MMM allow for effective separation. However, the interfacial vacuum in MMM is difficult to avoid, contributing to poor separation performance. This research tries to improve separation performance by altering membrane surfaces. MMM PSF/ZTC was modified by annealing at 120, 150, and 190°C; coating using 0.01, 0.03, and 0.05 mol tetramethyl orthosilicate (TMOS); and a combination of both, i.e. annealing at 190°C and coating using 0.03 mol TMOS. MMM PSF/ZTC successfully significantly improved CO2/CH4 selectivity by a combination of annealing at 190°C and coating 0.03 mol TMOS from 1.37 to 5.90 (331%), and H2/CH4 selectivity by coating with 0.03 mol TMOS from 4.58 to 65.76 (1378%). The enhancement of selectivity was due to structural changes to the membrane that became denser and smoother, which SEM and AFM observed. In this study, annealing and coating treatments are the methods investigated for improving the polymer matrix and filler particle adhesion.
AB - Recently, natural gas (mostly methane) is frequently used as fuel, while hydrogen is a promising renewable energy source. However, each gas produced contains impurity gases. As a result, membrane separation is required. The mixed matrix membrane (MMM) is a promising membrane. The huge surface area and well-defined pore structure of zeolite templated carbon (ZTC)-based MMM allow for effective separation. However, the interfacial vacuum in MMM is difficult to avoid, contributing to poor separation performance. This research tries to improve separation performance by altering membrane surfaces. MMM PSF/ZTC was modified by annealing at 120, 150, and 190°C; coating using 0.01, 0.03, and 0.05 mol tetramethyl orthosilicate (TMOS); and a combination of both, i.e. annealing at 190°C and coating using 0.03 mol TMOS. MMM PSF/ZTC successfully significantly improved CO2/CH4 selectivity by a combination of annealing at 190°C and coating 0.03 mol TMOS from 1.37 to 5.90 (331%), and H2/CH4 selectivity by coating with 0.03 mol TMOS from 4.58 to 65.76 (1378%). The enhancement of selectivity was due to structural changes to the membrane that became denser and smoother, which SEM and AFM observed. In this study, annealing and coating treatments are the methods investigated for improving the polymer matrix and filler particle adhesion.
KW - annealing
KW - coating
KW - gas separation
KW - mixed matrix membrane
KW - polysulfone-zeolite templated carbon
UR - http://www.scopus.com/inward/record.url?scp=85134028174&partnerID=8YFLogxK
U2 - 10.1098/rsos.211371
DO - 10.1098/rsos.211371
M3 - Article
AN - SCOPUS:85134028174
SN - 2054-5703
VL - 9
JO - Royal Society Open Science
JF - Royal Society Open Science
IS - 6
M1 - 211371
ER -