TY - JOUR
T1 - Xenon Recovery by DD3R Zeolite Membranes
T2 - Application in Anaesthetics
AU - Wang, Xuerui
AU - Zhang, Yuting
AU - Wang, Xiaoyu
AU - Andres-Garcia, Eduardo
AU - Du, Peng
AU - Giordano, Lorena
AU - Wang, Lin
AU - Hong, Zhou
AU - Gu, Xuehong
AU - Murad, Sohail
AU - Kapteijn, Freek
PY - 2019
Y1 - 2019
N2 - Xe is only produced by cryogenic distillation of air, and its availability is limited by the extremely low abundance. Therefore, Xe recovery after usage is the only way to guarantee sufficient supply and broad application. Herein we demonstrate DD3R zeolite as a benchmark membrane material for CO2/Xe separation. The CO2 permeance after an optimized membrane synthesis is one order magnitude higher than for conventional membranes and is less susceptible to water vapour. The overall membrane performance is dominated by diffusivity selectivity of CO2 over Xe in DD3R zeolite membranes, whereby rigidity of the zeolite structure plays a key role. For relevant anaesthetic composition (<5 % CO2) and condition (humid), CO2 permeance and CO2/Xe selectivity stabilized at 2.0×10−8 mol m−2 s−1 Pa−1 and 67, respectively, during long-term operation (>320 h). This endows DD3R zeolite membranes great potential for on-stream CO2 removal from the Xe-based closed-circuit anesthesia system. The large cost reduction of up to 4 orders of magnitude by membrane Xe-recycling (>99+%) allows the use of the precious Xe as anaesthetics gas a viable general option in surgery.
AB - Xe is only produced by cryogenic distillation of air, and its availability is limited by the extremely low abundance. Therefore, Xe recovery after usage is the only way to guarantee sufficient supply and broad application. Herein we demonstrate DD3R zeolite as a benchmark membrane material for CO2/Xe separation. The CO2 permeance after an optimized membrane synthesis is one order magnitude higher than for conventional membranes and is less susceptible to water vapour. The overall membrane performance is dominated by diffusivity selectivity of CO2 over Xe in DD3R zeolite membranes, whereby rigidity of the zeolite structure plays a key role. For relevant anaesthetic composition (<5 % CO2) and condition (humid), CO2 permeance and CO2/Xe selectivity stabilized at 2.0×10−8 mol m−2 s−1 Pa−1 and 67, respectively, during long-term operation (>320 h). This endows DD3R zeolite membranes great potential for on-stream CO2 removal from the Xe-based closed-circuit anesthesia system. The large cost reduction of up to 4 orders of magnitude by membrane Xe-recycling (>99+%) allows the use of the precious Xe as anaesthetics gas a viable general option in surgery.
KW - carbon dioxide
KW - gas separation
KW - membranes
KW - noble gases
KW - zeolites
UR - http://www.scopus.com/inward/record.url?scp=85073182954&partnerID=8YFLogxK
U2 - 10.1002/anie.201909544
DO - 10.1002/anie.201909544
M3 - Article
C2 - 31452313
AN - SCOPUS:85073182954
SN - 1433-7851
VL - 58
SP - 15518
EP - 15525
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 43
ER -