TY - JOUR
T1 - Tailor-Made Microporous Metal–Organic Frameworks for the Full Separation of Propane from Propylene Through Selective Size Exclusion
AU - Wang, Hao
AU - Dong, Xinglong
AU - Colombo, Valentina
AU - Wang, Qining
AU - Liu, Yanyao
AU - Liu, Wei
AU - Wang, Xin Long
AU - Huang, Xiao Ying
AU - Proserpio, Davide M.
AU - Sironi, Angelo
AU - Han, Yu
AU - Li, Jing
N1 - Funding Information:
The authors would like to thank the financial support from the Materials Sciences and Engineering Division, Office of Basic Research Energy Sciences of the U.S. Department of Energy under Grant No. DE-FG02-08ER-46491 for the synthesis, characterization, and single-component adsorption work. Y.H. acknowledges the KAUST CCF fund for the breakthrough experiments. The RU team would also like to acknowledge Micromeritics Instrument Corp. for the award of a 3Flex system through its Instrument Grant program. V.C thanks the University of Milan for partial funding through the Development Plan of Athenaeum grant.
PY - 2018/12/6
Y1 - 2018/12/6
N2 - Adsorptive separation of olefin/paraffin mixtures by porous solids can greatly reduce the energy consumption associated with the currently employed cryogenic distillation technique. Here, the complete separation of propane and propylene by a designer microporous metal–organic framework material is reported. The compound, Y6(OH)8(abtc)3(H2O)6(DMA)2 (Y-abtc, abtc = 3,3′,5,5′-azobenzene-tetracarboxylates; DMA = dimethylammonium), is rationally designed through topology-guided replacement of inorganic building units. Y-abtc is both thermally and hydrothermally robust, and possesses optimal pore window size for propane/propylene separation. It adsorbs propylene with fast kinetics under ambient temperature and pressure, but fully excludes propane, as a result of selective size exclusion. Multicomponent column breakthrough experiments confirm that polymer-grade propylene (99.5%) can be obtained by this process, demonstrating its true potential as an alternative sorbent for efficient separation of propane/propylene mixtures.
AB - Adsorptive separation of olefin/paraffin mixtures by porous solids can greatly reduce the energy consumption associated with the currently employed cryogenic distillation technique. Here, the complete separation of propane and propylene by a designer microporous metal–organic framework material is reported. The compound, Y6(OH)8(abtc)3(H2O)6(DMA)2 (Y-abtc, abtc = 3,3′,5,5′-azobenzene-tetracarboxylates; DMA = dimethylammonium), is rationally designed through topology-guided replacement of inorganic building units. Y-abtc is both thermally and hydrothermally robust, and possesses optimal pore window size for propane/propylene separation. It adsorbs propylene with fast kinetics under ambient temperature and pressure, but fully excludes propane, as a result of selective size exclusion. Multicomponent column breakthrough experiments confirm that polymer-grade propylene (99.5%) can be obtained by this process, demonstrating its true potential as an alternative sorbent for efficient separation of propane/propylene mixtures.
KW - adsorbents
KW - adsorptive separation
KW - metal–organic frameworks
KW - molecular sieving
KW - olefin/paraffin separation
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U2 - 10.1002/adma.201805088
DO - 10.1002/adma.201805088
M3 - Article
C2 - 30368929
AN - SCOPUS:85055723798
VL - 30
JO - Advanced Materials
JF - Advanced Materials
SN - 0935-9648
IS - 49
M1 - 1805088
ER -