Atomic-Scale Aluminum Oxyfluoride-Confined Nanoporous Carbons for Exceptional Aging-Resistant Propylene/Propane Separation
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36 MATERIALS SCIENCE↗
Engineering topics
Hu, Leiqing
Publications and source records attributed to Hu, Leiqing.
Hierarchically porous and single Zn atom-embedded carbon molecular sieves for H2 separations
Abstract Hierarchically porous materials containing sub-nm ultramicropores with molecular sieving abilities and microcavities with high gas diffusivity may realize energy-efficient membranes for gas separations. However, rationally designing and constructing such pores into large-area membranes enabling efficient H 2 separations remains challenging. Here, we report the synthesis and utilization of hybrid carbon molecular sieve membranes with well-controlled nano- and micro-pores and single zinc atoms and clusters well-dispersed inside the nanopores via the carbonization of supramolecular mixed matrix materials containing amorphous and crystalline zeolitic imidazolate frameworks. Carbonization temperature is used to fine-tune pore sizes, achieving ultrahigh selectivity for H 2 /CO 2 (130), H 2 /CH 4 (2900), H 2 /N 2 (880), and H 2 /C 2 H 6 (7900) with stability against water vapor and physical aging during a continuous 120-h test.
42 ENGINEERING↗
Nanoengineering membrane surfaces: A new paradigm for efficient CO2 capture
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Hu, Leiqing↗