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Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
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Finely Tuned Porous Coordination Polymers To Boost Methane Separation Efficiency.
Yang Wang1, Qiubing Dong1, Haifei Cao1
1State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|April 10, 2019
Summary
New porous coordination polymers (PCPs) with hourglass nanochannels show high efficiency for separating ethane/methane and ethylene/methane. This breakthrough offers energy-saving gas separation potential.
Area of Science:
- Materials Science
- Chemical Engineering
- Nanotechnology
Background:
- Energy-efficient gas separation is crucial for industrial processes.
- Pressure/Volume Swing Adsorption (PSA/VSA) requires adsorbents with high breakthrough efficiency and weak host-guest interactions.
- Designing porous materials with specific channel structures is key to optimizing adsorption performance.
Purpose of the Study:
- To design and synthesize novel Fe- and Co-based porous coordination polymers (PCPs) for efficient gas separation.
- To investigate the structure-property relationships governing adsorption and separation performance.
- To evaluate the potential of these PCPs for energy-saving gas separation applications.
Main Methods:
- Synthesis of Fe- and Co-based porous coordination polymers (PCPs) utilizing T-shaped ligands with shifted methyl groups.
- Characterization of the resulting PCPs, focusing on their nanochannel structures (hourglass-shaped).
- Gas adsorption and breakthrough experiments to evaluate separation efficiency for C2H6/CH4 and C2H4/CH4 mixtures.
- In situ IR spectroscopy to investigate the role of aromatic sites in adsorption.
Main Results:
- Two groups of Fe- and Co-based PCPs with hourglass nanochannels were successfully synthesized.
- NTU-30 demonstrated significant breakthrough efficiency for C2H6/CH4 and C2H4/CH4 separations.
- High selectivity was achieved, with approximately 1.0 g CH4 per gram of NTU-30 from C2H6/CH4 and 0.6 g CH4 from C2H4/CH4 at ambient temperature.
- The positive influence of aromatic sites within NTU-30 on adsorption was confirmed via in situ IR studies.
Conclusions:
- The designed Fe- and Co-based PCPs, particularly NTU-30, are promising adsorbents for energy-saving gas separation.
- The hourglass nanochannel structure and specific interactions contribute to high separation efficiency.
- Further investigation into the role of aromatic sites could lead to enhanced adsorbent design for selective gas capture.
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