Abstract
The shaping of metal-organic frameworks (MOFs) has become increasingly studied over the past few years, because it represents a major bottleneck toward their further applications at a larger scale. MOF-based macroscale solids should present performances similar to those of their powder counterparts, along with adequate mechanical resistance. Three-dimensional printing is a promising technology as it allows the fast prototyping of materials at the macroscale level; however, the large amounts of added binders have a detrimental effect on the porous properties of the solids. Herein, a 3D printer was modified to prepare a variety of MOF-based solids with controlled morphologies from shear-thinning inks containing 2-hydroxyethyl cellulose. Four benchmark MOFs were tested for this purpose: HKUST-1, CPL-1, ZIF-8, and UiO-66-NH2. All solids are mechanically stable with up to 0.6 MPa of uniaxial compression and highly porous with BET specific surface areas lowered by 0 to -25%. Furthermore, these solids were applied to high-pressure hydrocarbon sorption (CH4, C2H4, and C2H6), for which they presented a consequent methane gravimetric uptake (UiO-66-NH2, ZIF-8, and HKUST-1) and a highly preferential adsorption of ethylene over ethane (CPL-1).
Original language | English (US) |
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Pages (from-to) | 10983-10992 |
Number of pages | 10 |
Journal | ACS Applied Materials and Interfaces |
Volume | 12 |
Issue number | 9 |
DOIs | |
State | Published - Mar 4 2020 |
Bibliographical note
Funding Information:This work is supported by grants from National Natural Science Foundation of China (21774071) and Natural Science Foundation of Shaanxi University of Science and Technology (2017QNBJ-07). W. Z. thanks the support from the Youth Hundred-Talent Program of Shaanxi Province (SXBR9227), the National High-Level Foreign Expert Project (GDT20186100425) and Biomass Chemistry and Materials Acadamician Workstation Project in SUST (134090002).
Publisher Copyright:
Copyright © 2020 American Chemical Society.
Keywords
- 3D printing
- ethane/ethylene separation
- ink formulation
- metal-organic frameworks
- methane storage
ASJC Scopus subject areas
- General Materials Science