TY - JOUR
T1 - Overcoming Crystallinity Limitations of Aluminium Metal-Organic Frameworks by Oxalic Acid Modulated Synthesis
AU - Canossa, Stefano
AU - Gonzalez-Nelson, Adrian
AU - Shupletsov, Leonid
AU - del Carmen Martin, Maria
AU - Van der Veen, Monique A.
PY - 2020
Y1 - 2020
N2 - A modulated synthesis approach based on the chelating properties of oxalic acid (H2C2O4) is presented as a robust and versatile method to achieve highly crystalline Al-based metal-organic frameworks. A comparative study on this method and the already established modulation by hydrofluoric acid was conducted using MIL-53 as test system. The superior performance of oxalic acid modulation in terms of crystallinity and absence of undesired impurities is explained by assessing the coordination modes of the two modulators and the structural features of the product. The validity of our approach was confirmed for a diverse set of Al-MOFs, namely X-MIL-53 (X=OH, CH3O, Br, NO2), CAU-10, MIL-69, and Al(OH)ndc (ndc=1,4-naphtalenedicarboxylate), highlighting the potential benefits of extending the use of this modulator to other coordination materials.
AB - A modulated synthesis approach based on the chelating properties of oxalic acid (H2C2O4) is presented as a robust and versatile method to achieve highly crystalline Al-based metal-organic frameworks. A comparative study on this method and the already established modulation by hydrofluoric acid was conducted using MIL-53 as test system. The superior performance of oxalic acid modulation in terms of crystallinity and absence of undesired impurities is explained by assessing the coordination modes of the two modulators and the structural features of the product. The validity of our approach was confirmed for a diverse set of Al-MOFs, namely X-MIL-53 (X=OH, CH3O, Br, NO2), CAU-10, MIL-69, and Al(OH)ndc (ndc=1,4-naphtalenedicarboxylate), highlighting the potential benefits of extending the use of this modulator to other coordination materials.
KW - aluminium
KW - chelates
KW - crystal growth
KW - metal-organic frameworks
KW - modulated synthesis
UR - http://www.scopus.com/inward/record.url?scp=85080985263&partnerID=8YFLogxK
U2 - 10.1002/chem.201904798
DO - 10.1002/chem.201904798
M3 - Article
AN - SCOPUS:85080985263
SN - 0947-6539
VL - 26
SP - 3564
EP - 3570
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 16
ER -