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Solvent‐Free Encapsulation at High Pressure with Carboxylate‐Based MOFs
Author(s) -
MonteagudoOlivan Rebeca,
Paseta Lorena,
Potier Grégory,
LópezRamdeViu Pilar,
Coronas Joaquín
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800985
Subject(s) - chemistry , carboxylate , thermogravimetry , metal organic framework , encapsulation (networking) , adsorption , kojic acid , chemical engineering , organic chemistry , inorganic chemistry , computer network , tyrosinase , computer science , engineering , enzyme
The solvent‐free encapsulation of caffeine and kojic acid was carried out in different carboxylate‐based MOFs [MIL‐53(Al), UiO‐66 and Mg‐MOF‐74] by high pressure (0.32 GPa) contact. This methodology enables fast and ecofriendly encapsulation and gives rise to additive@MOFs with physical and features equivalent to those of materials obtained by common liquid phase encapsulation processes. It could be applied to other host–guest systems, simplifying the procedures, reducing the use and waste of harmful chemicals, and approaching the conditions of interest in the industry. The characterization carried out by thermogravimetry, X‐ray diffraction, N 2 adsorption, and 13 C NMR provided information about the presence and conformation of the additives in the MOFs. The highest encapsulation values for caffeine (37 %) and kojic acid (32 %) were obtained with MIL‐53(Al).