Journal
MOLECULAR CATALYSIS
Volume 440, Issue -, Pages 96-106Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mcat.2017.07.010
Keywords
Metal-organic framework; Magnetic nanoparticles; Heteropolyacid; Phthalazine-trione
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Funding
- Research Councils of Shahid Beheshti
- Hakim Sabzevari Universities
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A magnetic inorganic-organic catalyst, PTA@Fe3O4/EN-MIL-101 (EN = ethylenediamine, PTA = phosphotungstic acid) was fabricated and characterized by XRD, HRTEM, FESEM, UV-vis, TGA-DTA, FT-IR, XPS and porosimetry. PTA retained the parent Keggin structure upon dispersion throughout the amine-functionalized chromium terephthalate metal-organic framework, over which magnetic Fe3O4 nanoparticles were previously introduced. The resulting composite heterogeneous solid acid was an active catalyst for the one-pot synthesis of diverse 2H-indazolo[2,1-b] phthalazine-triones in good -> excellent yields under mild, solventless condition, and offers facile separation and excellent recyclability. (C) 2017 Elsevier B.V. All rights reserved.
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