H3PW12O40 encapsulation by nanoporous metal organic framework HKUST-1: Synthesis, characterization, activity and stability
Hybrid composite material was obtained through encapsulation of H3PW12O40 (PW) into HKUST-1 (Cu3(BTC)2, BTC=1,3,5-benzenetricarboxylic acid). The catalyst was characterized by various techniques including powder X-ray diffraction, Fourier transform infrared (FT-IR), scanning electron microscopy (SEM...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Slovenian Chemical Society
2016-04-01
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| Series: | Acta Chimica Slovenica |
| Subjects: | |
| Online Access: | https://journals.matheo.si/index.php/ACSi/article/view/2236 |
| Summary: | Hybrid composite material was obtained through encapsulation of H3PW12O40 (PW) into HKUST-1 (Cu3(BTC)2, BTC=1,3,5-benzenetricarboxylic acid). The catalyst was characterized by various techniques including powder X-ray diffraction, Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), laser particle size analyzer. The acidity of the catalyst was determined by chemisorption of pyridine and potentiometric titration. This nano catalyst was successfully used for the synthesis of various β-keto enol ethers and was easily recycled and reused several times without significant loss of its activity. The presence of the PW in PW/HKUST-1 and reused PW/HKUST-1 structure, eliminating any doubt about collapse of the HKUST-1 after catalytic reaction and can be followed by FT-IR, XRD and SEM techniques. Brönsted and Lewis acidity of the PW/HKUST-1 catalyst was distinguished by studying the FT-IR. The strength and dispersion of the protons on PW/HKUST-1 was considerably high and active surface protons became more available for reactant. |
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| ISSN: | 1318-0207 1580-3155 |