1Laboratoire de Chimie du Gaz Naturel, Faculté de Chimie, Université des Sciences et de la Technologie Houari Boumediene (USTHB), BP 32, El-Alia, 16111 Bab-Ezzouar, Alger, Algeria
2Centre de Recherche Scientifique et Technique en Analyse Physico-chimique CRAPC, BP 384, Zone Industrielle Bou-Ismail, RP 42004 Tipaz, Algeria
3Laboratoire de Recherche de Chimie Appliquée et de Génie Chimique, Hasnaoua I, Université Mouloud Mammeri B.P.17 RP, 15000 Tizi-Ouzou, Algeria
BibTex Citation Data :
@article{BCREC2905, author = {Mohamed Guerroudj and Leila Dermeche and Lynda Mouheb and Tassadit Mazari and Siham Benadji and Chérifa Rabia}, title = {Preparation, Characterization, and Catalytic Activity of Tin (Antimony) Substituted and Lacunar Dawson Phosphotungstomolybdates for Synthesis of Adipic Acid}, journal = {Bulletin of Chemical Reaction Engineering & Catalysis}, volume = {14}, number = {2}, year = {2019}, keywords = {Dawson; polyoxometalate; adipic acid; cyclohexanone; cyclohexene}, abstract = { Tin (antimony) substituted and lacunar Dawson phosphotungstomolybdates (a1-K 10 P 2 W 12 Mo 5 ÿO 61 , a1-K 8 P 2 W 12 Mo 5 SnO 61 and a-Cs 4 SnP 2 W 12 Mo 6 O 62 ,and a-Cs 3 SbP 2 W 12 Mo 6 O 62 ) were synthesized and characterized by Fourier Transform Infra Red (FTIR), nuclear magnetic resonance ( 31 P NMR), Visible Ultra Violet (UV-Vis) spectroscopy, and X-ray diffraction (XRD). Their catalytic properties were examined in the oxidation reaction of cyclohexanone at 90 °C and that of cyclohexene at 70 °C to adipic acid (AA), in presence of hydrogen peroxide and in free solvent. The effects of catalyst/substrate molar ratios, hydrogene peroxide flow rate, heteropolysalt composition, and cyclohexanol addition on AA yields were studied. The Cs 4 SnP 2 W 12 Mo 6 O 62 (the most efficient) led to 61 % of AA yield from the cyclohexanone oxidation using a catalyst/substrate molar ratio of 13.3×10 -4 , H 2 O 2 flow rate of 0.5 mL/h, and a reaction time of 20 h. }, issn = {1978-2993}, pages = {283--293} doi = {10.9767/bcrec.14.2.2905.283-293}, url = {https://ejournal2.undip.ac.id/index.php/bcrec/article/view/2905} }
Refworks Citation Data :
Tin (antimony) substituted and lacunar Dawson phosphotungstomolybdates (a1-K10P2W12Mo5ÿO61, a1-K8P2W12Mo5SnO61 and a-Cs4SnP2W12Mo6O62,and a-Cs3SbP2W12Mo6O62) were synthesized and characterized by Fourier Transform Infra Red (FTIR), nuclear magnetic resonance (31P NMR), Visible Ultra Violet (UV-Vis) spectroscopy, and X-ray diffraction (XRD). Their catalytic properties were examined in the oxidation reaction of cyclohexanone at 90 °C and that of cyclohexene at 70 °C to adipic acid (AA), in presence of hydrogen peroxide and in free solvent. The effects of catalyst/substrate molar ratios, hydrogene peroxide flow rate, heteropolysalt composition, and cyclohexanol addition on AA yields were studied. The Cs4SnP2W12Mo6O62 (the most efficient) led to 61 % of AA yield from the cyclohexanone oxidation using a catalyst/substrate molar ratio of 13.3×10-4, H2O2 flow rate of 0.5 mL/h, and a reaction time of 20 h.
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