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Free solvent oxidation of molecular benzyl alcohol by newly synthesized AuPd/titania catalysts

Oxidation of benzyl alcohol is one of the industrial reactions utilized to produce chlorine-free benzaldehyde. Interestingly, supported gold nanoparticle catalysts are efficient towards the oxidation reaction of alcohol without involving any solvents, hence following the terms of green technology. I...

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Asıl Yazarlar: Mohd JamJam, Norasidah, Yun Hin, Taufiq Yap, Muhamad, Ernee Noryana, Saiman, Mohd Izham, Saleh, Tawfik A.
Materyal Türü: Makale
Baskı/Yayın Bilgisi: Elsevier BV 2019
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spelling oai:psasir.upm.edu.my:79951 http://psasir.upm.edu.my/id/eprint/79951/ Free solvent oxidation of molecular benzyl alcohol by newly synthesized AuPd/titania catalysts Mohd JamJam, Norasidah Yun Hin, Taufiq Yap Muhamad, Ernee Noryana Saiman, Mohd Izham Saleh, Tawfik A. Oxidation of benzyl alcohol is one of the industrial reactions utilized to produce chlorine-free benzaldehyde. Interestingly, supported gold nanoparticle catalysts are efficient towards the oxidation reaction of alcohol without involving any solvents, hence following the terms of green technology. In this study, nanoparticles of bimetallic gold palladium supported on TiO2 were synthesized using the sol-immobilization method. The catalysts were structurally characterized using X-ray Diffraction (XRD), Transition Electron Microscopy (TEM), and Brunauer Emmett Teller (BET) instruments to get insight into the synergistic effect between both Au and Pd. The catalytic activities of the prepared catalysts were evaluated towards the oxidation of benzyl alcohol over tert-butyl hydroperoxide (TBHP). The results obtained from the catalytic evaluation of the prepared catalysts indicated that 0.5 wt% Au-0.5 wt% Pd/TiO2 is the best catalyst among other ratios with a 3.1 ± 0.8 nm particle size and the TEM results reveal the consistency value of a particle for each Ausingle bondPd ratio. The prepared catalyst consists of 0.50 wt% Au and 0.50 wt% Pd/TiO2 which exhibited remarkably enhanced catalytic activity (>19%) and selectivity of benzaldehyde (∼80%) when compared to another metal loading of the Ausingle bondPd catalyst. The reusability of the prepared catalyst was evaluated more than five times, and the results indicated minimal loss in activity where a low concentration of gold was leached (0.05 mg/L) under optimal reaction conditions. Elsevier BV 2019 Article PeerReviewed Mohd JamJam, Norasidah and Yun Hin, Taufiq Yap and Muhamad, Ernee Noryana and Saiman, Mohd Izham and Saleh, Tawfik A. (2019) Free solvent oxidation of molecular benzyl alcohol by newly synthesized AuPd/titania catalysts. Inorganic Chemistry Communications, 107. pp. 1-7. ISSN 1387-7003 https://www.sciencedirect.com/science/article/pii/S138770031930423X 10.1016/j.inoche.2019.107471
institution UPM IR
collection UPM IR
description Oxidation of benzyl alcohol is one of the industrial reactions utilized to produce chlorine-free benzaldehyde. Interestingly, supported gold nanoparticle catalysts are efficient towards the oxidation reaction of alcohol without involving any solvents, hence following the terms of green technology. In this study, nanoparticles of bimetallic gold palladium supported on TiO2 were synthesized using the sol-immobilization method. The catalysts were structurally characterized using X-ray Diffraction (XRD), Transition Electron Microscopy (TEM), and Brunauer Emmett Teller (BET) instruments to get insight into the synergistic effect between both Au and Pd. The catalytic activities of the prepared catalysts were evaluated towards the oxidation of benzyl alcohol over tert-butyl hydroperoxide (TBHP). The results obtained from the catalytic evaluation of the prepared catalysts indicated that 0.5 wt% Au-0.5 wt% Pd/TiO2 is the best catalyst among other ratios with a 3.1 ± 0.8 nm particle size and the TEM results reveal the consistency value of a particle for each Ausingle bondPd ratio. The prepared catalyst consists of 0.50 wt% Au and 0.50 wt% Pd/TiO2 which exhibited remarkably enhanced catalytic activity (>19%) and selectivity of benzaldehyde (∼80%) when compared to another metal loading of the Ausingle bondPd catalyst. The reusability of the prepared catalyst was evaluated more than five times, and the results indicated minimal loss in activity where a low concentration of gold was leached (0.05 mg/L) under optimal reaction conditions.
format Article
author Mohd JamJam, Norasidah
Yun Hin, Taufiq Yap
Muhamad, Ernee Noryana
Saiman, Mohd Izham
Saleh, Tawfik A.
spellingShingle Mohd JamJam, Norasidah
Yun Hin, Taufiq Yap
Muhamad, Ernee Noryana
Saiman, Mohd Izham
Saleh, Tawfik A.
Free solvent oxidation of molecular benzyl alcohol by newly synthesized AuPd/titania catalysts
author_facet Mohd JamJam, Norasidah
Yun Hin, Taufiq Yap
Muhamad, Ernee Noryana
Saiman, Mohd Izham
Saleh, Tawfik A.
author_sort Mohd JamJam, Norasidah
title Free solvent oxidation of molecular benzyl alcohol by newly synthesized AuPd/titania catalysts
title_short Free solvent oxidation of molecular benzyl alcohol by newly synthesized AuPd/titania catalysts
title_full Free solvent oxidation of molecular benzyl alcohol by newly synthesized AuPd/titania catalysts
title_fullStr Free solvent oxidation of molecular benzyl alcohol by newly synthesized AuPd/titania catalysts
title_full_unstemmed Free solvent oxidation of molecular benzyl alcohol by newly synthesized AuPd/titania catalysts
title_sort free solvent oxidation of molecular benzyl alcohol by newly synthesized aupd/titania catalysts
publisher Elsevier BV
publishDate 2019
_version_ 1819299631300870144
score 13.4562235

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