The catalytic oxidation of toluene at low temperature over palladium nanoparticles supported on Alumina sphere catalysts : effects of Palladium precursors and preparation method

• Autorzy: Pham Thien Huu , Than Ha An Quoc , Bui Ha Manh

Identyfikatory

DOI

10.2478/pjct-2019-0038

• Języki publikacji: EN

Abstrakty

EN

In this study, 1 wt.% Pd/Al2O3 sphere catalysts were prepared using the wet-impregnation (WI) and deposition-precipitation (DP) method using palladium chloride and tetraamminepalladium (II) nitrate as salt precursors. All catalysts were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and Fourier-transform infrared (FTIR) spectroscopy. The catalytic activity in toluene oxidation under gas-phase conditions was measured. The obtained results showed that metal dispersion and catalytic activity were strongly dependent on the salt precursor and method of catalyst preparation. The use of tetraamminepalladium (II) nitrate as the precursor presented smaller particle size, an enhanced dispersion and higher specific surface area. Moreover, the catalyst prepared with this precursor also showed higher catalytic activity than that prepared with palladium chloride. At 1 wt.% Pd loading, complete oxidation of toluene was achieved at 250°C. However, there was only approximately 80–90% efficient at the same temperature when the catalyst was prepared with palladium chloride as the precursor.

Słowa kluczowe

EN

Pd/ Al2O3 spheres; wet-impregnation; deposition-precipitation; catalytic oxidation

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2019
• Tom: Vol. 21, nr 4
• Strony: 48--50
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Pham Thien Huu

• Institute of Applied Materials Science – VAST, No 1A TL 29 St. Thanh Loc Ward, District 12, Ho Chi Minh City 700000, Vietnam

autor

Than Ha An Quoc

• Institute of Applied Materials Science – VAST, No 1A TL 29 St. Thanh Loc Ward, District 12, Ho Chi Minh City 700000, Vietnam

autor

Bui Ha Manh

• Department of Environmental Sciences, Saigon University, 273 An Duong Vuong St., District 5, Ho Chi Minh City 700000, Vietnam
• NTT Institute of High Technology, Nguyen Tat Thanh University, 300A Nguyen Tat Thanh Street, District 4, Ho Chi Minh City 700000, Vietnam

Bibliografia

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