In situ and downstream sulfidation reactivity of PbO and ZnO during pyrolysis and hydrogenation of a high–sulfur lignite

Kanca, Arzu; Üner, Deniz

doi:10.1016/j.ijhydene.2018.10.041

Cited by 5 publications

(2 citation statements)

References 51 publications

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“…The outcomes approve above supposition that persulfate anions could be directly activated by photogenerated electrons into sulfate radicals. Moreover, Ag (5%)/Pb 3 O 4 may transform sulfate anions into sulfate radicals through the way of photogenerated holes ( Kanca and Uner, 2018 ). It provides other oxidants for nitrobenzene oxidation.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic degradation of nitrobenzene in wastewater by persulfate integrated with Ag/Pb3O4 semiconductor under visible light irradiation

Chen

Liu

2021

Heliyon

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Nitrobenzene oxidation was executed utilizing an innovative method, in which Ag/Pb 3 O 4 semiconductors irradiated by visible light were used for activation of persulfate into sulfate radicals. Batch mode experiments were accomplished to elucidate the effect of persulfate concentrations and Ag/Pb 3 O 4 dosages on the nitrobenzene oxidation behaviors. The physicochemical properties of original and reacted Ag/Pb 3 O 4 were illustrated by X-ray diffraction analyses, UV-Vis diffuse reflectance spectra, FE-SEM images, EDS analyses, photoluminescence spectra and X-ray photoelectron spectra, respectively. The main oxidant was hypothesized to be sulfate radicals, induced from persulfate caused by photocatalysis of Ag/Pb 3 O 4 . It was clearly reflected on the scavenging experiments with addition of benzene, ethanol and methanol individually. As far as degradation pathways concerned, nitrobenzene was essentially transformed into hydroxycyclohexadienyl radicals, and sequentially converted to 2-nitrophenol, 3-nitrophenol or 4-nitrophenol simultaneously. Denitration of nitrophenols gave rise to synthesis of phenol, followed with generation of hydroquinone and p -benzoquinone.

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Section: Resultsmentioning

confidence: 99%

Photocatalytic degradation of nitrobenzene in wastewater by persulfate integrated with Ag/Pb3O4 semiconductor under visible light irradiation

Chen

Liu

2021

Heliyon

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“…Coal samples were obtained from Turkish Coal Enterprises (TKI) Tuncbilek Lignite Establishment in Turkey. The details of sample preparation and characterization were explained in our previous papers (Kanca, Dodd, Reimer, & Uner, 2016;Kanca & Uner, 2019).…”

Section: Preparation and Characterization Of Coal Samplementioning

confidence: 99%

Oxygen Transfer Ability of Co-Pb Metal Oxides during the Chemical Looping Oxidation of Tuncbilek Lignite

Kanca¹,

Üner²

2020

European Journal of Science and Technology

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The study aims to determine the oxygen transfer ability of cobalt lead (Co-Pb) mixed oxides during the thermal decomposition of Tuncbilek lignite under inert atmosphere. Thermodynamic calculations of reduction reactions of Co-Pb mixed oxides were performed to show the favorable reduction temperatures for the different reductive gases. Co and Pb mixed metal oxides were prepared by wet impregnation method and they characterized by X-ray diffractometer and Raman spectroscopy. Oxygen transfer performances of these oxides were evaluated by thermal gravimetric analysis (TGA) in terms of oxidation rates of lignite sample under N2 flows in the range of temperatures between 40 to 600ºC. The results of thermal gravimetric analysis (TGA) indicated that the optimum coal to Co-Pb metal oxides ratio based on oxidation efficiency was 0.11.

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Sulfidation performance of unsupported and SBA 15-supported Ca-based mixed metal oxides

Kanca,

Alpsoy,

Ata

2023

International Journal of Hydrogen Energy

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In situ and downstream sulfidation reactivity of PbO and ZnO during pyrolysis and hydrogenation of a high–sulfur lignite

Cited by 5 publications

References 51 publications

Photocatalytic degradation of nitrobenzene in wastewater by persulfate integrated with Ag/Pb3O4 semiconductor under visible light irradiation

Photocatalytic degradation of nitrobenzene in wastewater by persulfate integrated with Ag/Pb3O4 semiconductor under visible light irradiation

Oxygen Transfer Ability of Co-Pb Metal Oxides during the Chemical Looping Oxidation of Tuncbilek Lignite

Sulfidation performance of unsupported and SBA 15-supported Ca-based mixed metal oxides

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