Photocatalytic oxidation of dibenzothiophenes in acetonitrile using TiO2: effect of hydrogen peroxide and ultrasound irradiation

Matsuzawa, Sadao; Tanaka, Jun; Sato, Shinya; Ibusuki, Takashi

doi:10.1016/s1010-6030(02)00004-7

Cited by 154 publications

(91 citation statements)

References 23 publications

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“…Since the world is moving towards sustainable approach, utilization of the free and abundant sunlight for solar photocatalytic process (An'amt et al 2014;Khalik et al 2015) would be attractive. One of the promising processes is photooxidative desulfurization using titania, TiO 2 to remove heterocyclic sulfur compounds such as benzothiophenes (AbdelWahab & Gaber 1998;Matsuzawa et al 2002) and dibenzothiophenes (Abdel-Wahab & Gaber 1998;Tao et al 2009) from fuel (Abdel-Wahab & Gaber 1998;Matsuzawa et al 2002) and kerosene (Tao et al 2009) in the presence of oxidizing agent. TiO 2 , is a semiconductor photocatalyst which shows high activity under ultraviolet rays only.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Mg/TiO2 for Visible Light Photooxidative-Extractive Deep Desulfurization

Yee¹,

Kait²,

Fatimah³

et al. 2017

JSM

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Mg/TiO2 for Visible Light Photooxidative-Extractive Deep Desulfurization

Yee¹,

Kait²,

Fatimah³

et al. 2017

JSM

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“…Scientific efforts focus on oxidation [1,2], photoxidation [3,4] or adsorption . The adsorption based methods applied activated alumina [7,8], zeolites [9], and activated carbons [7,[10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] as adsorbents.…”

Section: Introductionmentioning

confidence: 99%

“…

AbstractAdsorptive removal of dibenzothiophene (DBT) and 4, from model diesel fuel with 20 ppmw total concentration of sulfur was investigated on polymerderived carbons with incorporated heteroatoms of oxygen, sulfur and phosphorus. The materials before and after exposure to model diesel fuel were characterized using adsorption of nitrogen, thermal analysis, potentiometric titration, XPS and elemental analysis.

…”

mentioning

confidence: 99%

Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process

Seredych

Wu²,

Brender

et al. 2012

Fuel

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Adsorptive removal of dibenzothiophene (DBT) and 4, from model diesel fuel with 20 ppmw total concentration of sulfur was investigated on polymerderived carbons with incorporated heteroatoms of oxygen, sulfur and phosphorus. The materials before and after exposure to model diesel fuel were characterized using adsorption of nitrogen, thermal analysis, potentiometric titration, XPS and elemental analysis. The selectivities for DBT and DMDBT adsorption were calculated with reference to naphthalene. The results indicated that the presence of phosphorus, especially in the form of pyrophosphates and P 2 O 5 , increases the capacity and selectivity for removal of dibenzothiophenes. It also affects the adsorption mechanism. Phosphorus suppresses oxidation reactions of DBT and DMDBT. Owing to a possible location of bulky phosphorus groups in pore with sizes between 10-30 Å thiophenic molecules are strongly adsorbed there via dispersive forces. Acidic environment also enhances adsorption via acid-base interactions. Physical adsorption mechanism and stability of surface make these carbons attractive candidates for thermal regeneration.

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“…As reported by Matsuzawa et al [22], DBT and 4,6-DMDBT in acetonitrile are photooxidized to 5-oxide (sulfoxide) and 5,5-dioxide (sulfone) using TiO 2 . The application of this photochemical oxidation to desulfurization as been realized in some literatures [22,23] using oil-water and oil-polar solvent two phase systems.…”

Section: Introductionmentioning

confidence: 80%

“…The application of this photochemical oxidation to desulfurization as been realized in some literatures [22,23] using oil-water and oil-polar solvent two phase systems. The desulfurization of light oil to a sulfur content of less than 0.05 wt% has been achieved successfully.…”

Section: Introductionmentioning

confidence: 99%

PREPARATION AND CHARACTERIZATION OF Cu-Fe/TiO2 PHOTOCATALYST FOR VISIBLE LIGHT DEEP DESULFURIZATION

Kait¹

2016

MJAS

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A photooxidative system for deep desulfurization of model diesel fuel was explored. Nanoparticles of anatase titania (TiO 2 ) were synthesized via sol-gel hydrothermal method. The TiO 2 was further modified with bimetallic Cu-Fe using wet-impregnation method followed by calcination process in order to extend the activity region of the photocatalyst to visible-light. A series of bimetallic 2.2 wt% Cu-Fe/TiO 2 photocatalysts with different Cu:Fe mass compositions were characterized for their physical, chemical and optical properties using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), diffuse reflectance UV-visible spectroscopy (DR-UV-Vis), Fourier Transform Infrared Spectroscopy (FTIR) and Brunauer-Emmett-Teller (BET) surface area analysis. The performance of the photocatalysts was evaluated for photooxidation of dibenzothiophene (DBT) as the sulfur species from model oil in the presence of hydrogen peroxide, H 2 O 2 under 500 W visible light illumination. The highest sulfur conversion of 82.36 % was observed for photocatalyst with 10:1 Cu:Fe mass composition.Keywords: photocatalyst, titania, oxidation, desulfurization, visible light, copper-iron Abstrak Sistem fotopengoksidaan untuk proses nyahsulfur daripada model minyak diesel dikaji. Nanopartikel titania (TiO 2 ) dengan fasa anatas disediakan menggunakan kaedah hidrotermal sol-gel. Pengubahsuaian dengan dwilogam Cu-Fe dilakukan terhadap TiO 2 menggunakan kaedah impregnasi basah diikuti dengan proses pengkalsinan untuk melanjutkan aktiviti fotokatalis ke bahagian cahaya tampak. Siri fotokatalis dwilogam 2.2 wt% Cu-Fe/TiO 2 dengan komposisi jisim Cu:Fe yang berlainan dicirikan untuk menentukan sifat-sifat fizikal, kimia dan optik menggunakan pembelauan sinar-X (XRD), pemancaran medan mikroskopi imbasan elektron (FESEM), mikroskopi transmisi elecktron beresolusi tinggi (HRTEM), spektroskopi pantulan resapan ultraungu-tampak (DR-UV-Vis), spektroskopi transformasi Fourier inframerah (FTIR) dan analisis luas permukaan BrunauerEmmett-Teller (BET). Kajian terhadap fotopengoksidaan dibenzothiophene (DBT) sebagai spesis sulfur di dalam model minyak menggunakan fotokatalis tersebut dilakukan dalam kehadiran hidrogen peroksida, H 2 O 2 di bawah sinaran cahaya tampak 500 W. Prestasi tertinggi penukaran sulfur yang tercapai adalah 82.36 %, daripada fotokatalis yang mempunyai komposisi jisim untuk Cu:Fe sebanyak 10:1.

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Photocatalytic oxidation of dibenzothiophenes in acetonitrile using TiO2: effect of hydrogen peroxide and ultrasound irradiation

Cited by 154 publications

References 23 publications

Preparation and Characterization of Mg/TiO2 for Visible Light Photooxidative-Extractive Deep Desulfurization

Preparation and Characterization of Mg/TiO2 for Visible Light Photooxidative-Extractive Deep Desulfurization

Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process

PREPARATION AND CHARACTERIZATION OF Cu-Fe/TiO2 PHOTOCATALYST FOR VISIBLE LIGHT DEEP DESULFURIZATION

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