Selective adsorption of thiophenic compounds from fuel over TiO2/SiO2 under UV-irradiation

Miao, Guang; Ye, Feiyan; Wu, Ling; Ren, Xiang; Xiao, Jing; Li, Zhong; Wang, Haihui

doi:10.1016/j.jhazmat.2015.07.027

Cited by 47 publications

(22 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to its strong oxidizing powder, cost-effective, and long-term stability against photo and chemical corrosion, TiO 2 has been used widely in water purification technology [1][2][3][4] However, the practical applications of TiO 2 are limited by its large band gap (3.2 eV), which can only active under the UV light irradiation [5][6][7] . Therefore, several strategies have been developed to shift the optical sensitivity of TiO 2 from UV to the visible-light region for the efficient use of solar energy, such as element doping, metal deposition, surface sensitization, and coupling of composite semiconductors [8][9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

Effect of calcination temperature on structural properties and photocatalytic activity of Mn-C-codoped TiO2

et al. 2016

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Effect of calcination temperature on structural properties and photocatalytic activity of Mn-C-codoped TiO2

et al. 2016

View full text Add to dashboard Cite

“…Intended to further remove adsorbed species, i.e., sulfoxides/sulfones, thiophenic compounds, fuel compositions, residue of the polar solvent of acetonitrile on the spent Ag X O@SBA-15, the adsorbent was regenerated by an acetonitrile wash followed with oxidative air treatment (Ren et al 2016;Miao et al 2015). Figure 2 shows the desulfurization uptakes of the 15% Ag X O@SBA-15 in 4 consecutive RADS-regeneration cycles.…”

Section: Adsorbent Regenerationmentioning

confidence: 99%

Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel

Miao

et al. 2018

Pet. Sci.

Self Cite

View full text Add to dashboard Cite

Adsorbent regeneration is critical for a continuous adsorption-regeneration process and often underestimated. In this work, the regeneration of bifunctional Ag X O@SBA-15 for [O]-induced reactive adsorptive desulfurization of liquid fuel is reported and further investigated. The spent Ag X O@SBA-15 was regenerated in various types of solvents followed by calcination and tested in multiple desulfurization-regeneration cycles. The effects of regenerate solvents were also compared systematically. The original and regenerated Ag X O@SBA-15 was characterized by X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectroscopy, N 2 adsorption, X-ray photoelectron spectroscopy and atomic absorption spectrometry. The recovery of desulfurization capacity using various solvents follows the order of acetonitrile [ acetone [ ethanol [ methanol [ water. Owing to the complete reduction of silver species to Ag 0 and severe agglomeration of Ag 0 , the bifunctional Ag X O@SBA-15 demonstrating [ 85% (2.60 mg-S/g) of sulfur removal dramatically reduced to \ 46% (1.56 mg-S/g) after only 1st-cycle regeneration. It is suggested that polar organic species strongly adsorbed (or residual) on the spent Ag X O@SBA-15, in that case, after solvent wash may contribute to the accelerated decomposition of Ag ? to Ag 0 in the following calcination step. The desulfurization capacity decreased rather mildly in the later regeneration runs. Cautious choice of regeneration conditions and strategies to rational design stabilized adsorbents is required to avert the adsorbent deactivation.

show abstract

“…Research shows that there are several other methods ( Figure 2) for obtaining ultra-low sulfur fuel, which are alternatives to HDS, such as biodesulfurization [14][15][16], selective adsorption [17,18], and catalytic oxidative desulfurization [2,3,19,20]. However, these alternative methods are still in the development stage.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review on Catalytic Oxidative Desulfurization of Liquid Fuel Oil

2019

View full text Add to dashboard Cite

The production of green fuel oil is of the utmost importance for maintaining a healthy life and environment in the current world. Effective and complete removal of sulfur refractory compounds (such as 4,6-dimethyldibenzothiophene and other alkyl-substituted thiophene derivatives) from fuel oil is essential to meet the new requirements of sulfur standards. Several techniques have been proposed for desulfurization of fuel oil, such as hydrodesulfurization (HDS), selective adsorption, extractive distillation, biodesulfurization, and oxidative desulfurization (ODS). The removal of sulfur by the HDS process requires higher investment costs, high reaction temperature (up to 400 °C), and high pressure (up to 100 atm) reactors. On the other hand, studies have shown that the ODS process is remarkably successful in the removal of sulfur under mild reaction conditions. This review article presents a comparative analysis of various existing catalytic oxidation techniques: acetic acid/formic acid catalytic oxidation, heteropolyacid (HPA) catalytic oxidation, ionic liquid catalytic oxidation, molecular sieve catalytic oxidation, polyoxometalates catalytic oxidation, titanium catalytic oxidation, and ultrasound-assisted oxidation systems, as well as discusses research gaps, and proposes important recommendations for future challenges.

show abstract

Selective adsorption of thiophenic compounds from fuel over TiO2/SiO2 under UV-irradiation

Cited by 47 publications

References 39 publications

Effect of calcination temperature on structural properties and photocatalytic activity of Mn-C-codoped TiO2

Effect of calcination temperature on structural properties and photocatalytic activity of Mn-C-codoped TiO2

Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel

A Comprehensive Review on Catalytic Oxidative Desulfurization of Liquid Fuel Oil

Contact Info

Product

Resources

About