Performances, kinetics and mechanisms of catalytic oxidative desulfurization from oils

RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 103253-103269 ◽  
Author(s):  
Sainan Wei ◽  
Huijun He ◽  
Yan Cheng ◽  
Chunping Yang ◽  
Guangming Zeng ◽  
...  
Keyword(s):  
Air Quality ◽  
Oxidative Desulfurization ◽  
Deep Desulfurization ◽  
Catalytic Oxidative Desulfurization

Ultra-deep desulfurization technologies are critical for cleaner oils and consequent better air quality.

Synthesis of novel magnetic ionic liquids as high efficiency catalysts for extraction-catalytic oxidative desulfurization in fuel oil

2019 ◽  
Vol 43 (48) ◽  
pp. 19232-19241
Author(s):  
Tao Wang ◽  
Wen-hui Yu ◽  
Tan-xiangning Li ◽  
Yu-ting Wang ◽  
Jun-jun Tan ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
High Efficiency ◽  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Magnetic Ionic Liquids ◽  
Deep Desulfurization ◽  
Catalytic Oxidative Desulfurization

Deep desulfurization of magnetic ionic liquids [C4(mim)2]Cl2/2FeCl3.

scholarly journals New Gas-Phase Catalytic Oxidative Processes for Desulfurization of Diesel Fuel

2015 ◽  
Vol 17 (2) ◽  
pp. 119 ◽  
Author(s):  
Z.R. Ismagilov ◽  
M.A. Kerzhentsev ◽  
S.A. Yashnik ◽  
S.R. Khairulin ◽  
A.V. Salnikov ◽  
...  
Keyword(s):  
Gas Phase ◽  
Diesel Fuel ◽  
Ambient Pressure ◽  
Oxidative Desulfurization ◽  
Sulfur Compounds ◽  
Deep Desulfurization ◽  
Oxidative Processes ◽  
Laboratory Reactor ◽  
Sulfur Containing ◽  
Regeneration Processes

<p>An effective gas-phase oxidative desulfurization (ODS) process was proposed. The process was studied in a laboratory reactor with a proprietary catalyst at 300-400 ºС and ambient pressure with model fuels represented by thiophene, dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) dissolved in octane, isooctane or toluene. The reactivity of different sulfur containing molecules in ODS was shown to increase in the sequence: thiophene &lt; DBT &lt; DMDBT. The main sulfur containing product of oxidation of these compounds was SO<sub>2</sub>. During the gas-phase ODS both processes of sulfur species oxidation and processes of their adsorption were observed and studied. Based on the conducted studies, different ODS process designs comprising its integration with adsorption and regeneration processes and with conventional hydrodesulfurization (HDS) process were proposed. One scheme is based on alternating regimes of ODS and catalyst regeneration in two reactors: sulfur is removed from organic feedstock by oxidation and adsorption in one reactor while simultaneous regeneration of the catalyst that has accumulated sulfur  compounds takes place in another reactor. Two other schemes are based on joint use of ODS and HDS. The conventional HDS process is most effective for removal of low-boiling sulfur containing compounds reactive with respect to hydrogen, while removal of refractory sulfur compounds, such as DMDBT is more easily achieved by gas phase ODS. Thus the combination of these processes is expected to be most efficient for deep desulfurization of diesel fuel.</p>

Catalytic Oxidative Desulfurization of Fuel by H2O2 In Situ Produced via Oxidation of 2-Propanol

2012 ◽  
Vol 51 (13) ◽  
pp. 4868-4874 ◽  
Author(s):  
Hong-Xing Zhang ◽  
Jia-Jun Gao ◽  
Hong Meng ◽  
Ying-zhou Lu ◽  
Chun-Xi Li
Keyword(s):  
Oxidative Desulfurization ◽  
Catalytic Oxidative Desulfurization

Iron Oxide Catalyst for Oxidative Desulfurization of Model Diesel Fuel

2020 ◽  
Vol 1010 ◽  
pp. 418-423
Author(s):  
Nor Atiq Syakila Mohd Nazmi ◽  
Wan Nazwanie Wan Abdullah ◽  
Farook Adam ◽  
Wan Nur Aini Wan Mokhtar ◽  
Noor Fatimah Yahaya ◽  
...  
Keyword(s):  
Iron Oxide ◽  
New Technology ◽  
Oxidative Desulfurization ◽  
Impregnation Method ◽  
X Ray ◽  
Diesel Fuels ◽  
Extraction Solvent ◽  
Tert Butyl Hydroperoxide ◽  
Catalytic Oxidative Desulfurization ◽  
Model Diesel

— The catalytic oxidative desulfurization (Cat-ODS) process has been introduced as a new technology to achieve ultra-low sulphur levels in diesel fuels. In this study, the performance of the alumina supported iron oxide based catalysts doped with cobalt, synthesized via wet impregnation method on the Cat-ODS of the model diesel with the total sulphur 500ppm was investigated using tert-butyl hydroperoxide (TBHP) as an oxidizing agent and N,N-dimethylformamide as an extraction solvent. A series of dopant was being screened. Co/Fe-Al2O3 (10:90) and Co/Fe-Al2O3 (20:80) prepared at 400°C. Overall, the catalytic activity decreased as dopant ratio increased. Catalyst with 10 wt% of Co was successfully removed 96% of thiophene, 100% of DBT and 92% of 4,6-DMDBT in model diesel. Further investigation, potential catalyst that calcined at 400°C contributed higher sulphur removal compared to the catalyst calcined at 500°C. X-ray diffraction analysis (XRD) result showed that Co/Fe-Al2O3 (10:90) prepared at 400°C was amorphous, while micrograph of the field emission scanning electron microscopy (FESEM) illustrated an inhomogeneous distribution of various particle sizes. The energy dispersive X-ray analysis (EDX) result have confirmed the presence of Fe and Co in all of the prepared catalyst.

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