Deep desulfurization of model diesel by extraction with N,N-dimethylformamide: Optimization by Box–Behnken design

Mokhtar, Wan Nur Aini Wan; Bakar, Wan Azelee Wan Abu; Ali, Rusmidah; Kadir, Abdul Aziz Abdul

doi:10.1016/j.jtice.2014.03.017

Cited by 91 publications

(46 citation statements)

References 19 publications

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“…It can be seen from Fig. 7a and b that the points are structureless and randomly scattered which indicated that all the information are well extracted and the residuals are independent of other variables [40][41][42][43]. In addition, all the points lie within the top outlier (+3.5) and bottom outlier (À3.5) detection limits, which implied that the response transformation is appropriate and successful in capturing the correlation between the four studied parameters influencing both the HDO and ISO of oleic acid into paraffinic biofuel [40,43].…”

Section: Regression Model Validationmentioning

confidence: 91%

“…9.24 for model Y and 8.84 for model Z). The Model F-value is 77.77 and 15.30 for the response function Y and Z, respectively, and these values implied that the models are significant and there is less than 0.01% probability that Model F-values this large could occur due to model error or noise, although it may be associated to experimental error [40][41][42].…”

Section: Regression Model Development and Analysismentioning

confidence: 99%

“…For model analysis, values of ''Prob > F'' less than 0.05 indicate model terms are significant [42]. In the case of HDO process A, B, C, D, A 2 , B 2 , C 2 , D 2 , AB, AC, AD, BC, BD are significant model terms.…”

Section: Regression Model Development and Analysismentioning

confidence: 99%

See 2 more Smart Citations

Optimization of catalytic hydrodeoxygenation of oleic acid into biofuel using fluoroplatinum oxalate zeolite supported catalyst

Ayodele

Daud

2015

Journal of the Taiwan Institute of Chemical Engineers

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Section: Regression Model Validationmentioning

confidence: 91%

Section: Regression Model Development and Analysismentioning

confidence: 99%

See 1 more Smart Citation

Optimization of catalytic hydrodeoxygenation of oleic acid into biofuel using fluoroplatinum oxalate zeolite supported catalyst

Ayodele

Daud

2015

Journal of the Taiwan Institute of Chemical Engineers

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“…The effectiveness of desulfurization depends on the correct solvent selection, the chemical activity of the components being removed, and other factors including environmental and toxicological aspects. The most commonly used solvents for the extraction of desulfurization of diesel fuel are N,N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), acetonitrile [6,7], N-methylpyrrolidone [8], and polyethylene glycol [9].…”

Section: Introductionmentioning

confidence: 99%

Extractants Based on Coordinating Liquid Polar Solvents for Removal of Sulfur Compounds from Diesel Fuels

Skorohodova¹,

Andrienko²,

Marakina³

et al. 2018

Preprint

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To remove sulfur-containing compounds (SCC) from the diesel fraction 200-360 °C extraction systems have been created based on coordinating organic solvents -dimethylformamide and dimethylsulfoxide and chlorides (CoCl2, CuCl2, CdCl2, MnCl2 and CrCl3) and metal trifluoroacetates (Co (TFA)2, Cu(TFA)2 and Mn(TFA)2). Using PMR spectroscopy the coordination of chloride and metal trifluoroacetate on the oxygen atom in the carbonyl group of DMFA was shown to redistribute electron density in the solvent molecule and to enhance properties of the acceptor center localized on the nitrogen atom. The removal of sulfur-containing compounds from the diesel fraction proceeded under mild conditions -at the temperature of 25 °C and atmospheric pressure. The degree of SCC removal from the diesel fraction in 30 minutes extraction was more than 90%. The interaction of organic solvents with metal salts and sulfur-containing compounds of the diesel fraction was considered within the framework of the concept of "hard and soft acids and bases" (HSAB). The most complete SCC extraction was carried out by "DMFA -Mn(TFA)2, MnCl2 and CrCl3 systems, that was probably connected with the implementation of the" hard base -hard acid "system.

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“…Such side reactions can lead to a decrease in the octane number of gasoline (Nie et al 2006;Wang et al 2007). Therefore, from both environmental and economic considerations, various alternative deep desulfurization processes have been extensively developed in the past few years, including adsorptive and complexation desulfurization (Mansouri et al 2014;Sevignon et al 2005;Shi et al 2015), biodesulfurization (Boshagh et al 2014;Fernandez et al 2014), extractive desulfurization (Mokhtar et al 2014;Domanska et al 2014;Krolikowski et al 2013), and oxidative desulfurization (ODS) followed by extraction (Zhang et al 2013;Ma et al 2014). …”

Section: Introductionmentioning

confidence: 99%

Efficient desulfurization of gasoline fuel using ionic liquid extraction as a complementary process to adsorptive desulfurization

Nejad

Beigi

2015

Pet. Sci.

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The extractive desulfurization of a model gasoline containing several alkyl thiols and aromatic thiophenic compounds was investigated using two imidazolium-based ionic liquids (ILs), 1-butyl-3-methylimidazolium tetrachloroaluminate, and 1-octyl-3-methylimidazolium tetrafluoroborate, as extractants. A fractional factorial design of experiments was employed to evaluate the effects and possible interactions of several process variables. Analysis of variance tests indicated that the number of extraction steps and the IL/gasoline volume ratio were of statistically highly significant, but none of the interactions were significant. The results showed that the desulfurization efficiency of the model gasoline by the ILs could reach 95.2 % under the optimal conditions. The optimized conditions were applied to study the extraction of thiophenic compounds in model gasoline and several real gasoline samples; the following order was observed in their separation: benzothiophene [ thiophene [ 3-methylthiophene [ 2-methylthiophene, with 96.1 % removal efficiency for benzothiophene. The IL extraction was successfully applied as a complementary process to the adsorptive desulfurization with activated Raney nickel and acetonitrile solvent. The results indicated that the adsorptive process combined with IL extraction could provide high efficiency and selectivity, which can be regarded as a promising energy efficient desulfurization strategy for production of low-sulfur gasoline.

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Deep desulfurization of model diesel by extraction with N,N-dimethylformamide: Optimization by Box–Behnken design

Cited by 91 publications

References 19 publications

Optimization of catalytic hydrodeoxygenation of oleic acid into biofuel using fluoroplatinum oxalate zeolite supported catalyst

Optimization of catalytic hydrodeoxygenation of oleic acid into biofuel using fluoroplatinum oxalate zeolite supported catalyst

Extractants Based on Coordinating Liquid Polar Solvents for Removal of Sulfur Compounds from Diesel Fuels

Efficient desulfurization of gasoline fuel using ionic liquid extraction as a complementary process to adsorptive desulfurization

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