A novel process for gasoline desulfurization based on extraction with ionic liquids and reduction by sodium borohydride

Shu, Chenhua; Sun, Tonghua; Zhang, Hongbo; Jia, Jinping; Liu, Ziyang

doi:10.1016/j.fuel.2013.12.037

Cited by 47 publications

(23 citation statements)

References 42 publications

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“…For example, it was shown that the extraction of sulfur compounds using room temperature ionic liquids could significantly reduce energy consumption [3][4][5]. Due to the ability to uniformly change from vapor-like to liquidlike densities, supercritical fluids (SCFs) act as powerful solvents and their properties can be tuned easily by changing the temperature or pressure or by addition of co-solvents [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Monte Carlo simulations of phase behavior and microscopic structure for supercritical CO2 and thiophene mixtures

Zeng

Moghadam

et al. 2014

The Journal of Supercritical Fluids

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Section: Introductionmentioning

confidence: 99%

“…Black, red, green, blue, cyan, magenta, and dark yellow correspond to4.145 MPa, 5.975 MPa, 6.986 MPa, 8.061 MPa, 9.118 MPa, 11.023 MPa and 13.933 MPa, respectively.…”

mentioning

confidence: 99%

Monte Carlo simulations of phase behavior and microscopic structure for supercritical CO2 and thiophene mixtures

Zeng

Moghadam

et al. 2014

The Journal of Supercritical Fluids

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“…Among these, oxidative desulfurization, which operates under mild conditions without requiring hydrogen, is regarded as the promising and economical process [15]. This process is used to convert thiophene, benzenethiophene, dibenzothiophene and 4,6-dimethyldibenzothiophene into sulfones and sulfoxides in presence of oxidizing agent and sulfones and sulfoxides are easily separated by extraction with polar solvent [16][17][18][19]. The ODS process widely studied in various systems, such as organic acid [20], heteropolyoxo-metalates [21], ionic liquid [22,23], molecular sieve [24,25] and photocatalysts [26], heteropoly acid (HPA) catalysts [27][28][29], HPA catalysts, especially those having the keggin structure, have been determined to be very effective for the oxidation of sulfur containing compounds in a liquid-liquid two phase system.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Performance of Ammonium Salt of Molybdenum Heteropoly Acid Supported Silica for Oxidative Desulfurization of Benzothiophene, Dibenzothiophene and 4,6-Dimethyldibenzothiophene in Model Oil

Pant¹,

Thakur²,

Lal³

2017

Asian J. Chem.

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An ammonium salt of molybdenum heteropoly acid was loaded on silica support (HPA-SiO2), used as catalyst in oxidative desulfurization for removing benzothiophene (BT), dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT) from model oil. The structural properties of prepared catalyst were studied by using various analytical techniques; Fourier transforms infrared spectroscopy , X-ray diffraction, scanning electron microscopy and thermogravimetric analysis. The results showed that the ammonium salt of molybdenum heteropoly acid highly dispersed on SiO2. The final catalyst exhibits good catalytic activity of oxidative desulfurization. The 94.6 % of thiophene compounds of the model oil were removed under optimal conditions; temperature at 80 °C, reaction time 100 min. The oxidation is decreased in order of DBT > 4,6-DMDBT > BT.

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“…The notion of recovering nutrients other than sulphur from the leachate of biofilters is not new (Dumont et al 2012a;Jung et al 2005;Rabbani et al 2015;Rabbani et al 2016;Zhang et al 2013). Removal and recovery of elemental sulphur from coal, natural gas and high sulphur crude oils is well-recognised processes, but recovery of sulphur from dilute streams of acid from wastewater treatment plants has not been previously attempted (Babich and Moulijn 2003;Bachmann et al 2014;Jiang et al 2015;Meshram et al 2015;Shu et al 2014). Dilute sulphuric acid solutions produced in industry are concentrated by energy-intensive processes using high-temperature conversion of acid to sulphur dioxide and subsequent catalytic conversion of sulphur dioxide to concentrated sulphuric acid (Smith and Mantius 1978).…”

Section: Introductionmentioning

confidence: 99%

Biofilter for generation of concentrated sulphuric acid from H2S

Rabbani

Charles

Kayaalp

et al. 2016

Environ Sci Pollut Res

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Biofilters are used for the conversion of odorous hydrogen sulphide to odourless sulphate in wastewater treatment plants under the right conditions of moisture and pH. One of the consequences of maintaining the suitable pH and moisture content is the production of large volumes of weakly acidic leachate. This paper presents a biofilter with a maximum H2S elimination capacity of 16.3 g m −3 h −1 and removal efficiency greater than 95 % which produces small volumes (1 mL of solution L −1 of reactor day −1 ) of sulphuric acid with a concentration greater than 5.5 M after 150 days of continuous operation. The concentrated sulphuric acid was produced by intermittently trickling a minimum amount of nutrient solution down the upflow biofilter which created a moisture and pH gradient within the biofilter resulting in an environment at the top for the bacterial conversion of H2S, while sulphuric acid was accumulated at the base. Genetic diversity profiling of samples taken from different sections of the biofilter confirms that the upper sections of the biofilter had the best environment for the bacteria to convert H2S to sulphate. The formation of concentrated sulphuric acid presents an opportunity for the recovery of sulphur from the waste stream as a usable product.

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A novel process for gasoline desulfurization based on extraction with ionic liquids and reduction by sodium borohydride

Cited by 47 publications

References 42 publications

Monte Carlo simulations of phase behavior and microscopic structure for supercritical CO2 and thiophene mixtures

Monte Carlo simulations of phase behavior and microscopic structure for supercritical CO2 and thiophene mixtures

Catalytic Performance of Ammonium Salt of Molybdenum Heteropoly Acid Supported Silica for Oxidative Desulfurization of Benzothiophene, Dibenzothiophene and 4,6-Dimethyldibenzothiophene in Model Oil

Biofilter for generation of concentrated sulphuric acid from H2S

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