The Experts below are selected from a list of 138 Experts worldwide ranked by ideXlab platform
Jinping Jia - One of the best experts on this subject based on the ideXlab platform.
-
a novel Desulfurization process of gasoline via sodium metaborate electroreduction with pulse voltage using a boron doped diamond thin film electrode
Fuel, 2013Co-Authors: Chenhua Shu, Tonghua Sun, Jinping Jia, Ziyang LouAbstract:Abstract A novel Desulfurization process of gasoline was realized via sodium metaborate (NaBO 2 ) electroreduction with pulse voltage using a boron-doped diamond (BDD) thin film electrode under mild conditions. The results of cyclic voltammetry and 11 boron (B) nuclear magnetic resonance (NMR) confirmed that NaBO 2 was converted into sodium borohydride (NaBH 4 ) by electroreduction and the electroreduction voltage ranged from −1.2 V to −1.8 V. The factors that influenced Desulfurization efficiency were investigated and the Desulfurization efficiency reached more than 95% for model gasoline and more than 97% for real gasoline. The components of model gasolines before and after Desulfurization were analyzed by gas chromatography/mass spectrometer (GC/MS) and the elements content of electrolytes and digestion solution of precipitate were determined by inductively coupled plasma (ICP). Results indicated that Reductive Desulfurization process mainly involved the cleavage of C–S bond and the hydrogenation of C–C double bond and B recycle was realized at the same time as Desulfurization. Consequently, possible Desulfurization mechanism was proposed. Desulfurization kinetics showed a pseudo-first-order toward thiophene or benzothiophene. All these results indicated that the gasoline Desulfurization process via sodium metaborate electroreduction with pulse voltage using a BDD thin film electrode was feasible.
-
mild process for Reductive Desulfurization of diesel fuel using sodium borohydride in situ generated via sodium metaborate electroreduction
Industrial & Engineering Chemistry Research, 2013Co-Authors: Chenhua Shu, Tonghua Sun, Jinping Jia, Ziyang LouAbstract:A novel integrated process was proposed for Reductive Desulfurization of diesel fuel, in which the reductant sodium borohydride (NaBH4) was in situ generated via sodium metaborate (NaBO2) electroreduction. In order to improve the conversion rate of BO2– into BH4–, NaBO2 electroreduction was fulfilled by applying pulse voltage and using a boron-doped diamond (BDD) thin film electrode. The NaBO2 electroreduction process was analyzed by cyclic voltammetry and 11boron nuclear magnetic resonance (11B NMR) and the factors that influenced Desulfurization efficiency were investigated. Under the optimal conditions Desulfurization efficiency reached more than 93% for model diesel fuel. The components of model diesel fuel after Desulfurization were analyzed by gas chromatography/mass spectrometry (GC/MS) and the electrolyte and digestion solution of precipitate were analyzed by inductively coupled plasma (ICP). Results indicated that B recycle was realized at the same time as Desulfurization. Finally, the desulfuriz...
-
recent advances of sodium borohydride reduction in coal water slurry Desulfurization integration of chemical and electrochemical reduction
RSC Advances, 2012Co-Authors: Yafei Shen, Xunyue Liu, Tonghua Sun, Jinping JiaAbstract:Clean fuel technologies have been widely developed in current society because fuel combustion can directly bring about the emission of hazardous gasses, i.e. SO2, sulfate particulate matter (SPM), resulting in environmental pollution and other related problems that endanger public heath and community property; as well as reducing the life of the engine due to corrosion. The research efforts for developing conventional hydroDesulfurization (HDS) and alternative Desulfurization methods such as selective adsorption, bioDesulfurization, oxidation/extraction (oxidative Desulfurization), etc. for removing these refractory sulfur compounds from liquid fuel products are on the rise. The Reductive Desulfurization method under ambient conditions has rarely been researched. This paper reviews the current status of various desulphurization techniques being studied worldwide. It presents an overview of novel emerging technologies of chemical and electrochemical reduction (CECR) for deep Desulfurization of coal water slurry (CWS) so as to provide a new way of thinking about ultra-clean fuel technology.
-
innovative Desulfurization process of coal water slurry under atmospheric condition via sodium metaborate electroreduction in the isolated slot
Energy & Fuels, 2011Co-Authors: Yafei Shen, Tonghua Sun, Xueli Yang, Jinping JiaAbstract:This electrochemical Reductive Desulfurization (ERD) method for coal water slurry (CWS), which was an offshoot of the research Novel Desulfurization Method of Sodium Borohydride Reduction for Coal Water Slurry (Shen, Y. F.; Sun, T. H.; Jia, J. P. Energy Fuels 2011, 25, 2963–2967.), utilized cathodic reduction to change some chemical compounds into strong reducing substances that convert various forms of sulfur (S) in coal into H2S and S2–, thus releasing S from coals. It was an effective way to enhance S removal from coal by adding divalent metal catalysts (Ni2+, Mn2+, etc.). Using the atmospheric conditions of 12 g/L of NaBO2, 3.0 V of electrolytic voltage, 4 h of electrolytic time, 50 g/L of CWS, ≤140 mesh of coal particle size, 1.0 g/L of NaOH, and 1 mM (about 0.13 g/L) of NiCl2 catalyst, the total sulfur (TS) of CWS can be dramatically reduced by 58.5%. The ERD described here was a predominant Desulfurization process, such as mild (slight improvement of the combustion characteristics), high desulfuriz...
Manabu Node - One of the best experts on this subject based on the ideXlab platform.
-
a raney nickel sodium hypophosphite combination system for Reductive Desulfurization without racemization of optically active secondary alcohol
Tetrahedron, 1997Co-Authors: Manabu Node, Kiyoharu Nishide, Yukihiro Shigeta, Kenichi Obata, Hiroaki Shiraki, Hideaki KunishigeAbstract:Abstract Sulfides and sulfoxides bearing an optically active secondary alcohol were desulfurized with a Raney nickel (W-2)-sodium hypophosphite combination system to give optically active alcohols in high yields without racemization . However, the combination system was not effective with sulfides which comprise an alkylthio group and the corresponding sulfoxides. This system exhibited the Reductive Desulfurization of benzylthio or phenylthio ether in the presence of a benzyl ether.
-
Reductive Desulfurization using the raney nickel sodium hypophosphite combination system without racemization of a secondary alcohol
Tetrahedron Letters, 1996Co-Authors: Kiyoharu Nishide, Yukihiro Shigeta, Kenichi Obata, T Inoue, Manabu NodeAbstract:Abstract Thioethers bearing an optically active secondary alcohol were desulfurized with Raney nickel — sodium hypophosphite — acetate buffer system to give optically active alcohols without racemization in high yields. This Raney nickel combination system exhibited a unique Desulfurization of benzylthio or phenylthio group in the presence of benzyl ether.
Tonghua Sun - One of the best experts on this subject based on the ideXlab platform.
-
a novel Desulfurization process of gasoline via sodium metaborate electroreduction with pulse voltage using a boron doped diamond thin film electrode
Fuel, 2013Co-Authors: Chenhua Shu, Tonghua Sun, Jinping Jia, Ziyang LouAbstract:Abstract A novel Desulfurization process of gasoline was realized via sodium metaborate (NaBO 2 ) electroreduction with pulse voltage using a boron-doped diamond (BDD) thin film electrode under mild conditions. The results of cyclic voltammetry and 11 boron (B) nuclear magnetic resonance (NMR) confirmed that NaBO 2 was converted into sodium borohydride (NaBH 4 ) by electroreduction and the electroreduction voltage ranged from −1.2 V to −1.8 V. The factors that influenced Desulfurization efficiency were investigated and the Desulfurization efficiency reached more than 95% for model gasoline and more than 97% for real gasoline. The components of model gasolines before and after Desulfurization were analyzed by gas chromatography/mass spectrometer (GC/MS) and the elements content of electrolytes and digestion solution of precipitate were determined by inductively coupled plasma (ICP). Results indicated that Reductive Desulfurization process mainly involved the cleavage of C–S bond and the hydrogenation of C–C double bond and B recycle was realized at the same time as Desulfurization. Consequently, possible Desulfurization mechanism was proposed. Desulfurization kinetics showed a pseudo-first-order toward thiophene or benzothiophene. All these results indicated that the gasoline Desulfurization process via sodium metaborate electroreduction with pulse voltage using a BDD thin film electrode was feasible.
-
mild process for Reductive Desulfurization of diesel fuel using sodium borohydride in situ generated via sodium metaborate electroreduction
Industrial & Engineering Chemistry Research, 2013Co-Authors: Chenhua Shu, Tonghua Sun, Jinping Jia, Ziyang LouAbstract:A novel integrated process was proposed for Reductive Desulfurization of diesel fuel, in which the reductant sodium borohydride (NaBH4) was in situ generated via sodium metaborate (NaBO2) electroreduction. In order to improve the conversion rate of BO2– into BH4–, NaBO2 electroreduction was fulfilled by applying pulse voltage and using a boron-doped diamond (BDD) thin film electrode. The NaBO2 electroreduction process was analyzed by cyclic voltammetry and 11boron nuclear magnetic resonance (11B NMR) and the factors that influenced Desulfurization efficiency were investigated. Under the optimal conditions Desulfurization efficiency reached more than 93% for model diesel fuel. The components of model diesel fuel after Desulfurization were analyzed by gas chromatography/mass spectrometry (GC/MS) and the electrolyte and digestion solution of precipitate were analyzed by inductively coupled plasma (ICP). Results indicated that B recycle was realized at the same time as Desulfurization. Finally, the desulfuriz...
-
recent advances of sodium borohydride reduction in coal water slurry Desulfurization integration of chemical and electrochemical reduction
RSC Advances, 2012Co-Authors: Yafei Shen, Xunyue Liu, Tonghua Sun, Jinping JiaAbstract:Clean fuel technologies have been widely developed in current society because fuel combustion can directly bring about the emission of hazardous gasses, i.e. SO2, sulfate particulate matter (SPM), resulting in environmental pollution and other related problems that endanger public heath and community property; as well as reducing the life of the engine due to corrosion. The research efforts for developing conventional hydroDesulfurization (HDS) and alternative Desulfurization methods such as selective adsorption, bioDesulfurization, oxidation/extraction (oxidative Desulfurization), etc. for removing these refractory sulfur compounds from liquid fuel products are on the rise. The Reductive Desulfurization method under ambient conditions has rarely been researched. This paper reviews the current status of various desulphurization techniques being studied worldwide. It presents an overview of novel emerging technologies of chemical and electrochemical reduction (CECR) for deep Desulfurization of coal water slurry (CWS) so as to provide a new way of thinking about ultra-clean fuel technology.
-
innovative Desulfurization process of coal water slurry under atmospheric condition via sodium metaborate electroreduction in the isolated slot
Energy & Fuels, 2011Co-Authors: Yafei Shen, Tonghua Sun, Xueli Yang, Jinping JiaAbstract:This electrochemical Reductive Desulfurization (ERD) method for coal water slurry (CWS), which was an offshoot of the research Novel Desulfurization Method of Sodium Borohydride Reduction for Coal Water Slurry (Shen, Y. F.; Sun, T. H.; Jia, J. P. Energy Fuels 2011, 25, 2963–2967.), utilized cathodic reduction to change some chemical compounds into strong reducing substances that convert various forms of sulfur (S) in coal into H2S and S2–, thus releasing S from coals. It was an effective way to enhance S removal from coal by adding divalent metal catalysts (Ni2+, Mn2+, etc.). Using the atmospheric conditions of 12 g/L of NaBO2, 3.0 V of electrolytic voltage, 4 h of electrolytic time, 50 g/L of CWS, ≤140 mesh of coal particle size, 1.0 g/L of NaOH, and 1 mM (about 0.13 g/L) of NiCl2 catalyst, the total sulfur (TS) of CWS can be dramatically reduced by 58.5%. The ERD described here was a predominant Desulfurization process, such as mild (slight improvement of the combustion characteristics), high desulfuriz...
Chenhua Shu - One of the best experts on this subject based on the ideXlab platform.
-
Reductive Desulfurization of aromatic sulfides with nickel boride in deep eutectic solvents
New Journal of Chemistry, 2021Co-Authors: Chenhua Shu, Xunzheng Liu, Wenjing Xie, Shuiping Cai, Mengjiao WangAbstract:In order to improve the Desulfurization rate, deep eutectic solvents (DESs) were used for the first time as solvents in the Reductive Desulfurization process with nickel boride (NB). DES plays a dual role of stabilizer and extracting agent in the Desulfurization process. NBs prepared in different solvents were characterized by PSZPA, SAPA, XRD and FTIR spectroscopy. Results indicate that the NBs with small particle size and high specific surface area can be obtained by using DES as the solvent. The Desulfurization rate of aromatic sulfides using DESs as the solvent is much higher than that using MeOH/THF as the solvent. The Desulfurization rate in different DESs follows the order of tetrabutyl ammonium chloride (TBAC)/polyethylene glycol > TBAC/ethylene glycol > TBAC/glycerol. No chemical reactiong takes place between NB and DESs, and the structures of the DESs remain unchanged after regeneration.
-
optimal extractive and Reductive Desulfurization process using sodium borohydride in situ generated via sodium metaborate electroreduction in ionic liquid
Chemical Engineering and Processing, 2020Co-Authors: Chenhua Shu, Faying Lai, Feng Zhu, Dan LuoAbstract:Abstract In order to lower Desulfurization cost, the NaBH4 preparation via NaBO2 electroreduction was introduced into the integrated process of extraction and Reductive Desulfurization. Accordingly, a novel Desulfurization method was developed where NaBH4 can be recycled at the same time as Desulfurization. The process of NaBH4 preparation via NaBO2 electroreduction was analyzed by cyclic voltammetry and the effect of pulse parameters on Desulfurization efficiency was optimized by orthogonal experiments. Under optimal conditions Desulfurization efficiency of more than 97 % was obtained for model fuel oil. Desulfurization mechanism and kinetics was probed. Results showed that the Desulfurization of DBT should proceed over direct cleavage of C S bond and Desulfurization reaction could be treated as pseudo-first-order reaction. Furthermore, the structures of original and recycled ionic liquids (ILs) were analyzed by nuclear magnetic resonance and the Desulfurization performance of the recycled ILs was also investigated. Results showed that ILs maintained their original structures after regeneration and displayed good reusability. In summary, the novel Desulfurization process is feasible and promising.
-
a novel Desulfurization process of gasoline via sodium metaborate electroreduction with pulse voltage using a boron doped diamond thin film electrode
Fuel, 2013Co-Authors: Chenhua Shu, Tonghua Sun, Jinping Jia, Ziyang LouAbstract:Abstract A novel Desulfurization process of gasoline was realized via sodium metaborate (NaBO 2 ) electroreduction with pulse voltage using a boron-doped diamond (BDD) thin film electrode under mild conditions. The results of cyclic voltammetry and 11 boron (B) nuclear magnetic resonance (NMR) confirmed that NaBO 2 was converted into sodium borohydride (NaBH 4 ) by electroreduction and the electroreduction voltage ranged from −1.2 V to −1.8 V. The factors that influenced Desulfurization efficiency were investigated and the Desulfurization efficiency reached more than 95% for model gasoline and more than 97% for real gasoline. The components of model gasolines before and after Desulfurization were analyzed by gas chromatography/mass spectrometer (GC/MS) and the elements content of electrolytes and digestion solution of precipitate were determined by inductively coupled plasma (ICP). Results indicated that Reductive Desulfurization process mainly involved the cleavage of C–S bond and the hydrogenation of C–C double bond and B recycle was realized at the same time as Desulfurization. Consequently, possible Desulfurization mechanism was proposed. Desulfurization kinetics showed a pseudo-first-order toward thiophene or benzothiophene. All these results indicated that the gasoline Desulfurization process via sodium metaborate electroreduction with pulse voltage using a BDD thin film electrode was feasible.
-
mild process for Reductive Desulfurization of diesel fuel using sodium borohydride in situ generated via sodium metaborate electroreduction
Industrial & Engineering Chemistry Research, 2013Co-Authors: Chenhua Shu, Tonghua Sun, Jinping Jia, Ziyang LouAbstract:A novel integrated process was proposed for Reductive Desulfurization of diesel fuel, in which the reductant sodium borohydride (NaBH4) was in situ generated via sodium metaborate (NaBO2) electroreduction. In order to improve the conversion rate of BO2– into BH4–, NaBO2 electroreduction was fulfilled by applying pulse voltage and using a boron-doped diamond (BDD) thin film electrode. The NaBO2 electroreduction process was analyzed by cyclic voltammetry and 11boron nuclear magnetic resonance (11B NMR) and the factors that influenced Desulfurization efficiency were investigated. Under the optimal conditions Desulfurization efficiency reached more than 93% for model diesel fuel. The components of model diesel fuel after Desulfurization were analyzed by gas chromatography/mass spectrometry (GC/MS) and the electrolyte and digestion solution of precipitate were analyzed by inductively coupled plasma (ICP). Results indicated that B recycle was realized at the same time as Desulfurization. Finally, the desulfuriz...
Kiyoharu Nishide - One of the best experts on this subject based on the ideXlab platform.
-
a raney nickel sodium hypophosphite combination system for Reductive Desulfurization without racemization of optically active secondary alcohol
Tetrahedron, 1997Co-Authors: Manabu Node, Kiyoharu Nishide, Yukihiro Shigeta, Kenichi Obata, Hiroaki Shiraki, Hideaki KunishigeAbstract:Abstract Sulfides and sulfoxides bearing an optically active secondary alcohol were desulfurized with a Raney nickel (W-2)-sodium hypophosphite combination system to give optically active alcohols in high yields without racemization . However, the combination system was not effective with sulfides which comprise an alkylthio group and the corresponding sulfoxides. This system exhibited the Reductive Desulfurization of benzylthio or phenylthio ether in the presence of a benzyl ether.
-
Reductive Desulfurization using the raney nickel sodium hypophosphite combination system without racemization of a secondary alcohol
Tetrahedron Letters, 1996Co-Authors: Kiyoharu Nishide, Yukihiro Shigeta, Kenichi Obata, T Inoue, Manabu NodeAbstract:Abstract Thioethers bearing an optically active secondary alcohol were desulfurized with Raney nickel — sodium hypophosphite — acetate buffer system to give optically active alcohols without racemization in high yields. This Raney nickel combination system exhibited a unique Desulfurization of benzylthio or phenylthio group in the presence of benzyl ether.
