Deep Oxidative Desulfurization of Dibenzothiophene by Functional Tungsten-Containing Mesoporoussilica from Polyoxometalate-Based Salts

2014 ◽  
Vol 636 ◽  
pp. 93-96
Author(s):  
Ming Zhang ◽  
Wen Shuai Zhu ◽  
Meng Li ◽  
Yan An Li ◽  
Suhang Xun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Organic Solvents ◽  
Room Temperature ◽  
Oxidative Desulfurization ◽  
Catalytic Performance ◽  
Sulfur Compounds ◽  
High Dispersion ◽  
One Pot ◽  
Tungsten Species

Tungsten-containing functional mesoporousW-SiO2 have been successfully synthesized by an one-pot and facile room-temperature procedure. These materials presented a high dispersion of tungsten species and excellent catalytic activity on the removal of sulfur compounds without any organic solvents as extractants. The catalytic performance on sulfur compounds was investigated in detail. After recycling for 8 times, the removal of the oxidation desulfurization system could still reach 92.0%.

Green synthesis of novel 2-pyrazolyl-1,3-thiazolidine-4-ones using 2-oxoimidazolidine-1,3-disulfonic acid

2017 ◽  
Vol 23 (6) ◽  
Author(s):  
Mohammad Nikpassand ◽  
Leila Zare Fekri ◽  
Hasti Taherkhorsand
Keyword(s):  
Catalytic Activity ◽  
Green Synthesis ◽  
Organic Solvents ◽  
Room Temperature ◽  
Significant Loss ◽  
Disulfonic Acid ◽  
One Pot ◽  
Recoverable Catalyst

Abstract2-Oxoimidazolidine-1,3-disulfonic acid (OImDSA) is a recoverable catalyst for the synthesis of 1,3-thiazolidine-4-ones at room temperature in a one-pot procedure without using any organic solvents. Moreover, the catalyst can be easily recovered and recycled for five runs without significant loss of catalytic activity. The structures of the synthesized 1,3-thiazolidine-4-one compounds were confirmed by

Effect of Preparation Methods of HPW/SiO2 Mesoporous Composites on its Catalytic Performance in Fuel Oils Desulfurization

2010 ◽  
Vol 148-149 ◽  
pp. 924-928
Author(s):  
Xue Min Yan ◽  
Yuan Zhu Mi
Keyword(s):  
Catalytic Activity ◽  
Self Assembly ◽  
Electrostatic Force ◽  
Oxidative Desulfurization ◽  
Strong Acid ◽  
Catalytic Performance ◽  
Synthesis Mechanism ◽  
Base Interaction ◽  
Preparation Methods ◽  
Oh Groups

Two kinds of mesoporous HPW/SiO2 composites, which have been synthesized respectively by the amino-functionalized (AF) method and evaporation-induced self-assembly (EISA) method, have been used as catalysts in the oxidative desulfurization process of dibenzothiophene(DBT). The catalytic performance results show that the catalyst synthesized by EISA method holds higher catalytic activity than that synthesized by the AF method. The difference of catalytic activity can be attributed to the different synthesis mechanism of two kinds of composites. In the AF method, the bonding force between HPW and SiO2 is strong acid-base interaction, which damages the Keggin structure. Whereas in the EISA process, electrostatic force and hydrogen bonds between W=O groups and Si-OH groups are main bonding forces. The hydrogen bond holds the electron-withdrawing effect, which increases the activity of nonbonding W=O groups in HPW and then results in the enhancement of the catalytic activity.

Desulfurization from Gasoline by Polymer Resin at Room Temperature and Atmospheric Pressure

2011 ◽  
Vol 396-398 ◽  
pp. 1283-1286
Author(s):  
Jian Peng Zhu ◽  
Chun Hu Li ◽  
Jia Ling Chen ◽  
Ying Wei Luo
Keyword(s):  
Reaction Time ◽  
Sulfur Content ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
Oxidative Desulfurization ◽  
Sulfur Compounds ◽  
Molar Ratio ◽  
Reaction Conditions ◽  
Polymer Resin ◽  
Mild Conditions

Abstract. Investigation of polymer resin as catalyst in the oxidative desulfurization (ODS) process has revealed that the method can be applied to make a relative high removal of sulfur compounds. The reaction conditions, including temperature, amount of oxidant and reaction time were studied. The best result occurs under mild conditions with respect to room temperature and atmospheric pressure, to remove 75.54% of the totle sulfur content in the presence of H2O2 with an O/S molar ratio of 17. Possible mechanism is also disscussed.

scholarly journals One pot synthesis of copper nanoparticles at room temperature and its catalytic activity

2016 ◽  
Vol 9 ◽  
pp. S1807-S1812 ◽  
Author(s):  
Nikhil V. Suramwar ◽  
Sanjay R. Thakare ◽  
Niraj T. Khaty
Keyword(s):  
Catalytic Activity ◽  
Copper Nanoparticles ◽  
Room Temperature ◽  
One Pot ◽  
One Pot Synthesis

scholarly journals Size controlled green synthesis of gold nanoparticles using Coffea arabica seed extract and their catalytic performance in 4-nitrophenol reduction

RSC Advances ◽  
2018 ◽  
Vol 8 (44) ◽  
pp. 24819-24826 ◽  
Author(s):  
N. K. R. Bogireddy ◽  
U. Pal ◽  
L. Martinez Gomez ◽  
V. Agarwal
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Green Synthesis ◽  
Coffea Arabica ◽  
Room Temperature ◽  
Catalytic Performance ◽  
Seed Extract ◽  
Size Dependent ◽  
Nitrophenol Reduction ◽  
Size Controlled

Size dependent catalytic activity of AuNPs synthesized at room temperature from Coffea arabica seed extract.

In situ organic solvent-free synthesis of a novel red emitting Mn4+ doped KRbGeF6 phosphor at the room temperature

2020 ◽  
Vol 49 (38) ◽  
pp. 13226-13232 ◽  
Author(s):  
Yajun Jia ◽  
Yuexiao Pan ◽  
Jiawen Zhu ◽  
Xi'an Chen ◽  
Aiyin Wang ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Organic Solvent ◽  
Organic Solvents ◽  
Room Temperature ◽  
One Pot ◽  
Exchange Method ◽  
Ion Exchange Method ◽  
Solvent Free Synthesis ◽  
Red Emitting Phosphor

An efficient red emitting phosphor KRbGeF6 : Mn4+ was prepared by an in situ one-pot ion-exchange method at room temperature without organic solvents or HF.

Catalytic performance and stability of (V) MIL-47 and (Ti) MIL-125 in the oxidative desulfurization of heterocyclic aromatic sulfur compounds

2013 ◽  
Vol 305 ◽  
pp. 217-226 ◽  
Author(s):  
Nicholas D. McNamara ◽  
Gregory T. Neumann ◽  
Erin T. Masko ◽  
Jacqueline A. Urban ◽  
Jason C. Hicks
Keyword(s):  
Oxidative Desulfurization ◽  
Catalytic Performance ◽  
Sulfur Compounds

One-Pot Synthesis and Luminescent Properties of Mg (II) Complex Material with 5-Bromosalicylaldehyde- 4,4’-Diaminodiphenylamine

2011 ◽  
Vol 396-398 ◽  
pp. 935-938
Author(s):  
Li Hua Wang
Keyword(s):  
Solid State ◽  
Organic Solvents ◽  
Room Temperature ◽  
Luminescent Properties ◽  
Complex Materials ◽  
Green Fluorescence ◽  
One Pot ◽  
Complex Material ◽  
One Pot Synthesis ◽  
Light Green

Using 5-bromosalicylaldehyde, 4, 4’-Diaminodiphenylamine and MgCl2•6H2O as starting materials, a new Mg (II) complex material was synthesized. This method is a convenient and efficient way to the synthesis of Mg (II) complex materials. The luminescent properties of the Mg (II) complex material were studied in solid state and in organic solvents. The effect of organic solvents and three carboxylate derivatives on the luminescent properties are also investigated. The results show that the Mg (II) complex material emits light green fluorescence 550 nm when excited at 328 nm at room temperature.

scholarly journals Synthesis of Polyfunctionalized 4H-Pyrans

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Manisha Bihani ◽  
Pranjal P. Bora ◽  
Ghanashyam Bez
Keyword(s):  
Organic Solvents ◽  
Ethyl Acetoacetate ◽  
Room Temperature ◽  
Temperature Reaction ◽  
Chromatographic Purification ◽  
Reaction Conditions ◽  
One Pot ◽  
Experimental Procedure ◽  
Active Methylene Compounds ◽  
Active Methylene

Amberlyst A21 catalyzed one-pot three-component coupling of aldehyde and malononitrile with active methylene compounds such as acetylacetone and ethyl acetoacetate for the synthesis of pharmaceutically important polyfunctionalized 4H-pyrans has been reported. Simple experimental procedure, no chromatographic purification, no hazardous organic solvents, easy recovery and reusability of the catalyst, and room temperature reaction conditions are some of the highlights of this protocol for the synthesis of pharmaceutically relevant focused libraries.

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