Preparation of Biodiesel from Tung Oil Catalyzed by Sulfonic-Functional Brǒnsted Acidic Ionic Liquids

2011 ◽  
Vol 314-316 ◽  
pp. 1459-1462 ◽  
Author(s):  
Jian Hui Zhou ◽  
Yu Jing Lu ◽  
Bao Hua Huang ◽  
Yan Ping Huo ◽  
Kun Zhang
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Acid Group ◽  
Sulfonic Acid Group ◽  
Tung Oil ◽  
Acidic Ionic Liquids ◽  
Good Catalytic Activity

Preparation of biodiesel from tung oil catalyzed by five Brǒnsted acidic ionic liquids (ILs) with propyl sulfonic acid group was investigated. These ILs show good catalytic activity for the transeserification of tung oil. Among these ILs, [C3SO3Hmim]HSO4 showed a highest catalytic activity. In addition, these ionic liquids had a good reusability and could be easily separated from the biodiesel.

Cyclodehydration of Diols in Acidic Ionic Liquids

2011 ◽  
Vol 50 (1-2) ◽  
pp. 139-144
Author(s):  
E. Ausekle ◽  
A. Priksane ◽  
A. Zicmanis
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Acid Group ◽  
Cyclic Ethers ◽  
Sulfonic Acid Group ◽  
Acidic Ionic Liquids

Cyclodehydration of Diols in Acidic Ionic Liquids In the presence of sulfonic acid group functionalized Bronsted-acidic ionic liquids, cyclodehydration of 1,2-ethanediol and 1,4-butanediol is investigated. The role of structure and catalytic activity of ionic liquids on the formation of cyclic ethers: 1,4-dioxane and tetrahydrofuran - is determined.

Preparation and polymerization of isopropenyl-1,3,5-triazine containing sulfonic acid group.

1986 ◽  
Vol 43 (9) ◽  
pp. 573-579
Author(s):  
Yasuo YUKI ◽  
Hideo KUNISADA ◽  
Tomohiko NOMURA
Keyword(s):  
Sulfonic Acid ◽  
Acid Group ◽  
Sulfonic Acid Group

Synthesis, Characterization, and Crystal Structure of Several Novel Acidic Ionic Liquids: 1-ethyl-2-alkyl-benzimidazolium Tetra-Fluoroborate

2013 ◽  
Vol 457-458 ◽  
pp. 139-143 ◽  
Author(s):  
Ming Tian Wang ◽  
Chang Ping Pan ◽  
Wei Peng Gai ◽  
Xiao Xia Lv ◽  
Min Gang Zhai ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Ionic Liquid ◽  
Acetic Acid ◽  
Catalytic Activity ◽  
Lamellar Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
Good Catalytic Activity

A series of novel acidic ionic liquid: 1-ethyl-2-alkyl-benzimidazolium tetra-fluoroborate (alkyl= Et, Pr-n, Bu-n) were prepared by simple acid-based neutralization of 1-ethyl-2-alkyl-benzimidazole and tetrafluoroboric acid. The compounds were characterized by FTIR spectra, elemental analysis,1HNMR spectra and thermogravimetric analysis. These novel tetra-fluoroborate salts show good catalytic activity to esterification of benzyl alcohol and acetic acid. Furthermore, a crystal of ([H-ebBiBF4) was prepared with the crystal structure and determined by X-ray diffraction analysis. The molecular is of lamellar structure as mainly π electron ring is stacked interleaving between two layers. The results of cation and anion arranged orderly in pair indicate that the coulombic attraction is more dominant. Simultaneously, the weak local hydrogen bonds C-H···F exist in the molecules.

Sulfonic Acid Group Determination in Lignosulfonates by Headspace Gas Chromatography

2018 ◽  
Vol 6 (5) ◽  
pp. 6240-6246 ◽  
Author(s):  
Philipp Korntner ◽  
Andreas Schedl ◽  
Ivan Sumerskii ◽  
Thomas Zweckmair ◽  
Arnulf Kai Mahler ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Sulfonic Acid ◽  
Acid Group ◽  
Headspace Gas Chromatography ◽  
Sulfonic Acid Group ◽  
Headspace Gas

Subsidiary Colors in FD&C Blue No. 1

1969 ◽  
Vol 52 (1) ◽  
pp. 34-40 ◽  
Author(s):  
Charles Stein
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Sulfonic Acid ◽  
Acid Group ◽  
Sulfonic Acid Group ◽  
Layer Chromatography

Abstract The subsidiary colors in commercial FD&C Blue No. 1 have been identified by thin layer chromatography. They consist of dyes formed by the loss of one sulfonic acid group or of one sulfonated benzyl group from FD&C Blue No. 1.

Reactions of SO2X mono-substituted arenes with SO3 in nitromethane: electronic and steric directing effects of the sulfonic acid group and some model substituents

1993 ◽  
Vol 71 (2) ◽  
pp. 210-215 ◽  
Author(s):  
Harold R. W. Ansink ◽  
Erik J. De Graaf ◽  
Erwin Zelvelder ◽  
Hans Cerfontain
Keyword(s):  
Sulfonic Acid ◽  
Sulfur Trioxide ◽  
Reaction Rates ◽  
Acid Group ◽  
Sulfonic Acid Group ◽  
Order Of Magnitude ◽  
Directing Effect ◽  
Naphthalene Series ◽  
Benzene Series

The sulfonation of benzene-SO2X (X = CH3, OCH3, OH, and Cl) and of 1- and 2-naphthalene-SO2X (X = CH3, OCH3, and Cl) with sulfur trioxide in nitromethane as solvent has been studied. In the benzene series, substitution only occurs at the 3-position irrespective of X; the reaction rates, which are all within the same order of magnitude, are low. Upon sulfonation of the 1-SO2X-substituted naphthalenes, the main sulfonation product (58–80%) is the 5-sulfonic acid (5-S); in addition, 6-S and small amounts of 3-S and 7-S are formed. Also, the formation of the intermolecular sulfonic anhydride of 1-(methylsulfonyl)naphthalene-5-S is observed. The 2-SO2X-substituted naphthalenes all yield the 5-S and 8-S in a ratio of [Formula: see text] For both the benzene and naphthalene series, insertion of SO3 between the SO2 and X moieties of the chlorosulfonyl and methoxysulfonyl substituents proper takes place. In the benzene series these reactions are fast as compared with the actual ring sulfonation, whereas in the naphthalene series they are, in general, relatively slow. In the naphthalene series the mesomeric directing effect of the SO2X groups is less important than in the benzene series; the "naphthalene α-effect" also plays an important role.

Ionic liquid/H2O-mediated synthesis of mesoporous organic polymers and their application in methylation of amines

2017 ◽  
Vol 53 (44) ◽  
pp. 5962-5965 ◽  
Author(s):  
Xiaoxiao Yu ◽  
Zhenzhen Yang ◽  
Hongye Zhang ◽  
Bo Yu ◽  
Yanfei Zhao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Sulfonic Acid ◽  
Acid Group ◽  
Sulfonic Acid Group ◽  
Organic Polymers ◽  
Functionalized Ionic Liquid ◽  
Troger's Base

Mesoporous Tröger's base-functionalized organic polymers were prepared using a sulfonic acid group functionalized ionic liquid/H2O system without any templates and surfactants.

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