scholarly journals Rapid pretreatment of Miscanthus using the low-cost ionic liquid triethylammonium hydrogen sulfate at elevated temperatures

2018 ◽  
Vol 20 (15) ◽  
pp. 3486-3498 ◽  
Author(s):  
Florence J. V. Gschwend ◽  
Francisco Malaret ◽  
Somnath Shinde ◽  
Agnieszka Brandt-Talbot ◽  
Jason P. Hallett
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Lignocellulosic Biomass ◽  
Elevated Temperatures ◽  
Low Cost ◽  
Promising Method ◽  
Renewable Fuels ◽  
Hydrogen Sulfate

Deconstruction with low-cost ionic liquids (ionoSolv) is a promising method to pre-condition lignocellulosic biomass for the production of renewable fuels, materials and chemicals.

scholarly journals Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

10.3791/54246 ◽  
2016 ◽  
Author(s):  
Florence J. V. Gschwend ◽  
Agnieszka Brandt ◽  
Clementine L. Chambon ◽  
Wei-Chien Tu ◽  
Lisa Weigand ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Lignocellulosic Biomass ◽  
Low Cost

Chlorocuprate(i) ionic liquid as an efficient and stable Cu-based catalyst for hydrochlorination of acetylene

2019 ◽  
Vol 9 (11) ◽  
pp. 2868-2878 ◽  
Author(s):  
Yanfei Ren ◽  
Botao Wu ◽  
Fumin Wang ◽  
Hang Li ◽  
Guojun Lv ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Low Cost ◽  
Cost Efficient

Chlorocuprate(i) ionic liquids can be well-stabilized, low-cost, efficient and green non-mercury catalysts for hydrochlorination of acetylene.

Study on the Performance of the Ionic Liquids [Emim]CH3SO3 and [Emim]PF6 to Prepare the Biosensor of the Detection of Heavy Metals in Seawater

2017 ◽  
Vol 20 (1) ◽  
pp. 013-020 ◽  
Author(s):  
Xuhui Ma ◽  
Shipeng Zhao ◽  
Shuping Zhang
Keyword(s):  
Heavy Metal ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Electrochemical Sensors ◽  
Low Cost ◽  
Sensor Applications ◽  
Electrochemical Window ◽  
Significant Difference

Electrochemical sensors can detect the heavy metal ions in seawater quickly, conveniently and accurately with the advantages such as the fast detection speed, the simple operability and the low cost. The ionic liquid [Emim]CH3SO3 showed excellent electrochemical performance and could meet the initial application requirements as electrochemical sensors. The characters of the ionic liquids [Emim]CH3SO3 and [Emim]PF6 which include IR, LC-MS, conductivity, electrochemical window and viscosity were detected. The influ-ence of trace impurity on the conductivity of the ionic liquids was investigated. Results suggested that the conductivity of the ionic liquids increased with the concentration of the added organic solvents. In addition, though the conductivity of the ionic liquids increased with temperature, there is no significant difference in the influence of the same impurity at varying temperatures. Muti Walls Carbon Nanotubes (MWCNTs) are appropriate materials which are commonly used materials for electrochemical sensor applications. The effect of theImidaz-olium-based ionic liquids on the performance of the conductivity of the MWCNTs was studied. It was found that Ionic liquid is an excellent extraction agent for metal ions and its presence in the sensor system improves significantly the detection of heavy metal ions.

scholarly journals Biodiesel fromCitrullus colocynthisOil: Sulfonic-Ionic Liquid-Catalyzed Esterification of a Two-Step Process

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Yasir Ali Elsheikh ◽  
Faheem Hassan Akhtar
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Molar Ratio ◽  
Disulfonic Acid ◽  
Hydrogen Sulfate ◽  
Citrullus Colocynthis ◽  
Step Process ◽  
Acidic Catalyst ◽  
Acidic Catalysts

Biodiesel was prepared fromCitrullus colocynthisoil (CCO) via a two-step process. The first esterification step was explored in two ionic liquids (ILs) with 1,3-disulfonic acid imidazolium hydrogen sulfate (DSIMHSO4) and 3-methyl-1-sulfonic acid imidazolium hydrogen sulfate (MSIMHSO4). Both ILs appeared to be good candidates to replace hazardous acidic catalyst due to their exceptional properties. However, the two sulfonic chains existing in DSIMHSO4were found to increase the acidity to the IL than the single sulfonic chain in MSIMHSO4. Based on the results, 3.6 wt% of DSIMHSO4, methanol/CCO molar ratio of 12 : 1, and 150°C offered a final FFA conversion of 95.4% within 105 min. A 98.2% was produced via second KOH-catalyzed step in 1.0%, 6 : 1 molar ratio, 600 rpm, and 60°C for 50 min. This new two-step catalyzed process could solve the corrosion and environmental problems associated with the current acidic catalysts.

Progress in Research of Lewis Acid Ionic Liquids Used as Catalyst in Biodiesel Synthesis

2013 ◽  
Vol 773 ◽  
pp. 181-187 ◽  
Author(s):  
Ben Yong Han ◽  
Wu Di Zhang ◽  
Yu Bao Chen ◽  
Fang Yin ◽  
Shi Qing Liu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Lewis Acid ◽  
Low Cost ◽  
Biodiesel Production ◽  
Biodiesel Synthesis ◽  
The Cost ◽  
Production Preparation ◽  
Catalytic Reaction Mechanism

onic liquid is a green catalyzer and solvent which can be designed by changing the structure of its cation or anion. Ionic liquid has been used in diverse chemical reactions. Especially, Ionic liquids as environmentally friendly catalysts were applied in biodiesel production. Preparation of biodiesel catalyzed by ionic liquids have many merits, such as no corrosion to equipment, no pollution to environment, and reusability. In this paper, the advances in the Lewis acid ionic liquids catalysts and their application in biodiesel production were reviewed. The characterization of the ionic liquids were summarized. The catalytic reaction mechanism of the Lewis acid ionic liquids in the biodiesel production was discussed. In addition, the prospect for the application of the Lewis acid ionic liquids to catalyze biodiesel production was also stated. Since the cost of ionic liquid may be an issue, there are some challenges to be faced, such as the production of ionic liquids with low cost, easy recovery and with the possibility of reutilization of the catalyst for several cycles.

A Study on Permeabilities and Selectivities of Small-Molecule Gases for Composite Ionic Liquid and Polymer Membranes

2013 ◽  
Vol 448-453 ◽  
pp. 765-770 ◽  
Author(s):  
Li Zhe Liang ◽  
Quan Gan ◽  
Paul Nancarrow
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Gas Separation ◽  
Elevated Temperatures ◽  
Polymer Membranes ◽  
Porous Polymer ◽  
Separation Performance ◽  
Thermal Stabilities ◽  
Wide Range ◽  
Supported Ionic Liquid Membranes

In recent years, the utilisation of ionic liquids supported on porous polymer membranes has been demonstrated to enhance gas separation performance by improving both permeability and selectivity for several industrially-relevant gas mixtures. However, the use of such supported ionic liquid membranes (SILMs) is normally not feasible at elevated process temperatures due to the resulting decrease in ionic liquid viscosity, which can lead to increased loss of ionic liquid from the membrane support during operation. In addition, many of the polymer membranes typically used in SILMs exhibit relatively poor mechanical and thermal stabilities at high temperatures. To overcome these problems associated with SILMs, thermally-stable composite ionic liquid and polymer membranes (CILPMs) have been fabricated in this study, thus exploiting the beneficial properties of ionic liquids for gas separation at elevated temperatures. Poly (pyromellitimide-co-4,4-oxydianiline) (PMDA-ODA PI) in combination with the ionic liquid, [C4mi [NTf2] were used to fabricate the CILPMs. A measurement rig was designed and built to determine permeabilities and selectivities of the CILPMs for H2, N2, CO, CO2 and CH4 over a range of pressures and temperatures. The fabricated CILPMs were shown to maintain excellent mechanical and thermal stability over a wide range of processing conditions. Temperature was shown to greatly affect both permeability and selectivity of the membranes, whilst pressure had less influence. The incorporation of [C4mi [NTf2] into the membranes was found to significantly increase CO2 permeation and, therefore, it is anticipated that these CILPMs hold significant potential for CO2 separation applications.

scholarly journals Design of low-cost ionic liquids for lignocellulosic biomass pretreatment

2015 ◽  
Vol 17 (3) ◽  
pp. 1728-1734 ◽  
Author(s):  
Anthe George ◽  
Agnieszka Brandt ◽  
Kim Tran ◽  
Shahrul M. S. Nizan S. Zahari ◽  
Daniel Klein-Marcuschamer ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Lignocellulosic Biomass ◽  
Low Cost ◽  
Biomass Pretreatment ◽  
Lignocellulosic Biomass Pretreatment ◽  
The Cost

The cost of ionic liquids (ILs) is a barrier to utilization in cellulosic biorefinery pretreatment. Our low-cost [HSO4]− ILs are nearly as efficient as standard [OAc] options.

Catalytic transfer hydrogenolysis of ionic liquid processed biorefinery lignin to phenolic compounds

2017 ◽  
Vol 19 (1) ◽  
pp. 215-224 ◽  
Author(s):  
Kwang Ho Kim ◽  
Blake A. Simmons ◽  
Seema Singh
Keyword(s):  
Ionic Liquid ◽  
Phenolic Compounds ◽  
Lignocellulosic Biomass ◽  
Significant Role ◽  
Renewable Fuels ◽  
Fuels And Chemicals ◽  
Catalytic Transfer

Lignocellulosic biomass has the potential to play a significant role in the global bioeconomy for the production of renewable fuels and chemicals.

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