Synthesis and characterization of CMC from water hyacinth cellulose using isobutyl-isopropyl alcohol mixture as reaction medium

2015 ◽  
Vol 8 ◽  
pp. 1571-1582 ◽  
Author(s):  
Asep Handaya Saputra ◽  
Melanie Hapsari ◽  
Alia Badra Pitaloka
Keyword(s):  
Water Hyacinth ◽  
Isopropyl Alcohol ◽  
Reaction Medium ◽  
Synthesis And Characterization ◽  
Alcohol Mixture

scholarly journals Gold(I) Complexes with Ferrocenylphosphino Sulfonate Ligands: Synthesis and Application in the Catalytic Addition of Carboxylic Acids to Internal Alkynes in Water

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 955 ◽  
Author(s):  
Javier Francos ◽  
María Esther Moreno-Narváez ◽  
Victorio Cadierno ◽  
Diego Sierra ◽  
Katherine Ariz ◽  
...  
Keyword(s):  
Diffraction Study ◽  
Carboxylic Acids ◽  
Reaction Medium ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Internal Alkynes ◽  
Unsaturated Carboxylic Acids ◽  
Catalytic Addition

The synthesis and characterization of novel gold(I) complexes containing hydrophilic ferrocenylphosphino sulfonate ligands, i.e., compounds [AuCl{(η5-C5H3PR2(SO3iPr))Fe(η5-C5H5)}] (R = Ph (2a), p-Tol (2b), Cy (2c)), are presented, including a single-crystal X-ray diffraction study on 2a. Complexes 2a–c were checked as catalysts for the intermolecular addition of carboxylic acids to nonactivated internal alkynes using water as a green reaction medium. The best results in terms of activity were obtained with 2a in combination with AgOAc, which was able to promote the selective anti addition of a variety of aromatic, aliphatic, and α,β-unsaturated carboxylic acids to both symmetrical and unsymmetrical internal alkynes at 60 °C, employing metal loadings of only 2 mol %.

scholarly journals Synthesis and characterization of CMC from water hyacinth for lithium-ion battery applications

2018 ◽  
Author(s):  
Sahrul Hidayat ◽  
Susanty ◽  
Nowo Riveli ◽  
Bambang Joko Suroto ◽  
Iman Rahayu
Keyword(s):  
Lithium Ion Battery ◽  
Water Hyacinth ◽  
Lithium Ion ◽  
Synthesis And Characterization

Darstellung und Charakterisierung von „Nitrenkomplexen“ des Molybdän und Wolfram der Zusammensetzung [(η5-C5H5)OM]2(μ-NCOOC2H5)2 (M = Mo, W ) und [(η5-C5H5)OMo]2(μ-NCO2C2H5)(μ-O) / Synthesis and Characterization of "Nitrene Complexes" of Molybdenum and Tungsten of Composition [(η5-C5H5)OM]2(μ-NCOOC2H5)2 (M = Mo, W ) and [(η5-C5H5)OMo]2(μ-NCO2C2H5)(μ-O)

1979 ◽  
Vol 34 (11) ◽  
pp. 1507-1511 ◽  
Author(s):  
Richard Korswagen ◽  
Klaus Weidenhammer ◽  
Manfred L. Ziegler
Keyword(s):  
Reaction Medium ◽  
Synthesis And Characterization ◽  
Secondary Products ◽  
And Tungsten

The photolytical reactions of η5-C5H5Mo(CO)3CH3 (1) or η5-C5H5W(CO)3CH3 (2) with N3CO2C2H3 (3) in CH2Cl2 yield the “nitrene” complexes [(η5-C5H5JMoO)(μ-NCO2C2H5)2 (4), [(η5-C5H5)WO]2(μ-NCO2C2H5)2 (5) and [(η-C5H5JMoO]2(μ-NCO2H5)(μ-O) (6) together with some η5-C5H5Mo(CO)3Cl (7) and η5-C5H5W(CO)3Cl (8), proving that the solvent takes part in the reaction. Compounds 4, 5 and 6 contain bridging imido groups, arising from the capture of probably free nitrenes NCO2C2H5 by organometallic species. Evidence for the presence of free nitrenes in the reaction medium is provided by the isolation of urethane (9), tetrachlorethene (10), 7 and 8 as secondary products.

scholarly journals Synthesis and Characterization of Piperidin-4-one Derivatives Using Green Solvent

2020 ◽  
Vol 32 (4) ◽  
pp. 981-984 ◽  
Author(s):  
K. Hemalatha ◽  
D. Ilangeswaran
Keyword(s):  
Deep Eutectic Solvent ◽  
Reaction Medium ◽  
Synthesis And Characterization ◽  
Synthetic Method ◽  
Spectroscopic Techniques ◽  
Green Solvent ◽  
Environmentally Safe ◽  
Ft Ir ◽  
Effective Reaction

A deep eutectic solvent of glucose-urea was found to be an inexpensive and effective reaction medium in the synthesis of piperidin-4-one derivatives. In this work, 3-methyl-2,6-diphenyl piperidin-4-one (4a), 3,5-dimethyl-2,6-diphenylpiperidin-4-one (4b), 2,6-diphenylpiperidin-4-one (4c), piperidin-4- one (4d), 3,5-dimethylpiperidin-4-one (4e), 3-methyl-2,6-di(2-hydroxyphenyl)piperidin-4-one (4f), 3,5-dimethyl 2,6-di(2-hydroxyphenyl)piperidin-4one (4g) were synthesized using a deep eutectic solvent (DES) of glucose and urea with the percentage composition of 60:40. The yields of these products were 82, 78, 75, 68, 72, 70 and 70 %, respectively. The products obtained were characterized by FT-IR and 1H NMR spectroscopic techniques. A synthesis of piperidin-4-one derivatives by using this green solvent was considered to be new environmentally safe synthetic method.

scholarly journals Synthesis and Characterization of Cu2FeSnS4–Cu2MnSnS4 Solid Solution Microspheres

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4440
Author(s):  
Edyta Waluś ◽  
Maciej Manecki ◽  
Grzegorz Cios
Keyword(s):  
Solid Solution ◽  
Chemical Composition ◽  
Reaction Medium ◽  
Synthesis And Characterization ◽  
Continuous Series ◽  
X Ray Diffraction ◽  
X Ray ◽  
Surface Ligand ◽  
Scanning Electron

In this study, we used a hydrothermal method to synthesize microspheres of Cu2(Mn1−xFex)SnS4 solid solution (X = 1, 0.8, 0.6, 0.4, 0.2, 0). The process was optimized to improve the crystallinity, morphology, and purity of the obtained materials. All samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), Raman spectroscopy, and Fourier transform infrared (FTIR) spectroscopy. The following conditions were optimized: A mixture of water and ethylene glycol at the ratio of 1:7 as the reaction medium, polyvinylpyrrolidone (PVP) as the surface ligand, and reaction temperature of 195 °C for 7 days. The product of synthesis precipitated in the form of aggregates of nanocrystals, which form homogeneous, often concentric microspheres with a diameter of 1–1.5 μm. The chemical composition of the product can be well controlled by the chemical composition of the reactants. The compound Cu2(Mn1−xFex)SnS4 forms a continuous series of solid solutions.

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