scholarly journals A green route to polyurethanes: oxidative carbonylation of industrially relevant aromatic diamines by CO2-based methyl formate

2020 ◽  
Vol 22 (23) ◽  
pp. 8260-8270
Author(s):  
Christine Hussong ◽  
Jens Langanke ◽  
Walter Leitner
Keyword(s):  
Methyl Formate ◽  
Oxidative Carbonylation ◽  
Aromatic Diamines ◽  
Green Route ◽  
Liquid Source

Toluene-2,4-diamine, 4,4′-methylenedianiline and 2,4-diaminomesitylene were converted directly into the corresponding dicarbamates via the CO2-based intermediate methyl formate (MF) which can be regarded as a liquid source for CO/MeOH mixtures.

scholarly journals Carbon2Polymer: A CO 2 ‐based Route to Polyurethanes via Oxidative Carbonylation of TDA with Methyl Formate

2020 ◽  
Vol 92 (10) ◽  
pp. 1482-1488 ◽  
Author(s):  
Christine Hussong ◽  
Jens Langanke ◽  
Walter Leitner
Keyword(s):  
Methyl Formate ◽  
Oxidative Carbonylation

Palladium catalyzed oxidative carbonylation of alkenes by methyl formate

1996 ◽  
Vol 135 (2) ◽  
pp. 329-339 ◽  
Author(s):  
Patrick Pennequin ◽  
Marc Fontaine ◽  
Yves Castanet ◽  
André Mortreux ◽  
Francis Petit
Keyword(s):  
Methyl Formate ◽  
Oxidative Carbonylation ◽  
Palladium Catalyzed

Comparison between Electron Yield, PSD Ion Yield, and Surface Pipico Yield in Near C and O K-Edge XAFS in Condensed Methyl Formate-D

1997 ◽  
Vol 7 (C2) ◽  
pp. C2-505-C2-506
Author(s):  
T. Selriguehi ◽  
H. L. Sekiguchi ◽  
K. Obi ◽  
K. Tanaka
Keyword(s):  
Methyl Formate ◽  
Electron Yield

A GREEN ROUTE TO SYNTHESIZE CeO2 NANOPARTICLES

2009 ◽  
Vol 8 (5) ◽  
pp. 1029-1033
Author(s):  
Gabriela Apostolescu ◽  
Nicolae Apostolescu ◽  
Gabriela Carja ◽  
Elena Husanu
Keyword(s):  
Ceo2 Nanoparticles ◽  
Green Route

Green synthesis, characterization of silver sulfide nanoparticles and antibacterial activity evaluation

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Antibacterial Activity ◽  
Large Scale ◽  
Research Work ◽  
Silver Sulfide ◽  
Morphological Properties ◽  
Effective Diameter ◽  
Novel Approach ◽  
Transmission Electron ◽  
Green Route ◽  
Silver Sulfide Nanoparticles

This research work presents a facile and green route for synthesis silver sulfide (Ag2SNPs) nanoparticles from silver nitrate (AgNO3) and sodium sulfide nonahydrate (Na2S.9H2O) in the presence of rosemary leaves aqueous extract at ambient temperature (27 oC). Structural and morphological properties of Ag2SNPs nanoparticles were analyzed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The surface Plasmon resonance for Ag2SNPs was obtained around 355 nm. Ag2SNPs was spherical in shape with an effective diameter size of 14 nm. Our novel approach represents a promising and effective method to large scale synthesis of eco-friendly antibacterial activity silver sulfide nanoparticles.

Green Route for the Removal of Pb from Aquatic Environment

2020 ◽  
Vol 23 (7) ◽  
pp. 587-598 ◽  
Author(s):  
Ahmed Refaat ◽  
Hanan Elhaes ◽  
Nabila S. Ammar ◽  
Hanan S. Ibrahim ◽  
Medhat Ibrahim
Keyword(s):  
Molecular Modeling ◽  
Sodium Alginate ◽  
Water Hyacinth ◽  
Aquatic Plant ◽  
Cost Effective ◽  
Important Process ◽  
Green Route ◽  
Homogeneous Structures ◽  
Different Sources ◽  
Water Hyacinth Root

Aim and Objective: Wastewater treatment/remediation is a very important process that has a great environmental and economic impact. Therefore, it is crucial to innovate different methods to remove pollutants of different sources from wastewater. This work was conducted in order to study the removal of lead (Pb+2) from wastewater using microspheres of composites of sodium alginate, cellulose and chitosan, as well as using a cost-effective green route through composites of sodium alginate and dried water hyacinth. Materials and Methods: Molecular modeling at B3LYP/6-31g(d,p) was utilized to study sodium alginate, cellulose and chitosan. Sodium alginate was cross-linked with calcium chloride to form microspheres, then both sodium alginate/cellulose and sodium alginate/chitosan were also crosslinked as 50/50 to form microspheres. The roots of the aquatic plant water hyacinth in dry form were added to the cross-linked sodium alginate for up to 70%. SEM and FTIR were employed to study the surface of the prepared microspheres and their structures respectively. Atomic absorption spectroscopy was used to study the levels of Pb. Results: Molecular modeling indicated that the blending of such structures enhances their ability to bind with surrounding molecules owing to their ability to form hydrogen bonds. SEM results indicated that homogeneous structures of cellulose and chitosan are deformed when blended with sodium alginate, and FTIR confirmed the proper formation of the desired blends. Microspheres from sodium alginate showed the ability to remove Pb+2 from wastewater. SEM indicated further deformation in the morphology with the roughness of sodium alginate/water hyacinth microspheres, while FTIR confirmed the uniform matrices of the microspheres. The removal of Pb+2 was enhanced because of the addition of dried water hyacinth's roots. Conclusion: Modeling, experimental and kinetic data highlight sodium alginate/water hyacinth root as a green route to remediate Pb+2 from wastewater.

Palladium-catalyzed carbonylation of 1,5-cyclooctadiene. Effects of temperature and pressure

1991 ◽  
Vol 56 (3) ◽  
pp. 663-672 ◽  
Author(s):  
Curtis B. Anderson ◽  
Rade Marković
Keyword(s):  
Carbon Monoxide ◽  
Oxidative Carbonylation ◽  
Influence Of Temperature ◽  
Carbonylation Reaction ◽  
Palladium Catalyzed ◽  
Effects Of Temperature ◽  
Temperature And Pressure

The influence of temperature and carbon monoxide pressure on the course of oxidative carbonylation reaction of 1,5-cyclooctadiene in the presence of the palladium(II) salts as a catalyst, was investigated.

Benzoxazine monomers based on aromatic diamines and investigation of their polymerization by rheological and thermal methods

2020 ◽  
Vol 138 (10) ◽  
pp. 49974
Author(s):  
Igor A. Sarychev ◽  
Vyacheslav V. Kireev ◽  
Vladimir V. Khmelnitskiy ◽  
Viktoria V. Vorobyeva ◽  
Anton S. Tupikov ◽  
...  
Keyword(s):  
Aromatic Diamines ◽  
Thermal Methods
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