scholarly journals Transforming Suzuki–Miyaura Cross-Couplings of MIDA Boronates into a Green Technology: No Organic Solvents

2013 ◽  
Vol 135 (47) ◽  
pp. 17707-17710 ◽  
Author(s):  
Nicholas A. Isley ◽  
Fabrice Gallou ◽  
Bruce H. Lipshutz
Keyword(s):  
Organic Solvents ◽  
Green Technology

ChemInform Abstract: Transforming Suzuki-Miyaura Cross-Couplings of MIDA Boronates into a Green Technology: No Organic Solvents.

ChemInform ◽  
2014 ◽  
Vol 45 (27) ◽  
pp. no-no
Author(s):  
Nicholas A. Isley ◽  
Fabrice Gallou ◽  
Bruce H. Lipshutz
Keyword(s):  
Organic Solvents ◽  
Green Technology

scholarly journals Highly Soluble Fluorinated Polyimides Synthesized with Hydrothermal Process towards Sustainable Green Technology

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3824
Author(s):  
Juheon Lee ◽  
Seungho Baek ◽  
Jinsu Kim ◽  
Sangrae Lee ◽  
Jinyoung Kim ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Organic Solvents ◽  
Hydrothermal Process ◽  
Green Technology ◽  
Synthetic Methods ◽  
Daily Lives ◽  
Fluorinated Polyimides ◽  
Thermal Imidization ◽  
Lower Temperature ◽  
Toxic Organic Solvents

Polyimides, a widely used engineering plastic, require use of large amounts of toxic and hazardous organic solvents which threaten our daily lives, calling for new and easy synthetic methods for sustainable environmentally friendly development. In this paper, highly soluble fluorinated polyimides based on 4,4′-(hexafluoroisopropylidene) diphthalic anhydride were synthesized via hydrothermal process without using any toxic organic solvents and the advantages of the newly demonstrated synthetic methods are shown by comparative analysis performed with the two conventional synthetic methods using organic solvent: thermal and chemical imidization. Lower temperature is required (~200 °C) compared to thermal imidization and functional groups for high fusibility formed more easily compared to chemical imidization. According to the comparative analysis, hydrothermally synthesized PIs showed excellent solubility and maintained high thermal stability (>500 °C) and glass transition temperature (>300 °C) compared to conventional PI. The hydrothermally synthesized polyimide is much more convenient to store and manage than other form of polyimide which is much more stable when it is exposed to humidity as it is a powder form. The hydrothermal synthetic method is verified to be a “Green” and facile method for sustainable PI synthesis.

Introducing green technology for extraction of medicinal and aromatic plants to Egypt

Planta Medica ◽  
2013 ◽  
Vol 79 (13) ◽  
Author(s):  
NS Abdel-Azim ◽  
KA Shams ◽  
MM El-Missery ◽  
SI Ismail ◽  
FM hammouda
Keyword(s):  
Green Technology ◽  
Aromatic Plants ◽  
Medicinal And Aromatic Plants

UNTERSUCHUNGEN ÜBER DIE EXTRAKTION DES ROTEN KOBER-FARBSTOFFS DURCH ORGANISCHE LÖSUNGSMITTEL ZUR ÖSTROGENBESTIMMUNG IM HARN

1960 ◽  
Vol XXXV (I) ◽  
pp. 34-48 ◽  
Author(s):  
Gerd Ittrich
Keyword(s):  
Menstrual Cycle ◽  
Organic Solvents ◽  
Urine Sample ◽  
Phenol Derivatives ◽  
Organische Lösungsmittel ◽  
Colour Complex

ABSTRACT A series of organic solvents and phenol derivatives have been examined for the extraction of the pink Kober-colour complex. Optimal results could be achieved for fluorimetry by a solution of 2 % (w/v) p-nitrophenol and 1 % (v/v) ethanol in acetylenetetrabromide, when the green mercury line (546 mμ was used as primary light. The sensitivity, stability and specificity have been improved, compared with the previously described reaction. By changing the sequence of purification steps and by reducing the volume of the urine sample (5 ml) the method for the determination of total oestrogens has been simplified. Approximately 10 determinations can be done within 3–4 hours by one person. Recovery experiments and comparative determinations with a previously described method have been carried out. The excretion of total oestrogens in a complete menstrual cycle is determined with the described method.

Application of Green Technology in Infrastructure

2012 ◽  
Vol 2 (2) ◽  
pp. 150-152
Author(s):  
Isha Verma ◽  
◽  
Prachi Sohoni ◽  
Nipun Verma
Keyword(s):  
Green Technology

Solar photocatalysis mediated by ZnO for the removal of last traces of Indigo carmine dye pollutant from water

2018 ◽  
Vol 4 (02) ◽  
Author(s):  
Veena Vijayan ◽  
Suguna Yesodharan ◽  
E. P. Yesodharan
Keyword(s):  
Indigo Carmine ◽  
Parent Compound ◽  
Oxygen Demand ◽  
Green Technology ◽  
Solar Photocatalysis ◽  
Reaction Proceeds ◽  
Transient Intermediates ◽  
Significant Chemical ◽  
Hydroxyl Free Radicals ◽  
Purification Of Water

Solar photocatalysis as a potential green technology for the removal of traces of the dye pollutant Indigo carmine (IC) from water is investigated using ZnO as the catalyst. Degradation/decolorization alone does not result in complete decontamination as seen from the significant Chemical Oxygen Demand (COD) of water even after the parent compound has disappeared completely. The degradation proceeds through many intermediates which also get mineralized eventually but slowly. Oxalic acid is identified as a stable slow mineralizing degradation product which itself is formed from other transient intermediates. Effect of various parameters such as catalyst dosage, concentration of the dye, pH, temperature, presence of contaminant salts etc. on the degradation is investigated and quantified. Oxidants such as S2O82- and H2O2 have only moderate influence on the degradation. The degradation follows variable kinetics depending on the concentration of the substrate. The reaction proceeds very slowly in the absence of O2 indicating the importance of reactive oxygen species and hydroxyl free radicals in photocatalysis. H2O2 formed insitu in the system undergoes concurrent decomposition resulting in stabilization in its concentration. The study demonstrates that solar photocatalysis can be used as a viable tool for the purification of water contaminated with traces of IC.

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