scholarly journals Leaching Foams for Copper and Silver Dissolution: A Proof of Concept of a More Environmentally Friendly Process for the Recovery of Critical Metals

2021 ◽  
Author(s):  
Pierre Trinh ◽  
Alesya Mikhailovskaya ◽  
Mengxue Zhang ◽  
Patrick Perrin ◽  
Nadège Pantoustier ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Proof Of Concept ◽  
Critical Metals ◽  
Environmentally Friendly Process ◽  
Silver Dissolution

scholarly journals Homocoupling of terminal alkynes catalyzed by CuCl under solvent-free conditions

2021 ◽  
pp. 174751982110325
Author(s):  
Yan Xiao ◽  
Jiyu Gao ◽  
Peng Chen ◽  
Guangliang Chen ◽  
Zicheng Li ◽  
...  
Keyword(s):  
Functional Group ◽  
Reaction Times ◽  
Environmentally Friendly ◽  
Solvent Free ◽  
Copper Salt ◽  
Terminal Alkynes ◽  
Mild Conditions ◽  
Solvent Free Conditions ◽  
Environmentally Friendly Process

A series of symmetrical 1,4-disubstituted buta-1,3-diynes is prepared with excellent yields (up to 95%) through homocoupling of terminal alkynes catalyzed by a copper salt under solvent-free conditions. This method provides an environmentally friendly process to prepare 1,3-diynes in short reaction times under mild conditions. Furthermore, the method is suitable for a wide substrate scope and has excellent functional group compatibility. The reaction can also be scaled up to gram level.

Acetylation of Alcohols and Amines under Visible Light Irradiation: Diacetyl as an Acylation Reagent and Photosensitizer

2021 ◽  
Author(s):  
Pengcheng Lian ◽  
Ruyi Li ◽  
Xiao Wan ◽  
Zixin Xiang ◽  
Hang Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Functional Group ◽  
Environmentally Friendly ◽  
Light Irradiation ◽  
Environmentally Friendly Process

This work developed an unprecedented strategy for the acetylation of alcohols and amines using diacetyl as both an acylation reagent and photosensitizer. This environmentally friendly process exhibits excellent functional group...

Clay Aerogel Composite Materials

2010 ◽  
Vol 63 ◽  
pp. 147-151 ◽  
Author(s):  
David A. Schiraldi ◽  
Matthew D. Gawryla ◽  
Saeed Alhassan
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Environmentally Friendly ◽  
Porous Ceramics ◽  
Low Density ◽  
Polymer Foams ◽  
Freeze Dried ◽  
Aerogel Composite ◽  
Environmentally Friendly Process

A simple, inexpensive, and environmentally-friendly process for converting mixtures of clays and polymers has been developed. Polymer and clay are combined in water, and the mixtures are freeze dried to produce materials which have bulk densities typically in the range of 0.03 – 0.15 g/cm3. These low density polymer/clay aerogel materials possess good mechanical properties similar to those of traditional polymer foams, can be reinforced with fibers, modified with nanoparticles, biomineralized, or converted into porous ceramics.

A low cost, low energy, environmentally friendly process for producing high-purity boron carbide

2019 ◽  
Vol 45 (3) ◽  
pp. 3101-3110 ◽  
Author(s):  
Shuaibo Gao ◽  
Xin Li ◽  
Shuai Wang ◽  
Pengfei Xing ◽  
Jian kong ◽  
...  
Keyword(s):  
Boron Carbide ◽  
High Purity ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Low Energy ◽  
Environmentally Friendly Process

Environmentally friendly SPPS I. Application of NaOH in 2-MeTHF/methanol for Fmoc removal

2019 ◽  
Vol 21 (4) ◽  
pp. 775-779 ◽  
Author(s):  
Adam Přibylka ◽  
Viktor Krchňák ◽  
Eva Schütznerová
Keyword(s):  
Peptide Synthesis ◽  
Solid Phase ◽  
Solid Phase Peptide Synthesis ◽  
Environmentally Friendly ◽  
Environmentally Friendly Process

Focusing on the step-by-step transformation of the traditional solid-phase peptide synthesis (SPPS) into an environmentally friendly process, we herein report the elimination of environmentally hazardous components (piperidine, DMF and DCM) from this technique.

A compact and scalable fabrication method for robust thin film composite membranes

2018 ◽  
Vol 20 (8) ◽  
pp. 1887-1898 ◽  
Author(s):  
Ji Hoon Kim ◽  
Marcus Cook ◽  
Sang Hyun Park ◽  
Sun Ju Moon ◽  
Jeong F. Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Process Intensification ◽  
Environmentally Friendly ◽  
Composite Membranes ◽  
Fabrication Method ◽  
Film Composite ◽  
Thin Film Composite ◽  
Membrane Fabrication ◽  
Environmentally Friendly Process ◽  
Wastewater Generation

A compact and scalable membrane fabrication method proposes an environmentally friendly process intensification in terms of efficiently reduced production time, chemical consumption, and wastewater generation, resulting in a robust membrane.

Synthesis of metal nanoparticles using yeast strains Saccharomyces Cerevisae and Saccharomyces Boulardi

2021 ◽  
pp. 44-49
Author(s):  
Ekaterina A. Pukhovskaya ◽  
Egor V. Kalinin ◽  
Ya. M. Stanishevskiy
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Metal Nanoparticles ◽  
Extracellular Enzymes ◽  
Biological Systems ◽  
Environmentally Friendly ◽  
Synthesis Of Nanoparticles ◽  
Yeast Strains ◽  
Environmentally Friendly Process

The development of an environmentally friendly process for the synthesis of metal nanoparticles is an important step in the field of nanotechnology. One way to achieve this goal is to use biological systems. In this study, silver nanoparticles were obtained using extracellular enzymes of organisms of the Saccharomyces boulardi strain. The effect of the pH of the medium on the synthesis of nanoparticles was studied. The antimicrobial activity of the obtained nanoparticles was investigated.

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