Results 81 to 90 of about 190,133 (313)

Chemoselective Sequential Polymerization: An Approach Toward Mixed Plastic Waste Recycling

Advanced Functional Materials, EarlyView.
Inspired by biological protein metabolism, this study demonstrates the closed‐loop recycling of mixed synthetic polymers via ring‐closing depolymerization followed by a chemoselective sequential polymerizations process. The approach recovers pure polymers from mixed feedstocks, even in multilayer formats, highlighting a promising strategy to overcome a
Gadi Slor, Youwei Ma, Hyunwoo Park, Tae‐Lim Choi, Damien Guironnet, Francesco Stellacci   +5 more
wiley   +1 more source

Process intensification for continuous synthesis of performic acid using Corning advanced-flow reactors

Green Processing and Synthesis, 2017
The present paper reports the experimental details for the synthesis of performic acid (PFA) using Corning advanced-flow reactors (AFRs) using formic acid and H2O2 as reactants, and sulfuric acid as homogeneous catalyst. The effect of different operating
Gaikwad Shekar M., Jolhe Prashant D., Bhanvase Bharat A., Kulkarni Abhijeet, Patil Vilas S., Pimplapure Makarand S., Suranani Srinath, Potoroko Irina, Sonawane Shirish H., Sonawane Shriram S.   +9 more
doaj   +1 more source

Review of catalytic systems and thermodynamics for the Guerbet condensation reaction and challenges for biomass valorization [PDF]

, 2015
The Guerbet condensation reaction is an alcohol coupling reaction that has been known for more than a century. Because of the increasing availability of bio-based alcohol feedstock, this reaction is of growing importance and interest in terms of value ...
Gabriels, D, Hernández Enciso, Willinton Yesid, Sels, B, Van Der Voort, Pascal, Verberckmoes, An   +4 more
core   +2 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Oxidative desulfurization of diesel fuel oil using supported Fenton catalysts and assisted with ultrasonic energy

Petroleum Science, 2019
An ultrasound-assisted heterogeneous catalytic oxidation process was applied to eliminate sulfur from commercial diesel fuel oil. The studied variables were catalyst concentration, type of catalyst (homogeneous or heterogeneous), oxidizing agent ...
Roberto Flores, Arturo Rodas, Raquel Gasperin   +2 more
doaj   +1 more source

Synthesis of (Ind)2ZrCl2 Catalyst for Copolymerization of Ethylene and Propylene: Parameters Effect on Productivity [PDF]

علوم و تکنولوژی پلیمر, 2010
Bis(indenyl)zirconium dichloride as a catalyst was synthesized using a modified method at the room temperature. Polymerization of ethylene and copolymerization of ethylene and propylene were carried out by this metallocene catalyst. Ethylene propylene (P/
S. Ahmadjo, H. Arabi, M. Nekoomanesh, G.H. Zohuri, M. Mortazavi   +4 more
doaj   +1 more source

Study of Cu-Zn and Au/TiO2 Catalysts on Anodized Aluminum Monoliths for Hydrogen Generation and Purification [PDF]

, 2016
This work reports the preparation of Cu-Zn and Au/TiO2 catalysts on anodized aluminum monoliths(AAM). The structured catalysts were studied for the generation of H2 by methanol steam reforming (MSR) and its purification by preferential oxidation of CO ...
Adrover, María Esperanza, Boldrini, Diego Emmanuel, Casanovas Hoste, Adria, Jiménez Divins, Nuria, Llorca Piqué, Jordi, Lopez, Eduardo, Tonetto, Gabriela Marta   +6 more
core   +1 more source

SI‐bioATRP in Mesoporous Silica for Size‐Exclusion Driven Local Polymer Placement

Advanced Functional Materials, EarlyView.
An enzyme‐catalyzed surface‐initiated atom transfer radical polymerization (SI‐bioATRP) of an anionic monomer within mesoporous silica particles, using hemoglobin as a catalyst, allows for controlling the location of the formed polymer via size‐exclusion effects between the nanopores and the biomacromolecules, thereby opening routes to functional ...
Oleksandr Wondra, Eleonora Ornati, Robert Lehn, Joanna J. Mikolei, Hergen Breitzke, Raheleh Pardehkhorram, Gerd Buntkowsky, Nico Bruns, Annette Andrieu‐Brunsen   +8 more
wiley   +1 more source

Synthesis of biscoumarin derivatives by the reaction of aldehydes and 4-hydroxycoumarin using ruthenium (III) chloride hydrate as a versatile homogeneous catalyst [PDF]

Journal of the Serbian Chemical Society, 2012
The one-pot domino Knoevenagel-type condensation/Michael reaction of aromatic, heteroaromatic and aliphatic aldehydes with 4-hydroxycoumarin in aqueous media in the presence of ruthenium salt as homogeneous catalyst was investigated. It was found that
Tabatabaeian Khalil, Heidari Hannaneh, Khorshidi Alireza, Mamaghani Manouchehr, Mahmoodi Nosrat O.   +4 more
doaj   +1 more source

Intensified processes for FAME production from waste cooking oil: a technological review [PDF]

, 2013
This article reviews the intensification of fatty acid methyl esters (FAME) production from waste cooking oil (WCO) using innovative process equipment. In particular, it addresses the intensification of WCO feedstock transformation by transesterification,
Aubin, Joelle, Mazubert, Alex, Poux, Martine   +2 more
core   +4 more sources