Results 21 to 30 of about 3,383 (196)

Synthesis of Glycerol Carbonate from Ethylene Carbonate Using Zinc Stearate as a Catalyst: Operating Conditions and Kinetic Modeling

Molecules, 2023
With the advent of biodiesel as a substitute/additive for diesel, the production of glycerol has experienced an increase, as it is an unavoidable byproduct of the biodiesel process; therefore, novel products and processes based on this triol are being ...
Mariana Alvarez Serafini, David Gonzalez-Miranda, Gabriela Tonetto, Félix Garcia-Ochoa, Miguel Ladero   +4 more
doaj   +1 more source

Valorization of Waste Glycerol to Dihydroxyacetone with Biocatalysts Obtained from Gluconobacter oxydans

Applied Sciences, 2018
Waste glycerol is the main by-product generated during biodiesel production, in an amount reaching up to 10% of the produced biofuel. Is there any method which allows changing this waste into industrial valuable compounds?
Lidia Stasiak-Różańska, Anna Berthold-Pluta, Pritam Kumar Dikshit   +2 more
doaj   +1 more source

Microwave-assisted catalytic conversion of glycerol to lactic acid using a synergistic trimetallic oxide (NiO–CuO–ZnO) system [PDF]

RSC Advances
The catalytic conversion of glycerol into lactic acid offers a sustainable route for biomass valorization, yet achieving high selectivity under mild conditions remains challenging.
Jamna Prasad Gujar, Bharat Modhera, Yash Jaiswal   +2 more
doaj   +1 more source

Experimental and Simulation Studies for Purification and Etherification of Glycerol from the Biodiesel Industry

AppliedChem, 2023
In this study, a purification route was applied to crude glycerol and its valorization via etherification was evaluated. Crude glycerol samples were obtained through transesterification reactions of soybean oil with methanol using potassium hydroxide as ...
Silvia S. O. Silva, Matheus R. Nascimento, Ricardo J. P. Lima, Francisco Murilo Tavares Luna, Célio Loureiro Cavalcante Júnior   +4 more
doaj   +1 more source

A Green Approach to Obtaining Glycerol Carbonate by Urea Glycerolysis Using Carbon-Supported Metal Oxide Catalysts

Molecules, 2023
The results of sustainable and selective synthesis of glycerol carbonate (GC) from urea and glycerol under ambient pressure using carbon-fiber-supported metal oxide catalysts are reported.
Karolina Ptaszyńska, Anna Malaika, Klaudia Kozigrodzka, Mieczysław Kozłowski   +3 more
doaj   +1 more source

Progress of Catalytic Valorization of Bio-Glycerol with Urea into Glycerol Carbonate as a Monomer for Polymeric Materials [PDF]

Advances in Polymer Technology, 2020
Versatile polymers with highly adjustable characteristics and a broad range of applications are possibly developed owing to the contemporary industrial polymerization techniques. However, industrial production of large amounts of chemicals and polymers heavily depends on petroleum resources which are dwindling and unsustainable.
Heng Zhang, Hu Li, Anping Wang, Chunbao (Charles) Xu, Song Yang   +4 more
openaire   +3 more sources

Ketal Protection of Glycerol for Selective Electrosynthesis of Glyceric Acid in Highly Alkaline Media

Angewandte Chemie, EarlyView.
Using a ketal‐protected glycerol derivative (solketal) as the oxidation substrate enables site‐selective electrooxidation that suppresses C–C cleavage on non‐noble catalysts. Highly alkaline conditions promote reactive solketal alkoxide formation, weaken the Cα─H bond to facilitate dehydrogenation, and buffer local acidification, enabling a record‐high
Jiamin Wang, Baokun Zhang, Kanglei Pang, Egon Campos dos Santos, Hong Liu, Mats Johnsson, Xiaowen Yu   +6 more
wiley   +2 more sources

CO2 as a Redox Shuttle Enables Photocatalytic Dehydrogenative Decarbonylation of Biomass‐Derived Alcohols to Light Alkanes

Angewandte Chemie, EarlyView.
A heterogeneous photocatalytic system has been developed that enables the dehydrogenative decarbonylation of primary alcohols under visible light using highly dispersed oxidic iron sites supported on aryl‐modified graphitic carbon nitride (Fe@f–gC3N4).
Jun Hu, Wenhao Su, Chaoqin Zeng, Bruno Vinicius Manzolli Rodrigues, Nils Rockstroh, Susanna Monti, Giovanni Barcaro, Piotr Kuśtrowski, Aleksander Jaworski, Jabor Rabeah, Adam Slabon, Shoubhik Das   +11 more
wiley   +2 more sources

Valorization of xylose residues and crude glycerol for production of biopolyurethane foam

Waste and Biomass Valorization, 2023
Abstract Currently polyurethane (PU) products are heavily dependent on petroleum resources, highlighting an urgent need to develop new bio-based materials. This study aimed to develop a sustainable method of utilizing low-cost and renewable xylose residues (XR) and crude glycerol (CG) for the production of biopolyols.
Kai Fu, Linda Zhang, Yucheng Lin, Weihong Zhang, Zigao Zhao, Wei Chen, Chun Chang   +6 more
openaire   +1 more source

Enhanced Reduction of Few-Layer Graphene Oxide via Supercritical Water Gasification of Glycerol

Nanomaterials, 2017
A sustainable and effective method for de-oxygenation of few-layer graphene oxide (FLGO) by glycerol gasification in supercritical water (SCW) is described.
Daniel Torres, Pedro Arcelus-Arrillaga, Marcos Millan, José Luis Pinilla, Isabel Suelves   +4 more
doaj   +1 more source