Results 101 to 110 of about 51,547 (253)
Utilization of fish oil for biodiesel production
Squalen, 2010 Recenty fossil fuel consumption gradually increases, resulting in decreases of its naturalresource and causing environmental problems such as air pollution and global warming.Attempts to overcome the problems have been made to create on alternative ...
Tri Nugroho Widianto +1 more
doaj +1 more source
Transestérification des huiles végétales par l’éthanol en conditions douces par catalyses hétérogènes acide et basique [PDF]
, 2009 Biodiesel is a mixture of mono-alkyl esters used as alternative fuel. It can be obtained by transesterification of vegetable oils or animal fats with light alcohols.The objective of this work is the research of acid and basic solid catalysts able to ...
Hamad, Berna
core
Macromolecular Rapid Communications, EarlyView.Liquid crystal elastomer (LCE) filaments are fabricated through extrusion with in‐process UV curing, enabling controlled flow alignment and network locking of mesogens. The resulting structure responds to thermal or optical stimuli, inducing molecular reorientation and macroscopic contraction.
Anne Schwarz‐Pfeiffer, Shazia Mehtab
wiley +1 more source
KINETICS OF PALM OIL TRANSESTERIFICATION IN METHANOL WITH POTASSIUM HYDROXIDE AS A CATALYST
Indonesian Journal of Chemistry, 2010 A study on palm oil transesterification to evaluate the effect of some parameters in the reaction on the reaction kinetics has been carried out. Transesterification was started by preparing potassium methoxide from potassium hydroxide and methanol and ...
Yoeswono Yoeswono +2 more
doaj +1 more source
Aptitude à la transestérification de quelques lipases régiosélectives 1-3. II. Taux de conversion et glycérides partiels en fonction de l'activité de l'eau des biocatalyseurs [PDF]
, 1988 La mise au point des réactions d'interestérification biocatalysées en milieu fondu par des lipases régiosélectives 1-3, sélectionnées précédemment pour leur activité de transestérification, nécessite d'étudier l'influence de l'activité de l'eau.
Graille, Jean +2 more
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Polycarbonate Vitrimers and Dynamic Co‐Networks From Epoxide/Carbon Dioxide Copolymerization
Macromolecular Rapid Communications, EarlyView.This work demonstrates how CO2‐derived poly(propylene carbonate) and poly(cyclohexene carbonate) backbones influence vitrimer thermo‐mechanical behavior. By tuning backbone composition, epoxide crosslinker chemistry and blend ratios, the crosslinked materials span a wide property window, from highly extensible to stiff, glassy networks, establishing an
Satej S. Joshi +3 more
wiley +1 more source
Industrial & Engineering Chemistry Research, 2019 In this paper, three different transesterification technologies, catalytic, enzymatic, and in situ transesterification, are examined and compared for the production of microalgal biodiesel through ...
Hyun Young Heo, Seongmin Heo, Jay H. Lee
semanticscholar +1 more source
Aptitude à la transestérification de quelques lipases régiosélectives 1-3. I. Détermination de l'activité spécifique. Comparaison entre interestérification et hydrolyse dans l'action des lipases [PDF]
, 1988 L'activité spécifique de transestérification de 3 lipases régiosélectives 1-3 issues de 3 microorganismes différents (Candida deformans, Rhizopus arrhizus et Mucor miehei) mises en oeuvre sous différentes formes [lipase en l'état, lipase fixée (célite ...
Graille, Jean +2 more
core
Macromolecular Rapid Communications, EarlyView.A single multinuclear aluminum catalyst enables temperature‐driven switching between block‐enriched, near‐statistical, and gradient CL/LA copolymer microstructures. Modulation of propagation and exchange processes within one catalytic platform provides a unified kinetic–thermodynamic framework for sequence control in biodegradable polyester ...
Yoseph Kim +4 more
wiley +1 more source
Chemically and Mechanically Recyclable Polyolefins Incorporating Covalent Adaptable Networks
Macromolecular Rapid Communications, EarlyView.Low‐molecular‐weight polypropylene is converted into a crosslinked polyolefin containing a covalently adaptable network. The semicrystalline material remains melt‐processable and mechanically recyclable. Its thermal and mechanical properties are comparable to commercial polyolefins.
Andrii Tiiara +4 more
wiley +1 more source