Results 41 to 50 of about 18,682 (226)

Multiscale Regulation of Ru‐Based Catalysts for Upgrading Biomass‐Derived Levulinic Acid and Levulinates to γ‐Valerolactone: Mechanisms, Advances, and Challenges

Advanced Science, EarlyView.
This review summarizes recent advances in the mechanistic, thermodynamic, and kinetic studies of biomass‐derived levulinic acid/levulinates conversion to γ‐valerolactone, along with the corresponding multiscale regulation strategies of Ru‐based catalysts.
Xin Ni, Cailu Xiao, Gongbing Zhou, Jingzi Zhang   +3 more
wiley   +1 more source

Etude de la transestérification d’un mélange des huiles usagées pour la production du biodiesel

Revue des Énergies Renouvelables, 2016
Ce travail a pour objectif principal de valoriser un déchet agroalimentaire pour la synthèse et la caractérisation physico-chimique du biodiesel. La méthode utilisée est basée sur la réaction de transestérification des huiles en utilisant le méthanol en ...
Z. Bettahar, B. Cheknane, K. Boutemak
doaj  

Bioorthogonal Click‐to‐Disassemble Phthalocyanine Nanoassemblies for Precise Chemo‐Photodynamic Therapy against Hypoxic Tumors

Advanced Science, EarlyView.
A bioorthogonal “click‐to‐disassemble” strategy enables precise activation of self‐assembled phthalocyanine nanoassemblies for chemo‐photodynamic therapy. EGFR‐targeted activator triggers IEDDA‐mediated disruption of the quenched assemblies, restoring fluorescence and ROS generation while releasing tirapazamine.
Jiaxin Shen, Evelyn Y. Xue, Caixia Yang, Peter Chi Keung Cheung, Dennis K. P. Ng   +4 more
wiley   +1 more source

Production of Biodiesel from Chicken Frying Oil [PDF]

Pakistan Journal of Analytical & Environmental Chemistry, 2011
Chicken fried oil was converted into different biodiesels through single step transesterification and two step transesterification, namely acid-base and base–base catalyzed transesterification. Hydrochloric acid and potassium hydroxide with methanol were
Emaad T. Bakir, Abdelrahman B. Fadhil
doaj  

Procédé de fabrication d'un composé chimique en phase solide destiné à être utilisé comme catalyseur dans une réaction de transestérification [PDF]

, 2015
Procédé de fabrication d'un composé chimique en phase solide destiné à être utilisé comme catalyseur dans une réaction de transestérification, ce procédé comprenant les opérations suivantes : - pulvérisation de coques de fruits à noyaux; - mélange d'un ...
Ouedraogo, Wennd Kouni Igor, Blin, Joël
core  

Procédé de production d'ester d'acide ricinoléique par transestérification enzymatique sélective [PDF]

, 2011
La présente invention concerne un procédé de préparation d'ester d'acide ricinoléique à partir d'une huile végétale pure en mélange, notamment l'huile de ricin, ledit procédé comprenant au moins une étape de transestérification enzymatique réalisée en ...
Bourlieu-Lacanal, Claire, Dubreucq, Eric, Villeneuve, Pierre, Dubois, Jean-Luc, Lecomte, Jérôme   +4 more
core  

Aktivierung von Metallkomplexen durch Ultraschallwellen für eine gezielte Krebstherapie

Angewandte Chemie, EarlyView.
Ultrasound enables non‐invasive activation of metal‐based therapeutics deep within tumors. Acoustic cavitation can drive sonodynamic reactive oxygen species generation or mechanochemical metal–ligand bond dissociation, enabling controlled release of bioactive payloads.
Félix Grosjean, Nicolás Montesdeoca, Gilles Berger, Johannes Karges   +3 more
wiley   +1 more source

Penggunaan Ultrasonik untuk Transesterifikasi Minyak Goreng Bekas

Jurnal Rekayasa Kimia & Lingkungan, 2011
In this work, the ultrasound-assisted transesterification of used frying oil (UFO) was studied. A two-step pretreatment of degumming and esterification was conducted to prepare UFO as raw material for transesterification.
Muhammad Dani Supardan
doaj   +2 more sources

Supercritical Methanol Transesterification for Simultaneous Biodiesel Production Based on Cir-ULIF-MABAC-TOPSIS Model with Hamacher Norms

Energy Nexus
Supercritical methanol transesterification is a well-established and efficient process that produces biodiesel by reacting methanol with triglycerides under extreme temperature and pressure conditions.
Hamza Zafar, Zeeshan Ali, Bo Hsiao, Sarbast Moslem, Tapan Senapati   +4 more
doaj   +1 more source

Microwave-Assisted Transesterification of Macroalgae

Energies, 2012
Nowadays microwave radiation is being researched to produce biodiesel from different raw materials due to the many advantages that this technology presents compared to traditional transesterification, such as shorter reaction times and less amount of ...
Angel Sanchez, Santiago Urrejola, Rocio Maceiras, Angeles Cancela   +3 more
doaj   +1 more source