Results 81 to 90 of about 51,547 (253)

Adaptation des aérogels de silice à l'encapsulation de lipases pour catalyse de transestérification [PDF]

, 2003
Des biocatalyseurs ont été préparés par encapsulation de deux lipases, la lipase de Burkholderia cepacia et la lipase de Candida rugosa, dans des aérogels de silice hydrophiles ou hydrophobes séchés sous CO2 supercritique. L'hydrophobicité des aérogels a
RASSY, Houssam El, PIERRE, Alain Christian   +1 more
core  

Schülerexperimente zur Synthese naturidentischer, geruchsaktiver Ester im Mikromaßstab durch alkalisch katalysierte Umesterung von Glyceriden

CHEMKON, EarlyView.
In diesem Beitrag wird ein einfaches Schülerexperiment vorgestellt, bei dem durch Umesterung von Triacylglyceriden mit n‐Alkanolen im Mikromaßstab geruchsaktive Alkylalkanoate hergestellt werden. Die Reaktion erfolgt alkalisch katalysiert bei Raumtemperatur in kleinen Gefäßen; es entstehen flüchtige Ester mit charakteristischen Frucht‐ und ...
Horst Klemeyer
wiley   +1 more source

Biodiesel Hasil Transesterifikasi Minyak Biji Nyamplung (Calophyllum inophyllum) Dengan Metanol

Indonesian Journal of Chemical Research, 2017
Study of the transesterification of Calophyllum innophyllum seed oil from Kendari with methanol has been conducted. The purpose of the research to determine of the yield of ester produced in transesterification process with methanol, the viscosity of ...
Rustam Musta, Aceng Haetami, Mimi Salmawati   +2 more
doaj   +1 more source

Lipase-Catalyzed Synthesis of Medium-Long-Medium-Type of Structured Lipids from Refined Bleached Deodorized Olein

Applied Food Biotechnology, 2020
Background and objective: Medium-long-medium type of structured lipid is appropriate for the management of obesity, fat malabsorption and other metabolic disorders.
Qabul Dinanta Utama, Azis Boing Sitanggang, Dede Robiatul Adawiyah, Purwiyatno Hariyadi   +3 more
doaj   +1 more source

Réactions de transestérification sélective du glycérol en présence de catalyseurs mésoporeux basiques [PDF]

, 2002
L'industrie oléochimique produit de plus en plus de glycérol, qui doit être valorisé, par exemple en tant que monoesters, tensioactifs non toxiques et biodégradables provenant de composés renouvelables. La synthèse industrielle en présence de catalyseurs
BANCQUART, Sébastien, BARRAULT, Joël
core  

Xylose Acetals ‐ a New Class of Sustainable Solvents and Their Application in Enzymatic Polycondensation

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Novel organic solvents with an unmodified carbohydrate core were synthesised both from D‐xylose and directly from biomass and were successfully used as reaction media for lipase biocatalysts to synthesise aliphatic and aromatic polyesters. Abstract The use of organic solvents in academic research and industry applications is facing increasing ...
Anastasia O. Komarova, Cicely M. Warne, Hugo Pétremand, Laura König‐Mattern, Johannes Stöckelmaier, Chris Oostenbrink, Georg M. Guebitz, Jeremy Luterbacher, Alessandro Pellis   +8 more
wiley   +1 more source

Methyl Esters Selectivity of Transesterification Reaction with Homogenous Alkaline Catalyst to Produce Biodiesel in Batch, Plug Flow, and Continuous Stirred Tank Reactors

International Journal of Chemical Engineering, 2014
Selectivity concept is essential in establishing the best operating conditions for attaining maximum production of the desired product. For complex reaction such as biodiesel fuel synthesis, kinetic studies of transesterification reaction have revealed ...
N. F. Nasir, W. R. W. Daud, S. K. Kamarudin, Z. Yaakob   +3 more
doaj   +1 more source

Transesterifikasi Minyak Ikan Perak (Mene maculata) Dengan Katalis CaO Dari Cangkang Telur Ayam

Indonesian Journal of Chemical Research, 2019
Silver fish (Mene maculata) is a type of pelagic fish found in the Moluccas sea, this fish has a high oil content so that it is easy to extract the oil content for transesterification.
Kartika Tahya, Candra Yulius Tahya, Healthy Kainama   +2 more
doaj   +1 more source

Low‐Temperature in Situ Upgrading of Ultra‐Deep Heavy Oil Using Ni–Ce/MOF–OTf Superacid Catalysts to Enhance Energy Utilization and Sustainability

EcoEnergy, EarlyView.
A triflate‐functionalized Ni–Ce/MOF–OTf superacid enables low‐temperature (∼140°C) in situ upgrading of ultra‐deep heavy oil. It reduces viscosity by 92.11% in 12 h, maintains activity over cycles, and delivers 90.25% recovery with a lower carbon footprint by selective bond cleavage. ABSTRACT Ultra‐deep heavy oil is an important unconventional resource,
Li Wang, Ji‐Xiang Guo, Qiming Huang, Kunpeng Li, Chi Li, Yajie Wu   +5 more
wiley   +1 more source

Penggunaan Katalis NaOH dalam Proses Transesterifikasi Minyak Kemiri menjadi Biodiesel

Jurnal Rekayasa Kimia & Lingkungan, 2011
Research on biodiesel production from hazelnut oil by transesterification process using NaOH catalyst was one of the efforts for renewable energy research.
Farid Mulana
doaj   +2 more sources