506-13-8Relevant articles and documents
Sustainable Method for the Large-Scale Preparation of Fe3O4 Nanocrystals
Lee, SungWoo,Yoon, Jae-Sik,Kang, Sungkyoung,Kwon, Kihyun,Chang, Ki Soo,Lee, SangGap,Choi, Sang-Il,Jeong, Jong-Ryul,Lee, Gaehang,Nam, Ki Min,Davies
, p. 2578 - 2584 (2016)
In this work, a facile synthetic process is reported for the large-scale synthesis of Fe3O4 nanocrystals. Thermal decomposition of Fe(acac)3 (100 g) in 1-hexadecanol produced Fe3O4 nanocrystals with well-controlled sizes and morphologies. The nanocrystals were spherically shaped with average diameters of 7.8 ± 0.6, 6.5 ± 0.4, and 5.9 ± 0.2 nm when prepared at 300°C, 270°C, and 250°C, respectively. Mechanisms of crystal formation were elucidated on the basis of gas chromatography-mass spectroscopy analysis, enabling the large-scale preparation of Fe3O4 nanocrystals. To provide an environmentally benign route, Fe3O4 nanocrystals were prepared with recycled solvent which was recovered from the initial experiment. The resulting porous Fe3O4 nanocrystals had larger average sizes than those of the initial nanocrystals. Structural characterization was performed using transmission electron microscopy and powder X-ray diffraction.
ALKANE OXIDATION BY MODIFIED HYDROXYLASES
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Paragraph 0339, (2016/02/16)
This invention relates to modified hydroxylases. The invention further relates to cells expressing such modified hydroxylases and methods of producing hydroxylated alkanes by contacting a suitable substrate with such cells.
Enzymatic aminolysis of lactones in aqueous miniemulsion: Catalysis through a novel pathway
Ragupathy, Laks,Pluhar, Bettina,Ziener, Ulrich,Keller, Harald,Dyllick-Brenzinger, Rainer,Landfester, Katharina
experimental part, p. 270 - 276 (2010/11/16)
Lipase-catalyzed aminolysis of lactones under aqueous conditions usually leads to the hydrolysis of the ester bond with only a minor content of the corresponding amide. However, the aminolysis of pentadecanolide (PD) and hexadecanolide (HD), respectively, with oleylamine (OA) in aqueous miniemulsion under optimized conditions (temperature, concentration of enzyme, reaction time) yields >90% amide. Kinetic investigations performed with OA and PD reveal that the lipase catalyzes a novel reaction pathway, i.e., the hydrolysis of a lactone followed by the amidation requiring 30. min and 8 days reaction time, respectively. The demands of a high amount of lipase as well as the long reaction time are caused by the low reactivity of the carboxylic group and the formation of salt with the amine. Similar reactions were performed with PD and other amines such as dodecyl, decyl, octyl, benzyl and hexyl amine resulting the analogous amide compounds.