کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4996678 1368272 2018 8 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
Conversion of levulinic acid into alkyl levulinates: Using lipase immobilized on meso-molding three-dimensional macroporous organosilica as catalyst
ترجمه فارسی عنوان
تبدیل اسید لووولینیک به آلکالین لووولینات ها: استفاده از لیپاز به عنوان کاتالیزور بی حرکت شده بر روی مسی قالب گیری سه بعدی سلول های سرطانی
کلمات کلیدی
اسید لووولینیک؛ آلکیل levulinates؛ لیپاز Immobilized؛ قالب سازی meso؛ سه بعدی بزرگنمایی؛ Organosilica؛
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


- 3DOM/m-OS was prepared using dual templating method for the first time.
- CALB was immobilized onto 3DOM/m-OS by adsorption and 'NER' approach.
- NER@3DOM/m-OS exhibited excellent stability and reusability.
- Alkyl levulinate was synthesized using NER@3DOM/m-OS as biocatalyst.

For conversion of biomass-derived levulinic acid into alkyl levulinates, a novel kind of lipase-based biocatalyst was prepared through immobilized lipase B from C. antarctica (CALB) on organosilica material with highly ordered 3D macroporous organosilica frameworks and a 2D hexagonal meso-structure (named 3DOM/m-OS) for the first time. The catalytic performance of the immobilized lipase (NER@3DOM/m-OS) was investigated. NER@3DOM/m-OS was used as biocatalyst to catalyze the esterification reaction between levulinic acid (LA) and n-butanol. Under optimized reaction conditions, 74.59% of ester yield was achieved after 12 h of reaction. NER@3DOM/m-OS was also used to production of other alkyl levulinates, the ester yields increased to 84.51% (octyl levulinate) and 91.14% (dodecyl levulinate), respectively. When NER@3DOM/m-OS was used repeatedly in batch reactions, the ester yields of n-butyl, octyl, and dodecyl levulinate could retain 46.18%, 82.33% and 81.25% after 9 reaction cycles, respectively, which was better than commercial lipase Novozym 435 under the same condition.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 247, January 2018, Pages 568-575
نویسندگان
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