کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
45475 46412 2015 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Arylsulfonic acid functionalized hollow mesoporous carbon spheres for efficient conversion of levulinic acid or furfuryl alcohol to ethyl levulinate
ترجمه فارسی عنوان
اسید آرییل سولفونیک دارای کربن مزوپور توخالی است که برای تبدیل کارآیی اسید لووولینیک یا الکل فورفوریل به اتیل لووالینت
کلمات کلیدی
اتیل لووالینت، مولکول پلتفرم حاصل از زیست توده، اسید جامد، کره کره ای توخالی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• ArSO3H-based hollow mesoporous carbon spheres ArSO3H-HMCSs are prepared.
• ArSO3H-HMCSs exhibit excellent catalytic activity in synthesis of ethyl levulinate.
• Hollow mesoporous spherical morphologies positively influence the catalytic activity.
• ArSO3H-HMCSs can be reused at least 10 times without loss of catalytic activity.

A series of arylsulfonic acid functionalized hollow mesoporous carbon spheres (ArSO3H-HMCSs) with controllable ArSO3H loadings (1.8 and 3.2 wt%) and inner diameters (120–260 nm) were successfully prepared by chemical bonding ArSO3H groups to furfuryl alcohol-derived hollow mesoporous carbon spheres via diazonium coupling. The morphology, textural properties and chemical structure of as-prepared ArSO3H-HMCSs were well characterized by TEM, FESEM, nitrogen gas porosimetry measurement, XRD measurement, Raman scattering and FT-IR spectroscopy as well as XPS surface probe technique. As the novel solid acid catalysts, the catalytic activity and stability of the ArSO3H-HMCSs were evaluated by synthesis of ethyl levulinate from biomass-derived platform molecules, levulinic acid or furfuryl alcohol. The obtained excellent acid catalytic activity in comparison of other carbon-based SO3H catalysts such as ArSO3H-functionalized ordered mesoporous carbon, sulfonated hollow mesoporous carbon spheres as well as sulfonated incompletely carbonized d-glucose and cellulose was explained in terms of their strong Brønsted acidity and perfect hollow nanospherical morphology with thin mesoporous shell.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 179, December 2015, Pages 445–457
نویسندگان
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