کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
44930 46380 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biodiesel production catalyzed by highly acidic carbonaceous catalysts synthesized via carbonizing lignin in sub- and super-critical ethanol
ترجمه فارسی عنوان
تولید بیودیزل کاتالیز شده توسط کاتالیزورهای کربنیک بسیار اسیدی که از طریق کربن سازی لیگنین در اتانول زیر و فوق بحرانی
کلمات کلیدی
لیگنین، کربن سازی آلکالوژی اسید جامد، بیودیزل، اتانول فوق العاده یا فرعی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• Lignin chars are obtained by carbonization in super- and sub-critical ethanol.
• Sulphonated chars as catalysts with high acid content of 5.05–5.35 mmol H+/g.
• Biodiesel yield of 95.5% is achieved from oleic acid with 5 cycles (> 81%).
• Biodiesel yield of 90.9% from Jatropha oil with AV of 17.2 mg KOH/g.
• Biodiesel yield of 93.2% from blended soybean oil with AV of 22.1 mg KOH/g.

Carbonaceous acids were synthesized from dealkaline lignin via solvothermal carbonization, pyrolysis and sulfonation. Carbonization of lignin in sub- and super-critical ethanol provided good surface properties with abundant functional groups (2.81 and 1.35 mmol [H+]/g) for the subsequent sulfonation to result in high active and stable catalysts for biodiesel production. Both catalysts (E-P400-2-SO3H and E-260-20-SO3H carbonized in sub- and super-critical ethanol) had high acid content of 5.35 and 5.05 (mmol [H+]/g), respectively. Highest biodiesel yields of 95.4% and 95.5% were obtained from the esterification of oleic acid at 80 °C with E-260-20-SO3H and E-P400-2-SO3H, respectively, with 5 cycles for E-260-20-SO3H (≥81.9% yield) and 3 cycles for E-P400-2-SO3H (≥84.6% yield). Both catalysts also applied to produce biodiesel from actual plant oils at 220 °C. High biodiesel yields of 90.9% and 93.2% were obtained from Jatropha and blended soybean oils with high acid value of 17.2 and 22.1 mg KOH/g, respectively.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 190, 5 August 2016, Pages 103–114
نویسندگان
, , , ,