کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7789957 | 1500641 | 2015 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pyrolytic and kinetic characteristics of Platycodon Grandiflorum peel and its cellulose extract
ترجمه فارسی عنوان
خصوصیات پیرولیتیک و جنبشی پوست پلات کیدون گراندیفلوروم و عصاره سلولز آن
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کلمات کلیدی
پوست پالیکودون گراند فلووروم، سلولز، پیرولیز، سینتیک،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
The pyrolytic and kinetic characteristics of a biomass waste material, namely Platycodon grandiflorum A. DC (P. G.) peel and its cellulose extract were studied at heating rates of 10, 30 and 50 °C/min under a nitrogen flow atmosphere. The most probable mechanism function and activation energy pre-exponential factors were calculated by using the Popescu, FWO and KAS methods. The three stages appeared during pyrolysis include: moisture evaporation, primary devolatilization and residual decomposition. Significant differences in the average activation energy, thermal stability, final residuals and reaction rates of the P. G. peel and its cellulose extract were observed. Stage II of the P. G. peel and its cellulose extract could be described by the function Avrami-Erofeev [âln(1 â α)]3 and the function chemical reaction (1 â α)â0.5, respectively. The average activation energy of P. G. peel and its cellulose extract were 157 and 196 kJ/mol, respectively. Kinetic compensation effects of the pre-exponential factors and activation energy were also observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 117, 6 March 2015, Pages 644-649
Journal: Carbohydrate Polymers - Volume 117, 6 March 2015, Pages 644-649
نویسندگان
Hong-Wei Qiu, Quan-Cheng Zhou, Jie Geng,