کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5409574 | 1506547 | 2016 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics and thermodynamic parameters of ionic liquid pretreated rubber wood biomass
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The impact of ionic liquids (ILs) namely 1-butyl-3-methylimidazolium chloride ([BMim][Cl]) and 1-butyl-3-methylimidazolium acetate ([BMIM][OAc]) on rubber wood pyrolysis kinetic and thermodynamic parameters were investigated using thermogravimetric analysis (TGA). The ILs treated and untreated samples were characterized with FT-IR and elemental (CHNS) analyses. The activation energy for untreated and ILs treated rubber wood (RW) were determined using the Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS) and Starink methods. The average activation energy calculated using FWO, KAS and Starink methods for untreated rubber wood was 120.15Â kJ/mol, 117.10Â kJ/mol and 117.60Â kJ/mol, [BMIM][Cl] treated rubber wood was 87.32Â kJ/mol, 77.73Â kJ/mol, and 81.16Â kJ/mol, while [BMIM][OAc] treated rubber wood was 85.64Â kJ/mol, 76.63Â kJ/mol, and 80.47Â kJ/mol, respectively. Starink method was further used to determine the pre-exponential factor and thermodynamic parameters of untreated and ILs treated samples. The thermo kinetics and thermodynamic parameters indicate that ILs pre-treatment decreases the thermal stability of the rubber wood. From FTIR analysis, it was observed that ILs pre-treatment affected the chemical composition of rubber wood. Elemental analysis showed that ILs treated RW has a higher content of Hydrogen/Carbon ratio because of the separation of lignin and hemicellulose during pre-treatment. It was concluded that ILs pre-treatment provided a potential way to improve the thermal conversion efficiency of rubber wood.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 223, November 2016, Pages 754-762
Journal: Journal of Molecular Liquids - Volume 223, November 2016, Pages 754-762
نویسندگان
Amir Sada Khan, Zakaria Man, Mohammad Azmi Bustam, Chong Fai Kait, Zahoor Ullah, Asma Nasrullah, Muhammad Irfan Khan, Girma Gonfa, Pervaiz Ahmad, Nawshad Muhammad,