In the present study, thermogravimetric analysis was used for investigation a bagasse pyrolysis. Multi‐period models were applied for evaluation of kinetics parameter based on the TG curve. The decomposition bagasse process was undergone four periods via the breakdown of each different chemical component in a sample. The dehydration occurred below 170°C; hemicellulose primarily and cellulose partially decomposed in a range of 170 to 318°C and cellulose continuously decomposed from 318 to 400°C. The temperature range of 400‐700°C for the last period showed the evidence of lignin decomposition. The study also identified activation energy constant (Ea), the pre‐exponential factor (A) and reaction order (n) for each period of pyrolysis process. The dependence of the breakdown of the specific chemical bond on the pyrolysis temperature was also proven by FTIR spectrum analysis.

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Sugarcane bagasse was characterized by thermogravimetric analysis (TGA) with the different heating rates, and nitrogen carrier from 30 to 800 oC. Through decreasing the sample's mass by temperature, the stage of thermal decomposition could be determined. Specifically, there were three stages of decomposition including moisture escape stage, decomposition of cellulose stage, hemicellulose and lignin decomposition stage. On the other hand, based on the results of TGA the activation energy of decomposition process was determined by the inverse of the Flynn‐Wall‐Ozawa (FWO) method and Kissinger‐Akahira‐Sunose (KAS) method. The calculated results were compared with the activation energy by the Coats‐Redfern method and Criado method in order to find the kinetics of bagasse pyrolysis process. Accordingly, when the conversion of reaction was lower than 75 %, corresponding to the decomposing process of hemicellulose and cellulose, the thermal decomposing process of bagasse obeyed diffusion kinetics of model D2, D3 and D4.

ZSM‐5 zeolite material (Si/Al ratio = 25) was synthesized with silica source of TEOS and TPAOH template. The zeolite is modified into proton form (HZSM‐5) with 343 m2/g of BET surface area, 324 m2/g of micropore area, 0.1491 cm3/g of micropore volume and 5.77 nm of BJH adsorption average pore width. Zinc oxide and iron oxide are dispersed onto HZSM‐5 catalyst surface with different contents by wet impregnation method. The results of HZSM‐5, Zn/HZSM‐5, Fe/HZSM‐5 catalyst materials still retain the micropore structure of ZSM‐5 zeolite. These materials are used as catalysts for furfural pyrolysis in the inert atmosphere (N2) with the temperatures ranged from 400 to 700 °C. The conversion of furfural to aromatic hydrocarbons on catalysts is evaluated by furfural conversion, conversion into aromatics and aromatic hydrocarbons selectivity. Result shows that 3 %Zn/HZSM‐5 and 2 %Fe/HZSM‐5 catalyst favor for furfural pyrolysis at 600 oC. The furfural conversion, the conversion into BTXN and the BTXN selectivity are respectively 48.36 %, 21.18 %, 16.18 % with 3 %Zn/HZSM‐5 catalyst and 64.41 %, 16.47 %, 26.81 % with 2%Fe/HZSM‐5 catalyst. These results are the basic research for the upgrade of pyrolysis oil into fuels.

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