Hydrogen production from bio-oil by chemical looping reforming
Hydrogen is a green energy carrier. Chemical looping reforming of biomass and its derivatives is a promising way for hydrogen production. However, the removal of carbon dioxide is costly and inefficient with the traditional chemical absorption methods. The objective of this article is to find a new material with low energy consumption and high capacity for carbon dioxide storage. A metal organic framework (MOF) material (e.g., CuBTC) was prepared using the hydrothermal synthesis method. The synthesized material was characterized by X-ray diffraction, −196 °C N2 adsorption/desorption isotherms, and thermogravimetry analysis to obtain its physical properties. Then BET, t-plot, and density functional theory (DFT) methods were used to acquire its specific surface area and pore textural properties. Its carbon dioxide adsorption capacity was evaluated using a micromeritics ASAP 2000 instrument. The results show that the decomposition temperature of the synthesized CuBTC material is 300 °C. Besides, high CO2 adsorption capacity (4 mmol g−1) and low N2 adsorption capacity were obtained at 0 °C and atmospheric pressure. These results indicate that the synthesized MOF material has a high efficiency for CO2 separation. From this study, it is expected that this MOF material could be used in adsorption and separation of carbon dioxide in chemical looping reforming process for hydrogen production in the near future.
KeywordsCarbon dioxide Hydrogen Biomass pyrolysis Bio-oil Metal organic frameworks (MOFs) Adsorption and separation
This study is financially supported by the National Basic Research Program of China (973 Program) (Grant No. 2010CB732206), the National Natural Science Foundation of China (Grant No. 51076031), the Jiangsu Natural Science Foundation (Grant No. BK20130615), and the China Postdoctoral Science Foundation (Grant No. 2012M520978).