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Liquefaction of sweet sorghum stalk (SSS) in supercritical methanol was carried out under different conditions, including temperature, holding time, and SSS-to-methanol ratio. Each reaction mixture was filtrated to afford residue and bio-oil (BO, i.e., methanol-soluble portion). The optimal conditions were determined to be 300°C and 30min based on the BO yield and the maximum yield of BO is 40.5wt%...
Understanding the chemical composition of organic nitrogen compounds (ONCs) in biomass and its derived liquids is important because of their negative impacts on the environment during biomass utilization as fuel. In this study, X-ray photoelectron spectrometer (XPS) was used to identify the nitrogen forms on sweet sorghum stalk (SSS) surface and gas chromatograph/mass spectrometer (GC/MS) together...
Bio-oils (BOs) obtained from sweet sorghum stalk (SSS) methanolysis (BOm) and ethanolysis (BOe) at 300°C for 30min were analyzed with an electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (ESI FT-ICR MS). In negative-ion mode, the predominant compounds in BOm and BOe are On (n=1–10) class species with double bond equivalent (DBE) values of 1–14 and carbon atom numbers...
Nowadays, even though countries take measures to control the population, it is reported that the total number of global population has reached 7billion. In 21st century, the human society is still faced with the problems about the unprecedented consumption of material wealth and the unprecedented increase in population [1]. So the researchers should study the dynamic changes of resources and population...
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