A Preliminary Study on the Components of Cotton Stalk Wood Vinegar by TG-FTIR

Wood vinegar is a product of agriculture and forestry residues pyrolysis with insecticidal, antibacterial effect, and is even found to have health care. In recent years, wood vinegar is being taken seriously more and more by people. Cotton stalk wood vinegar is derived from cotton stalk pyrolysis. It is the gases generated from the pyrolysis of cottons talk, changing into liquid products through condensation, its compositions are complex, mainly are acid, phenol, ketone, alcohol and other substances. This paper studied initially the way of the compositions formation about cotton wood vinegar, drawing the following conclusions: The initial phrase of cotton stalk pyrolysis mainly occurred the precipitation of free water and a small amount of organic acid, In the pre-carbonization phrase, a small amount of volatile gases composed by small molecules were released, The main pyrolysis phrase, corresponding to the maximum infrared absorption spectrum, was the main phrase during which the composition of wood vinegar were produced, At last, some phenols we reproduced in charring phrase. During the prolysis of cotton stalk, some organics generated continued to the charring stage like phenols.