A study of pyrolysis oil from soluble coffee ground using low temperature conversion (LTC) process

The pyrolysis process using the low temperature conversion (LTC) conditions was applied in a sample of soluble coffee ground at 380 °C and produced four fractions: pyrolysis oil, pyrolytic char, gas and acidic fraction in relative amounts of 50, 29, 15 and 6% [w/w], respectively. The composition chemistry of the pyrolysis oil was studied by FTIR: 1H and 13C NMR and GC–MS. The density, viscosity, sulfur content, calorific value and water content of the pyrolysis oil were also determined.