Figure 4
(a)The composition of gas phase at the different height of the catalytic column (inset: the photograph of the products at the sample export 8.); (b) The composition of liquid phase at the different position of the catalytic column (inset: the photograph of the products in the reboiler 14.); (c) The variation of bio oil conversion with the operation time in 100 h and inset shows the SEM image of the CNTs on steel mesh after used for about 100 h. (Temperatures: the catalytic column, 493 K; inlet of oil feed (b1), 408 K; inlet of methanol (b2), 388 K; reboiler (14), 388 K; condenser 1, 378 K; condenser 2, fully cooled. Flow rate: oil (b1), 10.85 × 10−3 mol·min−1; methanol (b2), 1.73 × 10−3 mol·min−1.)
