Heating alternative solvents
As well as water, heating of both Silicone oil and Methanol was investigated. Silicone oil has the widest operating temperature range of the three solvents tested, enabling testing of higher temperature setpoints Whereas Methanol has the lowest boiling point of the three solvents at 64.7 °C.
The data in graph 3 shows a comparison of all three solvents in the glass reactor R1. For this study, Methanol was heated to 55 °C, Silicone oil and water were heated to 80 °C. The Silicone oil was heated both with and without an external circulator.
The results showed that methanol achieved a 40 °C temperature increase at 5 °C/min in 8 minutes. Silicone oil (with circulator) performed similarly with a slight overshoot and took 20 minutes to reach the set temperature. The results also demonstrate greater heating rates were achieved when an external circulator was used. These samples also showed little-to-no temperature overshoot.
Data from the stainless-steel reactor show similar results (Graph 4).