https://doi.org/10.1007/s10562-017-2114-5
“The reaction products were monitored by a Hewlett Packard 5890 series II gas chromatograph equipped with a GS-GASPRO column (60 m × 0.32 mm) connected via a 6-way gas sampling valve to a thermal conductivity detector (TCD). Measurements were recorded at 50 °C intervals (after holding at that temperature for 5 min) between 200 and 650 °C using a heating rate of 10 °C min−1. The CH4 conversion was calculated as follows:
Conversions of CH4 and CO2 are presented at the highest measured temperature (650 °C).”
“The catalyst activity of each sample was studied in a quartz fixed bed reactor placed inside a temperature controlled furnace (Carbolite type 3216, Tempatron, PID500/110/330). A sample of catalyst (0.2 g) was placed in a quartz tube (10 mm diameter, 1 mm thickness) between quartz wool plugs. A feed mixture of 100 mL min−1 comprising CH4:CO2:He equal to 5:5:90 was used in all catalytic tests. Gases were supplied from lecture bottles (CKGAS filled to 200 bar at 15 °C) and regulated using single stage CONCOA 302 series gas regulators. The flow of each gas was maintained using Bronkhorst UK model F-201CV mass flow controllers. Prior to testing, each catalyst was reduced in 30 mL min−1 H2 for 1 h at 300 °C. “