Metallic monolith catalysts

Pd-Zr/SBA-15/Al2O3/FeCrAl and Pt-Sn-Li/Al2O3/FeCrAl

for the exothermic catalytic combustion of methane and the endothermic dehydrogenation of dodecane were placed respectively into the inner tube and annular space of a tubular jacket reactor that could be heated by an external electric furnace. Their thermal coupling was tested. The experimental results showed that the oven temperature was slightly lower than that of the metallic monolith catalyst beds

indicating that the heat required for dodecane dehydrogenation reaction came indeed from that released by methane combustion

at least mostly

and thus demonstrating indirect thermal coupling between the two reactions taking place on the metallic monolith catalysts. Under the reaction conditions of pressure 0.1 MPa

oven temperature 743.15 K

GHSV 7.5 ml·m-2·h-1(3.5% CH4/air feed)

C12H26 LHSV 0.315 ml·m-2·h-1

and molar ratio of hydrogen to alkane 4

methane was converted at 100%

C12H26 conversion was 6.3%

and C12H24 selectivity was 71.5%.