Surface modes of catalytic ignition of flammable gases over noble metals

The features of catalytic ignition of 2H(2) + O-2 and (70% H-2 + 30% C2H6) + air mixtures over Pd wire are established. It is shown that the catalytic wire or foil is heated unevenly before ignition: initial ignition centers always appear. With sequential ignitions, a clearly observed ignition center changes its location on the wire with every succeeding ignition.

Automated summary

The experimental observation shows that the catalytic wire or foil is heated unevenly before ignition, and initial ignition centers always appear. With sequential ignitions, a clearly observed ignition center changes its location on the wire with every succeeding ignition.