Abstract: The invention relates to an at least partly stratified (such as at least partly dual stratified) charge combustion engine, especially CAI (combustion assisted ignition), HCC, HCSI and HCCI engine, in which the combustion of a hydrocarbon containing fuel generating a flame emitting photon is operated in a chamber with a wall provided with a cerium oxide-carbon containing coating, said coating further comprising at least comprising oxides of the followings elements Pr, Nd, La and at least Y and/or Zr. The engine of the invention enables a catalytic reduction of NOx exhaust rate.

Abstract: The invention relates to an at least partly stratified (such as at least partly dual stratified) charge combustion engine, especially CAI (combustion assisted ignition), HCC, HCSI and HCCI engine, in which the combustion of a hydrocarbon containing fuel generating a flame emitting photon is operated in a chamber with a wall provided with a cerium oxide-carbon containing coating, said coating further comprising at least comprising oxides of the followings elements Pr, Nd, La and at least Y and/or Zr. The engine of the invention enables a catalytic reduction of NOx exhaust rate.

Abstract: Hydrocarbon transformations through radical reaction are carried out in presence of: a carbon nano/meso precursor, an aluminium containing support, and a lanthanide catalyst deposited on said aluminium containing support.

Abstract: Catalytic system combining an aluminium or iron containing catalytic support, a rare earth containing porous deposit, carbon nanoparticles and a carbon containing structure making bonds between carbon nanoparticles.

Abstract: Hydrocarbon transformations through radical reaction are carried out in presence of: a carbon nano/meso precursor, an aluminium containing support, and a lanthanide catalyst deposited on said aluminium containing support.

Abstract: The combustion process is carried out in presence of a primary catalyst coating which is treated when required by means of cerium/europium compound in presence of water vapor and advantageously in presence of a refractory material, such as a clay, a hydrated clay.

Abstract: Catalytic system combining an aluminium or iron containing catalytic support, a rare earth containing porous deposit, carbon nanoparticles and a carbon containing structure making bonds between carbon nanoparticles.

Abstract: The combustion process is carried out in presence of a primary catalyst coating which is treated when required by means of cerium/europium compound in presence of water vapor and advantageously in presence of a refractory material, such as a clay, a hydrated clay.