Abstract: There is provided a thermal reactor (100) comprising: a vessel (101), said vessel comprising: a gas inlet (102), an outlet (103), a gas permeable cage (104) arranged in the vessel (101), and in fluid connection to the gas inlet (102), wherein the vessel (101) and the cage (104) are provided with a mutual gas outlet (103), and temperature generating means (105:105?) arranged to create a thermal reaction zone (106) within the cage (104), wherein the cage (104) is provided with holes (107), and wherein a first subset of the holes (107?) is arranged along at least a portion of a first circumferential surface (110) of the cage (104) and a second subset of the holes (107?) is arranged along at least a portion of a second circumferential surface (111) of the cage (104), wherein the first (110) and second (111) circumferential surfaces are offset and non-parallel, and the first subset of holes (107?) and the second subset of holes (107?) are mutually distinct.

Abstract: There is provided a method for the synthesis of nitrogen oxides (NOx) comprising the steps of providing a gas mixture comprising oxygen and nitrogen; and heating the gas mixture to a temperature of at least 2300 K at a pressure of 10-100 bar in a thermal reactor forming a gas mixture comprising NOx. There is also provided a method for the production of HNO3.

Abstract: A gas generator for an airbag includes a storage container and at least one chamber defined by the storage container. The at least one chamber infludes a metal wall and contains at least gaseous hydrogen. A coating layer of iron oxide is disposed on at least a surface portion of the metal wall to prevent diffusion of hydrogen atoms through the metal wall.

Abstract: A gas generator for an airbag includes a storage container and at least one chamber defined by the storage container. The at least one chamber includes a metal wall and contains at least gaseous hydrogen. A coating layer of iron oxide is disposed on at least a surface portion of the metal wall to prevent diffusion of hydrogen atoms through the metal wall.