摘要:
Catalytic process for the at least partial conversion of a gaseous mixture containing carbon monoxide and hydrogen into a mixture of hydrocarbons, comprising a step of bringing said gaseous mixture into contact with a solid catalyst, said solid catalyst comprising - a porous support comprising a composite material comprising SiC and a titanium carbide (composite referred to as "SiC/TiC") and/or a titanium oxide (composite referred to as "SiC/TiO 2 "), and - an active phase. The support may be prepared in the form of grains, beads, or extrudates, or in the form of cylinders or sheets of cellular foam. Its molar content of titanium with respect to the molar sum Si + Ti is advantageously between 0.5% and 15%.
摘要:
The invention relates to a method for producing a dispersion of graphene particles or flakes in a liquid medium L, including the following steps: (a) providing a bar or block (5) of solid graphite material M; (b) rubbing said material M against the surface S (2) of a substrate so as to create a rubbing trace of said material M on said surface S (2) of said substrate; (c) dipping said substrate in a liquid medium L (6) and subjecting said liquid medium L (6) to ultrasounds so as to obtain a dispersion of graphene particles or flakes in said liquid medium L (6), wherein steps (b) and (c) can be carried out at least partially in series, or at the same time.