摘要:
The invention relates to the use of a solid catalyst for opening hydrocarbon rings, which is comprised of: a mesoporous zirconium oxide (ZrO2) support, optionally doped with silica; tungsten oxide (WO3) in a quantity such that the mean number of tungsten (W) atoms by nm2 of specific area of zirconium oxide (ZrO2) ranges between 0.1 to 9, and; 0.1 to 5 %, with regard to the total weight of the solid catalyst, iridium. The invention also relates to a method for opening the ring of cyclic hydrocarbon compounds by using a catalytic composition of the aforementioned type.
摘要:
Some embodiments are directed to a method for the preparation of defect-free nanosized synthetic zeolite materials, to the defect-free nanosized synthetic zeolite materials, to stable colloidal suspensions of the defect-free synthetic zeolite materials, and to the use of the defect-free nanosized synthetic zeolite materials and the stable colloidal suspensions in various applications.
摘要:
The present invention relates to a method for the preparation of faujasite nanocrystals, to faujasite nanocrystals, to a method for the preparation of a stable colloidal suspension of faujasite nanocrystals, to a stable colloidal suspension of faujasite nanocrystals, and to the use of said faujasite nanocrystals and said stable colloidal suspension of faujasite nanocrystals in various applications.
摘要:
The invention relates to a method for reducing the content of polycyclic aromatic hydrocarbons (PAH) of a liquid medium, said PAH's optionally containing, in their cyclic structure, one or more heteroatoms selected among N, O and S, comprising: (a) placing the liquid medium in contact with at least one appropriate oxidizing agent in the presence of at least one hemoprotein selected among hemoglobins and myoglobins, immobilized on or in finely divided solid mineral particles having an average size determined by laser granulometry ranging from 5 nm to 1 mm, preferably from 10 nm to 100 µm, in reaction conditions that permit the oxidation of polycyclic aromatic hydrocarbons optionally sulfurated and/or nitrogenated and/or oxidized by the oxidizing agent, and; (b) the separation of the immobilized hemoprotein from the liquid medium.