124results about "Oxy/sulfo carbides" patented technology

The invention relates to a method for producing dimeric and / or trimeric silicon compounds, in particular silicon halogen compounds. The claimed method is also suitable for producing corresponding germanium compounds. The invention also relates to a device for carrying out said method to the use of the produced silicon compounds.

Compositions including oxycarbide-based nanorods and / or carbide-based nanorods and / or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including oxycarbide-based nanorods and / or carbide based nanorods and / or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are also provided. The compositions and rigid porous structures of the invention can be used either as catalyst and / or catalyst supports in fluid phase catalytic chemical reactions. Processes for making supported catalyst for selected fluid phase catalytic reactions are also provided. The fluid phase catalytic reactions catalyzed include hydrogenation, hydrodesulfurisation, hydrodenitrogenation, hydrodemetallisation, hydrodeoxigenation, hydrodearomatization, dehydrogenation, hydrogenolysis, isomerization, alkylation, dealkylation and transalkylation.

The present disclosure provides a series of new and improved porous polyamide aerogels derived from multifunctional aromatics that combine the high mechanical strength of aramids with the pore structure of aerogels. The polyamide aerogels have a hyperbranched structure, relatively low density, high porosity and may be derived from functionalized monomers having more aromatic groups than functional groups. The present disclosure also provides a new method for producing the porous polyamide aerogels by polymerizing an aromatic multifunctional carboxylic acid or a ferrocene multifunctional carboxylic acid with a polyfunctional aromatic isocyanate at moderate reaction conditions followed by drying with liquid CO2. Also disclosed are various methods of use of these polyamide aerogels in a variety of applications.

The present invention belongs to the field of inorganic nonmetallic materials, and relates to a synthetic method of high-purity ultrafine ZrC-SiC composite powders. The synthetic method comprises the following steps: taking only zirconium silicate or zirconium silicate added with one or both of zirconium oxide or colloidal silica as a zirconium source and a silicon source material, taking sucrose or glucose as a carbon source material, and taking acrylamide monomer and a methylene-bisacrylamide cross-linking agent as a gel material to prepare the high purity ultrafine ZrC-SiC composite powders. The ZrC-SiC composite powders synthesized by the synthetic method provided by the present invention are mixed very uniformly and are quite high in purity, and the purity is greater than or equal to 99%, and the particle size d is less than or equal to 50 [mu]m. An aqueous pulp containing acrylamide monomer and the methylene bisacrylamide cross-linking agent is subjected to in-situ gel curing, C can closely coat the surfaces of solid phase powder particles very uniformly, so that segregation of raw materials in dehydration and reaction processes is avoided, and carbothermal reduction synthesis reaction can be carried out fully.