Abstract:
Fabrication of yarns or other shaped articles from materials in powder form (or nanoparticles or nanofibers) using carbon nanotube/nanofiber sheet as a platform (template). This includes methods for fabricating biscrolled yarns using carbon nanotube/nanofiber sheets and biscrolled fibers fabricated thereby.
Abstract:
The present disclosure relates to a polymer-based large-area carbon nanomesh and a method for preparing the same. More particularly, the present disclosure provides a method for preparing a carbon nanomesh such as graphene nanomesh, including: preparing a polymer nanofilm by coating a solution of a block copolymer or a polymer mixture thereof on a substrate; stabilizing the polymer nanofilm by annealing such that the polymer nanofilm is phase-separated, a hole-forming polymer is removed and, at the same time, a nanomesh-forming polymer is cyclized and forms a stabilized polymer nanomesh; and carbonizing the stabilized polymer nanomesh by annealing at high temperature to prepare a carbon nanomesh. Using the phase separation and cyclization, a large-area carbon nanomesh with superior activity can be prepared simply with high reproducibility in large scale.
Abstract:
A catalyst is provided, the catalyst comprising rods having mean length of 100 microns or less, the rods comprising a metal molybdate or tungstate, the metal being selected from the group consisting of iron, manganese, nickel, chromium, vanadium, aluminum, silver, titanium, copper, bismuth, and cobalt. A method of making such a catalyst is also provided.
Abstract:
The present invention relates to methods for producing metal-supported thin layer skeletal catalyst structures, to methods for producing catalyst support structures without separately applying an intermediate washcoat layer, and to novel catalyst compositions produced by these methods. Catalyst precursors may be interdiffused with the underlying metal support then activated to create catalytically active skeletal alloy surfaces. The resulting metal-anchored skeletal layers provide increased conversion per geometric area compared to conversions from other types of supported alloy catalysts of similar bulk compositions, and provide resistance to activity loss when used under severe on-stream conditions. Particular compositions of the metal-supported skeletal catalyst alloy structures can be used for conventional steam methane reforming to produce syngas from natural gas and steam, for hydrodeoxygenation of pyrolysis bio-oils, and for other metal-catalyzed reactions inter alia.
Abstract:
An assembly, such as for growing carbon nanotubes, includes a substrate including SiO2 and has a thickness of less than 500 μm. Further, the substrate is bendable and has a surface with non-flat or non-polished texture such that surface comprises raised and recessed features for receiving a coating, such as a catalyst. Carbon nanotubes may be anchored to and grow from the recessed features of the substrate.
Abstract:
An improved process for the preparation of nanostructured metal species-based films in a flame aerosol reactor is provided. The present invention also further provides improved nanostructured photo-watersplitting cells, improved dye sensitized solar cells and improved nanostructured p/n junction solar cells.
Abstract:
ANTI-POLLUTION POROUS FLEX PIPE, refers to ananti-pollution porous flex pipe with its walls essentially comprised by tapes formed by interlaced textile fibers, to which activated charcoal is added (6), in agglomerate, powder or granulated form, and the textile tapes being wound over it and glued among it in the helical direction, forming an air conducting acoustic flexible helical pipe which is a part of the combustion engines intake system used by the automotive industry, adding the activated charcoal (6) in the walls or in the pipe's external (1) or internal (3) lining.
Abstract:
A wire catalyst for hydrogenation reaction and/or dehydrogenation reaction comprises a metallic core and an oxide surface layer covering at least part of the surface thereof. The metallic core is electrically conductive so that the metallic core itself can generate heat by directly passing an electric current therethrough or electromagnetic induction. The oxide surface layer is made of an oxide of a metallic element constituting the metallic core. The oxide surface layer is provided with a porous structure having pores opening at the surface of the oxide surface layer. The catalytic material is supported in the pores of the oxide surface layer. When a shaped wire catalyst is manufactured, the shaping into a specific shape is made before the oxide surface layer having the porous structure is formed and the catalytic material is supported thereon.
Abstract:
A Fischer Tropsch (“FT”) unit includes at least one FT reactor tube. The FT reactor tube is configured to convert syngas into one or more hydrocarbon products. Inside the tube is a nano-sized catalyst particles dispersed in a micro-fibrous substrate. The FT reactor tube may be positioned within a cooling block that may be made of aluminum or another metal. The cooling block includes an aperture, wherein the FT reactor tube is housed within the aperture. At least one cooling channel is located on the cooling block. The cooling channel houses at least one cooling tube that is designed to dissipate the heat produced by the FT reaction.
Abstract:
Aspects of the invention relate to hydrogenation catalysts, and hydrogenation processes using these catalysts, having particular characteristics, in terms of the amount and type of metal hydrogenation component (or catalytic constituent), as well as the support or substrate. The catalyst compositions, comprising both a noble metal and a lanthanide element on a substantially non-porous substrate, provide advantageous performance characteristics, including conversion, selectivity, and activity stability, as demanded in industrial hydrogenation and selective hydrogenation applications.