Abstract: The present invention relates to carbon nanotubes having a pore volume of 0.94 cm3/g or more, and being an entangled type, a method of manufacturing the same, and a positive electrode for a primary battery which comprises the same.

Abstract: The present invention is directed to the preparation of a cobalt containing catalyst, a precipitate as an intermediate product, a Fischer-Tropsch catalyst and a process for producing normally gaseous, normally liquid and optionally normally solid hydrocarbons from synthesis gas. The precipitate and catalyst comprise crystalline Co(OH)(CO3)0.5, the crystals are needle shaped and have a surface area of at least 80 m2/g dry precipitate.

Abstract: A Ni—Al2O3@Al2O3—SiO2 catalyst with coated structure is provided. The catalyst has a specific surface area of 98 m2/g to 245 m2/g, and a pore volume of 0.25 cm3/g to 1.1 cm3/g. A mass ratio of an Al2O3 carrier to active component Ni in the catalyst is Al2O3:Ni=100:4˜26, a mass ratio of the Al2O3 carrier to an Al2O3—SiO2 coating layer is Al2O3:Al2O3—SiO2=100:0.1˜3, and a molar ratio of Al to Si in the Al2O3—SiO2 coating layer is 0.01 to 1. Ni particles are distributed on a surface of the Al2O3 carrier in an amorphous or highly dispersed state and have a grain size less than or equal to 8 nm, and the coating layer is filled among the Ni particles.

Abstract: The disclosure relates to a method for producing a component, in particular a vehicle component or an engine component, such as a piston of an internal combustion engine. The method comprises forming a first body region, in particular by means of casting or forging. The method includes forming a second body region, which is connected to the first body region, from an aluminium alloy or an iron-based alloy or a copper-based alloy by means of an additive manufacturing method. The second body region is alloyed in such a manner that it has higher thermal stability, higher mechanical strength or higher wear resistance upon tribological stressing than the first body region.

Abstract: The present invention describes an improved process for the commercial scale production of high-quality catalyst materials. These improved processes allow for production of catalysts that have very consistent batch to batch property and performance variations. In addition these improved processes allow for minimal production losses (by dramatically reducing the production of fines or small materials as part of the production process). The improved process involves multiple steps and uses calcining ovens that allow for precisely control temperature increases where the catalyst is homogenously heated. The calcining gas is released into a separate heating chamber, which contains the recirculation fan and the heat source.

Abstract: Supported catalyst for use in a process for the synthesis of methanol, characterized in that the supported catalyst comprises indium oxide in the form of In2O3 and at least one noble metal being palladium, Pd, wherein both indium oxide and at least one noble metal are deposited on a support remarkable in that the supported catalyst is a calcined supported catalyst comprising from 0.01 to 10.0 wt. % of palladium and zirconium dioxide (ZrO2) in an amount of at least 50 wt. % on the total weight of said supported catalyst.

Abstract: An electrocatalyst comprises a crumpled transition metal dichalcogenide support loaded with catalytic metal nanoparticles through spontaneous reduction reactions. The support can be prepared by hydrothermal conversion of 2D nanosheets to 3D hierarchically crumpled sheets. As an example, using crumpled MoS2 as a support, highly tunable Ru loadings were obtained using the electrostatic interaction between MoS2 and RuCl3 in solution. Control over Ru loading was leveraged to produce Ru—MoS2 electrocatalysts that demonstrate different nitrogen reduction reaction activities, and which show varying resistance to electrochemical sintering and deactivation. Further, these high surface area materials can be utilized for many applications, including electrocatalysts, supercapacitors, and batteries.

Abstract: Catalysts for selective production of hydrogen peroxide and methods of making and using thereof have been developed. The catalysts include an alloyed or doped metal oxide which permits tuning of the catalytic properties of the catalysts for selection of a desired pathway to a product, such as hydrogen peroxide. The catalysts may be incorporated into electrochemical or photochemical devices.

Abstract: The present invention provides a process of using an alloy nanoparticle catalyst to catalyze one pot chemical reactions for synthesizing functional polymers with controlled polymerization and properties. In particular, the present invention provides a process of using an AuPd NP catalyst to catalyze one pot chemical reactions for synthesizing polybenzoxazole with controlled polymerization and improved chemical stability.

Abstract: The present disclosure relates to the field of Fischer-Tropsch synthesis reaction catalysts, and discloses a pure phase ?/?? iron carbide catalyst for Fischer-Tropsch synthesis reaction, a preparation method thereof and a Fischer-Tropsch synthesis process, wherein the method comprises the following steps: (1) subjecting the nanometer iron powder or a nano-powder iron compound capable of obtaining the nanometer iron powder through in-situ reduction and H2 to a surface purification treatment at the temperature of 250-510° C.; (2) pretreating the material obtained in the step (1) with H2 and CO at the temperature of 80-180° C., wherein the molar ratio of H2/CO is 1.2-2.8:1; (3) carrying out carbide preparation with the material obtained in the step (2), H2 and CO at the temperature of 180-280° C., wherein the molar ratio of H2/CO is 1.0-3.0:1.

Abstract: A method for preparing a metal complex catalyst by (A) obtaining a precipitate by bringing a metal precursor solution comprising a zinc (Zn) precursor, a ferrite (Fe) precursor, and water into contact with a basic aqueous solution; (B) obtaining a zinc ferrite catalyst by filtering and calcining the precipitate; and (C) supporting an acid onto the zinc ferrite catalyst, and a metal complex catalyst prepared thereby.

Abstract: Aspects of the present disclosure generally relate to semiconductor nanoparticles, metal-semiconductor hybrid structures, processes for producing semiconductor nanoparticles, processes for producing metal-semiconductor hybrid structures, and processes for producing conversion products. In an aspect is provided a process for producing a metal-semiconductor hybrid structure that includes introducing a first precursor comprising a metal from Group 11-Group 14 to an amine and an anion precursor to form a semiconductor nanoparticle comprising the Group 11-Group 14 metal; introducing a second precursor comprising a metal from Group 7-Group 11 to the semiconductor nanoparticle to form a metal-semiconductor mixture; and introducing the metal-semiconductor mixture to separation conditions to produce the metal-semiconductor hybrid structure.

Abstract: The present invention relates to a catalyst which is a composite oxide including at least one element X selected from the group consisting of elements belonging to Groups 3 to 6 of the periodic table, and at least one element Z selected from the group consisting of elements belonging to Group 14 of the periodic table, wherein the catalyst has mesopores.

Abstract: A method for producing a catalyst, including a slurry preparation step of preparing a slurry comprising a Mo compound, an Fe compound, a Bi compound, and an additive having a decomposition temperature of 500° C. or less; a drying step of drying the slurry to obtain a dried material; and a calcination step of calcining the dried material to obtain a calcined material, wherein the calcination step comprises a step of raising temperature of a calcination atmosphere to a predetermined temperature, and a temperature raising rate is 10° C./min or less at least at a temperature equal to or lower than the decomposition temperature of the additive.

Abstract: A visible light photocatalyst coating includes a metal oxide that in the presence of a organic contaminate that absorbs at least some visible light or includes the metal oxide and an auxiliary visible light absorbent, where upon absorption of degradation of the organic contaminate occurs. Contaminates can be microbes, such as bacteria, viruses, or fungi. The metal oxide is nanoparticulate or microparticulate. The metal oxide can be TiO2. The coating can include an auxiliary dye having an absorbance of light in at least a portion of the visible spectrum. The coating can include a suspending agent, such as NaOH. The visible light photocatalyst coating can cover a surface of a device that is commonly handled or touched, such as a door knob, rail, or counter.

Abstract: Provided herein are photocatalytic carbon filters for the removal impurities such as microorganisms, organic compounds, algal toxins, and their degradation by-products from water and wastewater. The photolytic carbon filters comprise a porous titanium substrate comprising TiO2 nanotube arrays and multi-wall carbon nanotubes disposed on the TiO2 nanotube arrays. Also provided herein are methods of manufacture and methods of use of the disclosed photocatalytic carbon filters.

Abstract: Provided are an intermetallic compound having high stability and high activity, and a catalyst using the same. A hydrogen storage/release material containing an intermetallic compound represented by formula (1): RTX . . . (1) wherein R represents a lanthanoid element, T represents a transition metal in period 4 or period 5 in the periodic table, and X represents Si, Al or Ge.

Abstract: The present disclosure discloses a multistage nanoreactor catalyst and preparation and application thereof, belonging to the technical field of synthesis gas conversion. The catalyst consists of a core of an iron-based Fischer-Tropsch catalyst, a transition layer of a porous oxide or porous carbon material, and a shell layer of a molecular sieve having an aromatization function. The molecular sieve of the shell layer can be further modified by a metal element or a non-metal element, and the outer surface of the molecular sieve is further modified by a silicon-oxygen compound to adjust the acidic site on the outer surface and the aperture of the molecular sieve, thereby inhibiting the formation of heavy aromatic hydrocarbons. According to the disclosure, the shell layer molecular sieve with a transition layer and a shell layer containing or not containing auxiliaries, and with or without surface modification can be prepared by the iron-based Fischer-Tropsch catalyst through multiple steps.

Abstract: A manufacturing method includes: (1) providing M-M? nanowires, wherein M? is at least one sacrificial metal different from M; and (2) subjecting the M-M? nanowires to electrochemical de-alloying to form jagged M nanowires.

Abstract: A process for the local hardening of a workpiece by means of local induction hardening includes performing a local perlitization grain transformation on the workpiece after a local inductive diffusion heat treatment and before a local induction hardening on the workpiece.