Abstract:
The present invention provides for a device for reducing a volatile organic compound (VOC) content of a gas comprising a manganese oxide (MnOx) catalyst. The manganese oxide (MnOx) catalyst is capable of catalyzing formaldehyde at room temperature, with complete conversion, to CO2 and water vapor. The manganese oxide (MnOx) catalyst itself is not consumed by the reaction of formaldehyde into CO2 and water vapor. The present invention also provides for a device for reducing or removing a particle, a VOC and/or ozone from a gas comprising an activated carbon filter (ACF) on a media that is capable of being periodically regenerated.
Abstract:
A solid heterogeneous catalyst consisting of a metal component and an organic ligand polymer, wherein the metal component is one or more of Rh, Ir or Co, the organic ligand polymer is a polymer having a large specific surface area and hierarchical porosity formed by polymerizing an organic ligand monomer containing P and alkenyl group and optional N via a solvothermal polymerization process, the metal component forms coordinated bond with the P atom or N in backbone of the organic ligand polymer and exists in a monoatomic dispersion state; when the catalyst is used in an olefin hydroformylation reaction, the metal component and the P and/or N atom form in situ an intermediate active species similar to homogeneous catalyst due to the coordination effect, and the catalyst has an excellent catalytic property, can be easily separated, and has a relatively high stability.
Abstract:
Pyrolysis of machined osseous tissue results in a monolith of carbon interwoven within the HA scaffold native to the original tissue. This HA framework prevents the collapse of the carbon to dense forms during pyrolysis. Upon removal of the HA scaffold after pyrolysis, a monolith that preserves the macroscopic form of the carbon remains. The monolith is placed in a solution of catalyst, noble metal ions for example, which is then reduced to facilitate the precipitation of nanoparticles of the catalyst. The novelty of this invention is that a high number of particles are contained within a relatively small, extremely high surface area solid support. The current invention demonstrates that the pyrolysis of intact bovine cortical bone produces high-carbon-surface-area monoliths, which can be used as a scaffold for reusable catalysts.
Abstract:
The invention relates to a method for producing a catalyst system having at least one catalytically active component, wherein the catalytically active component comprises at least one metal, wherein first a spherical activated carbon used as a catalyst carrier is subjected to an oxidation. Subsequently, the catalytically active component is applied, optionally followed by a reduction of the catalyst system obtained in said manner.
Abstract:
The present invention relates to a catalyst composition comprising cobalt molybdenum and optionally one or more elements selected from the group consisting of alkali metals and alkaline earth metals on a carbon support wherein said cobalt and molybdenum are in their metallic form. It was surprisingly found that the selectivity for alcohols can be increased by using the carbon supported cobalt molybdenum catalyst as described herein in a process for producing alcohols from a feed stream comprising hydrogen and carbon monoxide. Furthermore, it was found that the catalyst of the present invention has a decreased selectivity for CO2 and can be operated at relatively low temperature when compared to conventional catalysts. Moreover, a method for preparing the carbon supported cobalt molybdenum catalyst composition and a process for producing alcohols using said carbon supported cobalt molybdenum catalyst composition is provided.
Abstract:
The present invention is to provide a carbon powder that can provide a catalyst having excellent durability and a catalyst. A carbon powder for catalyst of the present invention is a carbon powder containing as a main component carbon, which has a BET specific surface area per unit weight of 900 m2/g or greater, and a ratio R′ (D′/G intensity ratio) of peak intensity for a D′-band (D′ intensity) measured in the vicinity of 1620 cm−1 to peak intensity for a G-band (G intensity) measured in the vicinity of 1580 cm−1 by Raman spectroscopy of 0.6 or less.
Abstract:
A method of using a metal organic framework (MOF) comprising a metal ion and an at least bidendate organic ligand to catalytically detoxify chemical warfare nerve agents including exposing the metal-organic-framework (MOF) to the chemical warfare nerve agent and catalytically decomposing the nerve agent with the MOF.
Abstract:
Methods for fabricating a membrane with an organosilica material which is a polymer comprising independent units of Formula [Z3Z4SiCH2]3 (I), wherein each Z3 represents a hydroxyl group, a C1-C4 alkoxy group or an oxygen atom bonded to a silicon atom of another unit or an active site on the support and each Z4 represents a hydroxyl group, a C1-C4 alkoxy group, a C1-C4 alkyl group, an oxygen atom bonded to a silicon atom of another unit or an active site on the support are provided. Methods of removing a contaminant from a hydrocarbon stream are also provided.
Abstract:
Compositions useful for treating the exhaust gases of diesel engines contain zirconium oxide, silicon oxide and at least one oxide of at least one element M selected from among titanium, aluminum, tungsten, molybdenum, cerium, iron, tin, zinc, and manganese, in the following mass proportions of these different elements: silicon oxide: 5%-30%; M-element oxide: 1%-20%; the balance being zirconium oxide; such compositions also have an acidity, as measured by the methylbutynol test, of at least 90% and are prepared by placing a zirconium compound, a silicon compound, at least one M-element compound and a basic compound in a liquid medium, thereby generating a precipitate, maturing the precipitate in a liquid medium and separating and calcining the precipitate.
Abstract:
A composition for in situ remediation of soil and groundwater contaminated with hydrocarbons. The composition includes an adsorbent, such as activated carbon, capable of adsorbing the hydrocarbons. The composition also includes a sulfate-containing compound that releases sulfate over a period of time, e.g., a time-release compound that may include calcium sulfate. The composition includes a nutrient system for promoting growth of facultative anaerobes, in the soil or provided in the composition itself. In some embodiments, the nutrient system includes a sulfide scavenging agent such as iron sulfate. In the same or other embodiments, the nutrient system includes at least one of a nitrogen source and a phosphorous source.