Embodiments of the present invention include a filter element for decomposing contaminants including a substrate, and a photocatalytic composition comprising at least a photocatalyst and a co-catalyst. The embodiments of the present invention also includes a system for decomposing contaminants including a substrate, and a photocatalytic composition comprising at least a photocatalyst and a co-catalyst; and a method using the system.

Methods and systems for treating volatile organic compounds (VOCs) generated in a hydrocarbon treating process are disclosed. An effluent stream containing the VOCs, as well as carbon dioxide (CO.sub.2) is combined with hot exhaust gas from a turbine and provided to a waste heat recovery unit (WHRU). The WHRU is adapted to contain a catalyst bed containing oxidation catalyst capable of effecting the oxidation of the VOCs. The temperature of the catalyzing reaction can be tailored based on the position of the catalyst bed within the temperature gradient of the WHRU. The methods and systems described herein solve the problem of effecting the removal of VOCs from the effluent. Heating the CO.sub.2-containing effluent in the WHRU also lend buoyancy to the effluent, thereby facilitating its dispersal upon release.

Disclosed is a methane oxidation catalyst, and methods of use, the catalyst having a support comprising alumina doped with lanthanum and comprising platinum and palladium as the principle active phases. The platinum and palladium are present in the catalyst in a weight ratio of between 0.20:1.0 and 0.75:1.0, at an amount effective 5 for producing a product gas having reduced levels of methane as compared to a source gas prior to catalysis. Selected catalysts disclosed herein exhibit a capacity for sulfur and water resistance.

The present invention relates to a method for preparing an alumina supported perovskite type oxide composition, to an alumina supported perovskite type oxide composition and to the use of such an alumina supported perovskite type oxide composition in catalytic systems in emission control applications.

The present invention relates to the technical field of flue gas denitration catalysts, and discloses a hydrogenated TiO.sub.2 denitration catalyst and a preparation method and use thereof. The hydrogenated TiO.sub.2 denitration catalyst has a crystal form of anatase form, with oxygen vacancies and surface hydroxyl groups; wherein the hydrogenated TiO.sub.2 denitration catalyst contains TiO.sub.2, SO.sub.3 and P.sub.2O.sub.5, and based on the total weight of the hydrogenated TiO.sub.2 denitration catalyst, the content of TiO.sub.2 is 98-99.8% by weight, the content of SO.sub.3 is 0.2-1% by weight, and the content of P.sub.2O.sub.5 is 0.1-0.2% by weight. The hydrogenated TiO.sub.2 denitration catalyst has high denitration activity at 300-400° C. and N.sub.2 selectivity as high as 85% or more, and can be used in NH.sub.3—SCR denitration.

The disclosure discloses a catalyst capable of simultaneously removing COS and H.sub.2S in garbage gasification and a preparation method thereof, and belongs to the technical field of preparation of desulfurization catalysts. The method includes the following steps: pretreating an SBA-15 molecular sieve with a templating agent unremoved, which primarily includes the steps of removing the templating agent and introducing halogen atoms to modify the molecular sieve; then synthesizing an active component solution; and finally introducing active components into channels of the pretreated molecular sieve via surface tension by adopting an impregnation method, performing washing and drying, and performing calcining under an N.sub.2 atmosphere, so as to obtain the catalyst. An H.sub.2S and COS removal experiment is performed on the catalyst prepared according to the present disclosure under a simulated garbage gasification atmosphere, and a desulfurization experiment is performed as a control, so as to evaluate the desulfurization efficiency. The catalyst prepared according to the present disclosure can load the active components in fixed positions inside and outside the channels, and the components are easy to obtain, thereby having the advantages of low cost and good desulfurization effects.

Disclosed is a FER-type zeolite having at least silicon, aluminum, and oxygen as skeletal atoms, where a molar ratio between silicon atoms to aluminum atoms is 2-100:1. In addition, when .sup.29Si solid nuclear magnetic resonance spectroscopy is used to analyze the zeolite, a peak area in the chemical shift range of −90 ppm to −110 ppm accounts for 25% or more of a peak area in the chemical shift range of −90 ppm to −125 ppm. Also disclosed are a preparation method for and an application of the FER zeolite.

Provided is an apparatus for treating waste gas of the electronics industry, and the apparatus includes: a reaction chamber in which an inlet and an outlet are formed and an inner space for purifying waste gas is formed; a first partition plate extending from an inner wall of the reaction chamber facing the inlet in a direction toward the inlet, dividing the inner space into a pre-treatment zone for collecting dust in the waste gas and a remaining purification zone; a second partition plate extending vertically downward from a ceiling of the reaction chamber, dividing the purification zone into a thermal decomposition zone for heating and thermally decomposing waste gas and a post-treatment zone; and a heater installed at the ceiling of the reaction chamber so as to be located in the thermal decomposition zone to thermally decompose a perfluorinated compound by heating waste gas introduced into the thermal decomposition zone; and a dry scrubber unit including one or more catalysts to collect at least one of the dust, a fluorine compound, and nitrous oxide (N2O) in waste gas introduced into the post-treatment zone.

Fuel tank inerting systems are provided. The systems include a fuel tank, an air source arranged to supply air into a reactive flow path, a catalytic reactor having a plurality of sub-reactors along the flow path, and a heat exchanger. The sub-reactors are arranged relative to the heat exchanger such that the flow path passes through at least a portion of the heat exchanger between two sub-reactors along the flow path. At least one fuel injector is arranged relative to at least one sub-reactor. The fuel injector is configured to inject fuel into the flow path at at least one of upstream of and in the respective at least one sub-reactor to generate a fuel-air mixture. A fuel tank ullage supply line fluidly connects the flow path to the fuel tank to supply an inert gas to a ullage of the fuel tank.

Fuel tank inerting systems are provided. The systems include a fuel tank, an air source arranged to supply air into a reactive flow path, a catalytic reactor having a plurality of sub-reactors along the flow path, and a heat exchanger. The sub-reactors are arranged relative to the heat exchanger such that the flow path passes through at least a portion of the heat exchanger between two sub-reactors along the flow path. At least one fuel injector is arranged relative to at least one sub-reactor. The fuel injector is configured to inject fuel into the flow path at at least one of upstream of and in the respective at least one sub-reactor to generate a fuel-air mixture. A fuel tank ullage supply line fluidly connects the flow path to the fuel tank to supply an inert gas to a ullage of the fuel tank.