53results about How to "Increase the speed of oxidation reaction" patented technology

This invention provides a fuel battery unit cell, which can realize a size reduction and a cost reduction, a fuel battery unit cell array, a fuel battery module, and a fuel battery system. The fuel battery unit cell has a pin structure comprising a fuel electrode (11) formed of a p-type semiconductor, an oxygen electrode (13) formed of an n-type semiconductor, and an intermediate layer (12) interposed between the fuel electrode (11) and the oxygen electrode (13) and formed of an authentic semiconductor. The fuel electrode (11) and the oxygen electrode (13) are porous and permeable to a fluid. A metal-base catalyst layer is provided on the inner surface of pores in the porous part. The intermediate layer (12) is porous and permeable to a hydrogen ion produced in the fuel electrode (11) and is impermeable to electrons. A hydrogen-containing fuel is supplied on the surface of the fuel electrode (11), and an oxygen-containing oxidizing fluid is supplied on the surface of the oxygen electrode (13). Connecting terminals electrically connected respectively to the fuel electrode (11) and the oxygen electrode (13) are provided.

The invention discloses a preparation method of nano-cellulose, comprising the following steps of: firstly, swelling the raw material cellulose by aqueous alkali, soaking for a while, centrifugally separating out cellulose, and washing by deionized water till the filter liquor is neutral; dispersing the separated cellulose in water, adding sodium bromide, 2, 2, 6, 6-tetramethyl piperidine-1-oxide and sodium hypochlorite solution, carrying out an oxidation reaction under sonic oscillation, centrifugally separating after reaction, and carrying out freeze drying treatment on suspension liquid to obtain the nano-cellulose powder. Compared with the prior art, the preparation method is incompact in cellulose structure, can enlarge the unit cell distance, and can improve the reaction accessibility after the raw material cellulose is pretreated, so that the oxidation reaction efficiency can be improved, and the product yield can be obviously improved; the oxidation reaction conditions are mild, and are easy to control, and the product quality can not be influenced due to the fact that only a small quantity of sodium chloride and minute quantity of oxidizing agent are mixed in a reaction system after the reaction; and the sonic oscillation is adopted in the process of reaction, so that the oxidation reaction speed can be accelerated, and the reaction time can be obviously shortened.

The invention discloses a method for simultaneously removing sulfur, niter and mercury from smoke based on catalytic oxidation. The method is characterized by comprising the following steps of: (1) arranging a catalytic reactor in a dust-removed smoke duct, wherein a catalyst for promoting oxidizing reaction of NO and HgO is filled in the catalytic reactor; (2) allowing the dust-removed smoke to pass through the catalytic reactor, wherein under catalysis of the catalyst, the reaction speed of the NO, the HgO and O2 is increased and the NO and the HgO are oxidized into NO2 and Hg<2+>; and (3) introducing the smoke subjected to catalytic oxidation into an absorber with an absorption solution, wherein the absorption solution is used for absorbing NO2, Hg<2+> and SO2 from the smoke. The invention also discloses a system applicable to the method. According to the method and the system, the sulfur, the niter and the mercury are removed from the smoke; external oxidant is not required to be added; preparation, transportation and storage of strong oxidant are avoided; operating cost is reduced; and economy and safety of the system are improved.

The invention provides a microbiological fuel cell composite material anode and a manufacturing method thereof, and relates to a fuel cell composite material anode and a manufacturing method thereof, so that the problems of low electricity generation capacity and low removal rate of organic pollutant in water body or deposit can be solved. The anode is a compressing piece, the anode comprises a first wire mesh layer, a first non-metal sheet layer, a second wire mesh layer, a second non-metal sheet layer and a third wire mesh layer, the second non-metal sheet layer is positioned between the first wire mesh layer and the second wire mesh layer, the second non-metal sheet layer is arranged between the second wire mesh layer and the third wire mesh layer. The main steps for manufacturing the microbiological fuel cell composite material anode comprise: 1) irregularly etching the wire mesh, 2) performing a nitrocementation to liquid phase plasma, 3) compacting the material, 4) performing a carburization to liquid phase plasma, and 5) treating the composite material. The invention is used for power generation of the microbiological fuel cell and the organic pollutant in water body deposit removal.

The invention discloses a method for efficiently extracting vanadium from vanadium containing ore. The method comprises the steps of pretreatment, leaching, ion exchange, vanadium precipitation and post-treatment. According to the disclosed preparing method, the metal vanadium in the vanadium containing ore can be sufficiently extracted, and the extraction efficiency is high; a large amount of concentrated sulfuric acid does not need to be consumed in the preparing process, the high-temperature extraction process does not need to be conducted, and the production cost can be reduced; and meanwhile, the production technology can be simplified, and more excellent development prospects are achieved.