Abstract:
A novel porous honeycomb structure highly functionalized as compared with the conventional example, manufacturing method thereof and an air cleaner using the structure are provided. The functionalized porous honeycomb structure is a silica gel form, and fine powder for adding the function is dispersed in the form. Further the method of manufacturing in accordance with the present invention includes the steps of (a) preparing silica sol by mixing ion exchange resin in sodium silicate aqueous solution; (b) removing said ion exchange resin and adjusting pH; (c) dispersing fine powder for adding a function to the silica sol; (d) gelating the silica sol to provide silica wet gel; and (e) freezing the silica wet gel.
Abstract:
[OBJECTS] To provide an adsorbent with improved adsorbing capacity, easiness to shaping and appearance, by ordinary extrusion, and to provide a method of and an apparatus for making the adsorbent. [MEANS FOR ACHIEVEMENT] Outlet of an extruder (2) fits on a mold (3) having plural pins (31) of the same cross section as fluid channels (11). A narrow interstice (32) intervenes between the adjacent pins fixed upright on a base plate (33). A detour (35) conducting a fluidic raw material mixture (13) is defined inside a mantle (34) and around the base plate. The mixture composed of a carbonaceous powder and an inorganic powder with or without a binder and water to knead them is forced into the interstices so as to form an uncured product (14). Vestiges of the pins (31) remain as fluid channels (11) each surrounded by peripheral walls (12), and the uncured product is dried and then possibly sintered to render porous and rigid the peripheral walls thus congregated to give a solid mass.
Abstract:
The present invention concerns a disposable article for absorbing a liquid, wherein the article has a substantially non-liquid permeable layer forming an outer packaging surface of the article, and an absorptive material, wherein the outer packaging surface surrounds at least one side of the absorptive material, and wherein said outer packaging surface further includes an opening, through which liquid can pass into the absorptive material. The invention also relates to a method of producing an article and the use of said article in for example the plumbing business, as a drip absorbent, as a residual liquid absorbent, and as a condensate absorbent.
Abstract:
An air/liquid exchanger comprising an open-cell foam 102 supporting a liquid sorbent. The exchanger may be used for removing trace gaseous components from the air.
Abstract:
An adsorbent material fabricated into a reinforcement-free, self-supported coherent thin sheet and configured for use as a parallel passage contactor element in adsorption/separation applications with gases and liquids is disclosed. The adsorbent sheet material is obtained by enmeshing fine adsorbent particulates in a polymer binder. Particulates include but are not limited to carbon particles, inorganic oxides particles, or ceramic particles, or synthetic polymer resin particles. The adsorbent sheet advantageously contains a large volume percentage of active adsorbent particles. The parallel passage contactor device fabricated from the adsorbent sheet material is characterized by minimal mass transfer resistance and better separation efficiency expressed as height equivalent to a theoretical plate, while it maintains most of the adsorptive properties of the starting particulates, and can be used in gas separation applications with short adsorption cycles, such as rapid pressure swing adsorption, rotary concentrators, rapid electric swing adsorption.
Abstract:
Methods have been developed to form catalysts having active metals disposed on a carbon nanotube coated porous substrate. Catalysts and reactions over nanotube-containing catalysts are also disclosed. Results are presented showing enhanced performance resulting from use of the inventive catalyst. Mesoporous oxide layers can be utilized to improve catalyst properties.
Abstract:
A particulate filter device comprises a particulate filter comprising a substrate having a redox active material disposed thereon, wherein the redox active material is a solid solution capable of transformation between a stable reduced form and a stable oxidized form, and is capable of generating an exotherm under re-oxidizing conditions; and a housing disposed around the substrate.
Abstract:
Adsorbents and methods for removing cations of heavy metals from a medium are provided. The adsorbents comprise a porous media in which at least one oxygen-containing compound of iron, copper, aluminum, zirconium, titanium and combinations thereof is incorporated. The oxygen-containing compound may be incorporated into the porous media by impregnation or dispersion of a suitable precursor of such a compound. The precursor may be further treated to yield the oxygen-containing compound. Such adsorbents are particularly useful for removing lead and/or other metal cations from the environment and may be used in treating drinking water sources.
Abstract:
An activated alumina formed body with a high bulk density and a large macro-pore volume is provided. The activated alumina formed body can be produced by a method comprising the steps of calcining a gibbsite-phase aluminum hydroxide having a median particle size of from about 10 μm to about 35 μm and a packed bulk density of from about 1.05 g/cm3 to about 1.3 g/cm3 to obtain an at least partially rehydratable alumina powder; forming the rehydratable alumina powder in the presence of water; maintaining the formed body in the presence of water to rehydrate the formed body; and calcining the rehydrated formed body to obtain an activated alumina formed body. The activated alumina formed body is usable as an adsorbent, a catalyst supporting precious metal or the like.
Abstract translation:提供了具有高堆积密度和大的大孔体积的活性氧化铝成形体。 活性氧化铝成形体可以通过以下方法制备,该方法包括以下步骤:煅烧中值粒径为约10〜35μm的三水铝矿相氢氧化铝,填充体积密度为约1.05g / cm 2 > 3至约1.3g / cm 3,以获得至少部分可再水化的氧化铝粉末; 在水的存在下形成可再水化的氧化铝粉末; 在水的存在下保持成形体以使成形体再水化; 并煅烧再水化的成形体以获得活性氧化铝成形体。 活性氧化铝成形体可用作吸附剂,负载贵金属的催化剂等。