A system for capturing and sequestering carbon dioxide includes nanoparticles formed from alkali or alkali metal oxides or hydroxides, such as lithium oxide. Carbon-dioxide containing effluent gasses are exposed to the nanoparticles in fixed beds or fluidized beds, or in a co-flow configuration. The nanoparticle metal oxides are converted to metal carbonates. The nanoparticles can be recovered and the carbon dioxide release by exposing the nanoparticles to an oxygen containing atmosphere at high temperatures.

A system and process for the recovery of at least one halogenated hydrocarbon from a gas stream. The recovery includes adsorption by exposing the gas stream to an adsorbent with a lattice structure having pore diameters with an average pore opening of between about 5 and about 50 angstroms. The adsorbent is then regenerated by exposing the adsorbent to a purge gas under conditions which efficiently desorb the at least one adsorbed halogenated hydrocarbon from the adsorbent. The at least one halogenated hydrocarbon (and impurities or reaction products) can be condensed from the purge gas and subjected to fractional distillation to provide a recovered halogenated hydrocarbon.

An adsorbent composition for capturing pollutants includes a porous composition that includes a plurality of ferric oxyhydroxide particles and an additional component in the porous composition. The additional component includes one of copper chloride (CuCl.sub.2), zinc chloride (ZnCl.sub.2), polyvinylpolypyrrolidone, silicon carbide, silicon dioxide, activated carbon or other carbonaceous material, and a combination thereof.

The present disclosure relates to hydrocarbon emission control systems. More specifically, the present disclosure relates to substrates coated with hydrocarbon adsorptive coating compositions and evaporative emission control systems for controlling evaporative emissions of hydrocarbons from motor vehicle engines and fuel systems. The hydrocarbon adsorptive coating compositions include particulate carbon having a BET surface area of at least about 1300 m.sup.2/g, and at least one of (i) a butane affinity of greater than 60% at 5% butane; (ii) a butane affinity of greater than 35% at 0.5% butane; (iii) a micropore volume greater than about 0.2 mug and a mesopore volume greater than about 0.5 ml/g.

A method for making a titania-polymer nanocomposite by simultaneously forming TiO.sub.2 nanoparticles in situ from a TiO.sub.2 precursor in the presence of urea and interfacially polymerizing polyamide precursors thereby producing a titania-polymer nanocomposite. A titania-polymer nanocomposite made by this method. A method for removing a dye or metal from water comprising contacting contaminated water with the titania-polymer nanocomposite.

An aminated siliceous adsorbent, which is the reaction product of dried acidified rice husk ash having disordered mesopores and an amino silane, wherein amine functional groups are present on an external surface and within the mesopores of the dried acidified rice husk ash, and wherein the aminated siliceous adsorbent has a carbon content of 24 to 30 wt. %, based on a total weight of the aminated siliceous adsorbent. A method of making the aminated siliceous adsorbent and a method of capturing CO.sub.2 from a gas mixture with the aminated siliceous adsorbent.

The present invention relates to novel sulfur-doped carbonaceous porous materials. The present invention also relates to processes for the preparation of these materials and to the use of these materials in applications such as gas adsorption, mercury and gold capture, gas storage and as catalysts or catalyst supports.

A method for making a titania-polymer nanocomposite by simultaneously forming TiO.sub.2 nanoparticles in situ from a TiO.sub.2 precursor in the presence of urea and interfacially polymerizing polyamide precursors thereby producing a titania-polymer nanocomposite. A titania-polymer nanocomposite made by this method. A method for removing a dye or metal from water comprising contacting contaminated water with the titania-polymer nanocomposite.

Provided is an adsorbent for capturing carbon dioxide and a method for manufacturing same, and more particularly, to an adsorbent for capturing carbon dioxide, including a magnesium oxide/titanium dioxide composite having wide surface area, large pore volume and good CO.sub.2 adsorption performance, and a method for manufacturing same. According to the present invention, a novel MgO based composite metal oxide which may stably adsorb CO.sub.2 at a low temperature such as room temperature is provided. The adsorbent for capturing carbon dioxide, including a magnesium oxide/titanium dioxide composite has good thermal stability, and controls basic sites easily, and is used in various fields for capturing carbon dioxide. In addition, by controlling the molar ratio of the metal ions of the magnesium oxide/titanium dioxide composite and controlling morphology, an adsorbent for capturing carbon dioxide having large surface area and pore volume and strong basic sites may be provided.

A sorbent structure that includes a continuous body in the form of a flow-through substrate comprised of at least one cell defined by at least one porous wall. The continuous body comprises a sorbent material carbon substantially dispersed within the body. Further, the temperature of the sorbent structure can be controlled by conduction of an electrical current through the body.