The present disclosure describes an evaporative emission control canister system that includes: one or more canisters comprising at least one vent-side particulate adsorbent volume comprising a particulate adsorbent having microscopic pores with a diameter of less than about 100 nm; macroscopic pores having a diameter of about 100-100,000 nm; and a ratio of a volume of the macroscopic pores to a volume of the microscopic pores that is greater than about 150%, and having a retentivity of about 1.0 g/dL or less. The system may further include a high butane working capacity adsorbent. The disclosure also describes a method for reducing emissions in an evaporative emission control system.

Calcium hydroxide-containing compositions can be manufactured by slaking quicklime, and subsequently drying and milling the slaked product. The resulting calcium hydroxide-containing composition can have a size, steepness, pore volume, and/or other features that render the compositions suitable for treatment of exhaust gases and/or removal of contaminants. In some embodiments, the calcium hydroxide-containing compositions can include a D.sub.10 from about 0.5 microns to about 4 microns, a D.sub.90 less than about 30 microns, and a ratio of D.sub.90 to D.sub.10 less than 20, wherein individual particles include a surface area greater than or equal to about 25 m.sup.2/g.

An energy efficient and durable thermal swing type carbon dioxide recovery and concentration device can be made smaller and use low-temperature heat waste of 100 C. or less. A honeycomb rotor carries adsorption particles having a sorption capacity for carbon dioxide. The rotor is rotated in a sealed casing divided into at least an sorption zone and a desorption zone and is brought into contact with material gas that contains carbon dioxide in a state wherein the honeycombs in the sorption zone are moist so as to adsorb the carbon dioxide while carrying out evaporative cooling of water. Then, the honeycombs that have adsorbed the carbon dioxide are moved to the desorption zone and brought into contact with low pressure vapor so as to desorb high concentration carbon dioxide. Thus, it is possible to continuously recover carbon dioxide at a high recovery rate and high concentration.

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.

The invention relates to a superior core-in-shell adsorbent comprising adsorbent, and an inert core, wherein said core possesses a porosity less than 10%, and has a volumetric thermal capacity greater than 1 J/K*cc. The adsorbents of the invention possess good physical strength, and allow a longer cycle time, thereby reducing the blowdown (vent) losses compared to known adsorbents.

The invention relates to an adsorber design for a vacuum/pressure swing adsorption (VSA, VPSA, PSA) process designed to obtain oxygen product from air utilizing the adsorbents of the invention.

Provided are sorbents and associated methods and systems for removing mercury from process gases or fluid streams. The sorbents may include activated carbon and pyrite. The sorbents may optionally include one or more additives, such as a halide salt.

A porous carbon material composite formed of a porous carbon material and a functional material and equipped with high functionality. The porous carbon material composite is formed of (A) a porous carbon material obtainable from a plant-derived material having a silicon (Si) content of 5 wt % or higher as a raw material; and (B) a functional material adhered on the porous carbon material, and has a specific surface area of 10 m.sup.2/g or greater as determined by the nitrogen BET method and a pore volume of 0.1 cm.sup.3/g or greater as determined by the BJH method and MP method.

The present invention concerns a method of decarbonating a gas stream containing from 15% to 60% carbon dioxide, by passage of the said gas stream over a zeolitic agglomerate comprising at least one binder and at at least one zeolite, and having a mesoporous volume of between 0.02 cm.sup.3.Math.g.sup.1 and 0.15 cm.sup.3.Math.g.sup.1 and a mesoporous volume fraction of between 0.1 and 0.5, preferably between 0.15 and 0.45.

The present invention concerns the use, for gas separation, of at least one zeolite adsorbent material comprising at least one FAU zeolite, said adsorbent having an external surface area greater than 20 m.sup.2.Math.g.sup.1, a non-zeolite phase (PNZ) content such that 0<PNZ30%, and an Si/Al atomic ratio of between 1 and 2.5. The invention also concerns a zeolite adsorbent material having an Si/Al ratio such that 1Si/Al<2.5, a mesoporous volume of between 0.08 cm.sup.3.Math.g.sup.1 and 0.25 cm.sup.3.Math.g.sup.1, a (VmicroVmeso)/Vmicro ratio of between 0.5 and 1.0, non-inclusive, and a non-zeolite phase (PNZ) content such that 0<PNZ30%.

The present invention concerns the use, for gas separation and/or gas drying, of at least one zeolite adsorbent material comprising at least one type A zeolite, said adsorbent having an external surface area greater than 20 m.sup.2.Math.g.sup.1, a non-zeolite phase (PNZ) content such that 0<PNZ30%, and an Si/Al atomic ratio of between 1.0 and 2.0. The invention also concerns a zeolite adsorbent material having an Si/Al ratio of between 1.0 and 2.0, a mesoporous volume of between 0.07 cm.sup.3.Math.g.sup.1 and 0.18 cm.sup.3.Math.g.sup.1, a (VmicroVmeso)/Vmicro ratio of between 3 and 1.0, non-inclusive, and a non-zeolite phase (PNZ) content such that 0<PNZ30%.