A composite material is used for desulfurization. The composite material contains activated carbon, alkali metal oxides, silicon oxides, iron oxides, and rare earth element oxides. The weight ratio among the activated carbon, iron oxides and rare earth element oxides is 100:(0.5-5):(1-10). The composite material, used as a sulfur adsorbent, has a higher sulfur breakthrough capacity and desulfurization rate.

A molecular sieve complex contains an oxide of aluminum, an oxide of an alkaline earth metal and a rare earth-modified molecular sieve. The rare earth-modified molecular sieve is a molecular sieve doped by a rare earth element. The percentage of the pore volume occupied by pores of 3 nm or less to the total pore volume in the molecular sieve complex is greater than or equal to 63.5%. The content of the rare earth element and the contents of the oxide of aluminum, the oxide of the alkaline earth metal and the molecular sieve satisfy a certain relationship. The composite material contains a molecular sieve complex and an auxiliary agent loaded on the molecular sieve complex, and the composite material may be applied to flue gas adsorption and desulfurization.

Provided is a hydrogen isotope adsorbent with differential binding properties and including mesoporous silica doped with fluorine.

A system and process for the recovery of at least one anesthetic from a gas stream including at least two anesthetics. The recovery includes adsorption by exposing the gas stream to an adsorbent. The adsorbent is then regenerated by exposing the adsorbent to a purge gas under conditions which efficiently desorb the at least two anethetics from the adsorbent. The at least two anesthetics (and impurities or reaction products) are condensed from the purge gas and subjected to fractional distillation to provide a recovered anesthetic.

A multi-functional composition of matter that is useful for injection into a flue gas stream to rapidly and efficiently remove mercury from the flue gas streams, particularly at above average flue stream temperatures of about 340° F. or higher. The multi-functional composition of matter may include a fixed carbon content of at least about 20 wt. %, a mineral content of from about 20 wt. % to about 50 wt. %, a sum of micropore plus mesopore volume of at least about 0.20 cc/g, a micropore volume to mesopore volume ratio of at least about 0.7, and a tapped density of not greater than about 0.575 g/ml. These compositions may be further characterized by number of particles per gram of the composition of matter such that the composition may have at least about 0.8 billion particles per gram, or even as many as 1.5 billion particles per gram. These physical and chemical properties may enhance (1) the oxidation reaction kinetics for the oxidation of mercury species, (2) frequency of contact events, and (3) capture and sequestration of mercury, to achieve efficient mercury capture by the composition even in high temperature flue gas streams.

A functional material is provided and includes a porous carbon material derived from a plant-derived material as a raw material, wherein a bulk density of the porous carbon material is in a range of 0.2 grams/cm.sup.3 to 0.4 grams/cm.sup.3, and wherein a value of an ignition residue of the porous carbon material ranges from 0.1 mass % to 20 mass %.

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 ml/g and a mesopore volume greater than about 0.5 ml/g.

An adsorbent composition contains molecular sieves, hydrated alumina and alumina. The adsorbent composition is particularly suitable for removing polar compounds from low-carbon olefins.

Methods for producing porous graphic carbon microspheres having improved separation properties over conventional porous graphitic carbons. The methods include dispersing a monovinyl aromatic monomer, a polyvinyl aromatic monomer, and an initiator in a solvent, contacting porous silica microspheres with the monomer dispersion for a time sufficient for the monomers to coat the porous silica microspheres, polymerizing the monomers to form copolymer coated microspheres, sulfonating the copolymer, pyrolyzing the sulfonated copolymer, digesting the carbon microspheres to dissolve the silica leaving porous carbon microspheres, pyrolyzing the porous carbon microspheres, and graphitizing the porous carbon microspheres to form porous graphitic carbon microspheres. Further provided are improved porous graphitic carbon microspheres and chromatography columns including the improved porous graphitic carbon microspheres described herein.

A sorption media with a high capacity to remove heavy metals, lead, and mercury, in particular when synthesized from a titanium source that contains sulfur, such as black liquor or titanyl sulfate (TiOSO.sub.4). The use of sulfur provides a higher than expected capacity for Pb and/or Hg. A Group 1 and/or Group 2 metal-titanosilicate is employed, having a Ti to Si molar ratio of 0.5-2, a pore volume of at least less than or equal to 0.25 cc/g.