In one aspect, the present invention provides a chromatographic stationary phase material for various different modes of chromatography represented by Formula 1: [X](W).sub.a(Q).sub.b(T).sub.c (Formula 1). X can be a high purity chromatographic core composition having a surface comprising a silica core material, metal oxide core material, an inorganic-organic hybrid material or a group of block copolymers thereof. W can be absent and/or can include hydrogen and/or can include a hydroxyl on the surface of X. Q can be a functional group that minimizes retention variation over time (drift) under chromatographic conditions utilizing low water concentrations. T can include one or more hydrophilic, polar, ionizable, and/or charged functional groups that chromatographically interact with the analyte. Additionally, b and c can be positive numbers, with the ratio 0.05?(b/c)?100, and a?0.

The present invention provides novel chromatographic materials, e.g., for chromatographic separations, processes for their preparation and separations devices containing the chromatographic materials. The preparation of the inorganic/organic hybrid materials of the invention wherein a surrounding material is condensed on a superficially porous hybrid core material will allow for families of different hybrid packing materials to be prepared from a single core hybrid material. Differences in hydrophobicity, ion-exchange capacity, chemical stability, surface charge or silanol activity of the surrounding material may be used for unique chromatographic separations of small molecules, carbohydrates, antibodies, whole proteins, peptides, and/or DNA.

This invention generally relates to a process for manufacturing a lithium selective adsorbent and, more particularly, to a process for manufacturing a lithium selective adsorbent using a recycled and augmented intercalation reaction liquor. An initial quantity of adsorbent precursor is intercalated with lithium using an intercalation reaction liquor to produce an intercalated layered aluminate adsorbent and a post-intercalation reaction liquor. The post-intercalation reaction liquor is decanted, and the intercalated layered aluminate adsorbent is neutralized to produce the lithium selective adsorbent. The decanted intercalation reaction liquor is reconstituted to a pre-intercalation reaction volume of the intercalation reaction liquor, which is recycled to intercalate a subsequent quantity of adsorbent precursor.

The present invention belongs to the field of aqueous environmental treatment and specifically relates to a preparation method and application of a cellulose/lignin/clay composite aerogel for the efficient adsorption of antibiotics. Cellulose/lignin/clay composite aerogels were prepared by sol-gel, cross-linking, and freeze-drying methods, and the preparation method and operation process were simple and easy to reuse with a large yield. The raw materials used in the present invention are the natural polymer materials, cellulose, lignin, and clay minerals, which are widely available and non-toxic, cellulose and lignin are biodegradable and have no risk of secondary pollution. Cellulose can be used as the matrix of aerogels owing to its unique environmental friendliness, biodegradability, and excellent structural skeleton structure. Cellulose can be used as the skeleton of aerogels, and lignin and clay minerals can be used as modifiers, which can significantly improve the mechanical properties of cellulose aerogels and the adsorption properties of antibiotics. The cellulose/lignin/clay composite aerogel of the present invention presents excellent adsorption ability for antibiotics.

The invention relates to a corrosion-resistant, reactive adsorbent which is made up of element iron on a carbon carrier plus sulfur and additional phosphorus as well as a method for producing this reactive adsorbent and use thereof for removal of reductively degradable pollutants in contaminated groundwater and wastewater.

The present invention provides novel chromatographic materials, e.g., for chromatographic separations, processes for its preparation and separations devices containing the chromatographic material; separations devices, chromatographic columns and kits comprising the same; and methods for the preparation thereof. The chromatographic materials of the invention are chromatographic materials comprising having a narrow particle size distribution.

Provided is a mercury adsorbent that can efficiently adsorb and remove mercury and/or a mercury compound contained in a liquid hydrocarbon and can suppress corrosive action even when used for a long time. The mercury adsorbent comprises an activated carbon including a mineral acid supported thereon, the activated carbon having a specific surface area of 1000 m.sup.2/g or larger and a volume of micropores of 80 cm.sup.3/g or larger, each of the micropores having a pore radius of 8 ? or smaller, and the mercury adsorbent has a moisture content of from 0.1 to 3 wt %.

A getter is provided. The getter consists essentially of from about 0% to 50% of titanium, from about 0% to 50% zirconium, and from about 5% to 50% of tantalum. A MEMS device is provided. The MEMS device includes a substrate and a getter over the substrate. The getter consists essentially of from about 0% to 50% of titanium, from about 0% to 50% zirconium, and from about 5% to 50% of tantalum. A method of forming a MEMS device is provided. The method includes the following operations: providing a substrate; and providing a getter over the substrate, wherein the getter consists essentially of from about 0% to 50% of titanium, from about 0% to 50% zirconium, and from about 5% to 50% of tantalum, and wherein all of the percentages are atomic percentages.

The present disclosure relates to a method of separating a compound of interest, particularly unsaturated compound(s) of interest, from a mixture. The compound is separated using a column having a chromatographic stationary phase material for various different modes of chromatography containing a first substituent and a second substituent. The first substituent minimizes compound retention variation over time under chromatographic conditions. The second substituent chromatographically and selectively retains the compound by incorporating one or more aromatic, polyaromatic, heterocyclic aromatic, or polyheterocyclic aromatic hydrocarbon groups, each group being optionally substituted with an aliphatic group.

In one aspect, the present invention provides a chromatographic stationary phase material for various different modes of chromatography represented by Formula 1: [X](W).sub.a(Q).sub.b(T).sub.c (Formula 1). X can be a high purity chromatographic core composition having a surface comprising a silica core material, metal oxide core material, an inorganic-organic hybrid material or a group of block copolymers thereof. W can be absent and/or can include hydrogen and/or can include a hydroxyl on the surface of X. Q can be a functional group that minimizes retention variation over time (drift) under chromatographic conditions utilizing low water concentrations. T can include one or more hydrophilic, polar, ionizable, and/or charged functional groups that chromatographically interact with the analyte. Additionally, b and c can be positive numbers, with the ratio 0.05?(b/c)?100, and a?0.