A sorbent composition for pelletized carbon products having high strength and water resistance is disclosed. The invention also includes a method of producing sorbent compositions of pelletized carbon products having high adsorption capacities of phosphate and nitrates including the use of a metal oxide as a binder. The invention further includes a system for removing nutrients from a pollutant stream.

A composite membrane for hydrogen separation and purification, including: a modified and activated support, a Palladium (Pd) layer, and an interstice layer between the second surface-modifying layer and the Pd layer. The support includes a support substrate, a first surface-modifying layer on the support substrate, and a second surface-modifying layer on the first surface-modifying layer.

The present disclosure relates to a powder composition comprising first and second agglomerates of inorganic particles, to a polymer composition comprising a polymer and said powder composition, and to a composite article made from said polymer composition. The present disclosure further relates to a process for producing said powder composition and to a process for making said composite article, and to the use of said powder composition as thermal conduction means to control the temperature of electrical and electronic components or assemblies or batteries. The present disclosure further relates to a kit of parts for producing said powder composition.

The present invention relates to the field of solid materials for the adsorption of lithium. In particular, the present invention relates to a new method for the preparation of a crystallized and shaped solid material, preferably in extruded form, of formula LiX.sub.x.2Al(OH).sub.3,nH.sub.2O, wherein n is between 0.01 and 10, x is 1 when X is an anion selected from among chloride, hydroxide and nitrate anions, and x is 0.5 when X is an anion selected from among sulfate and carbonate anions, comprising a boehmite precipitation step a) under specific temperature and pH conditions, at least one basic mixing shaping step, wherein the method also comprises a final hydrothermal treatment step, all to increase the lithium adsorption capacity and the kinetics of adsorption of the materials obtained, compared with the materials of the prior art when it is used in a method for lithium extraction from saline solutions.

The present disclosure relates to an alumina having a surface area in the range of 330-400 m.sup.2/g, a pore volume in the range of 1.2-1.7 cc/g, and an average pore diameter in the range of 125-160 . The present disclosure also relates to alumina extrudates having a diameter in the range of 1 mm to 3 mm, a surface area in the range of 300-360 m.sup.2/g, a pore volume in the range of 0.8-1.3 cc/g and pore diameter in the range of 90-130 with a crushing strength in the range of 1-2.5 daN/mm. Further, the present disclosure relates to a process for the preparation of alumina and alumina extrudates. The alumina extrudates can be used as a support for catalyst preparation or as a catalyst or adsorbent in various processes. The process of the present disclosure enhances metal loading capacity, has better metal dispersion, and exhibit delay in deactivation of the catalyst due to mouth pore plugging.

A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m.sup.2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.

A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m.sup.2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.

An oil field chemical-carrying material comprising granulated particles is disclosed. The granulated particles comprise alumina. An oil field chemical is integrally incorporated into the granulated particle. The particles have been aged by heating the particles in a sealed or humid environment.

The invention relates to a method for producing an alumina based abrasive particle (1), comprising at least the following steps: forming a sol as a solution or dispersion of alumina particles, gelling the sol by adding gelling agents, forming shaped bodies from the gel using an additive procedure, drying and firing the shaped bodies while retaining the previously achieved geometry of the abrasive particles.

Hereby, it is provided that an optically binding binder is added to the sol and/or the gel, the gel is applied additively layer by layer and the binder is set using electromagnetic radiation so as to form the shaped bodies.

The produced abrasive particle may be formed, in particular, by six intersecting or overlapping triangular volume regions.

A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m.sup.2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.