Abstract: A process for removing pollutants from aqueous streams is disclosed. The process involves contacting the stream with a shaped ion exchange composite to remove ammonium and phosphate ions. The composite is a mixture of an anion exchange composition such as zirconia and a microporous cation exchange composition formed into a shaped article and optionally containing a binder such as hydrous zirconium oxide. The microporous cation exchangers are represented by the empirical formula.

Abstract: An apparatus and process for forming an array of powder samples arranged in predefined locations where all samples have a flat surface in a common plane has been developed. A monolithic block having a main support section having at least N perforations from a first surface of the main support through a second surface of the main support in predefined locations, where N is the number of samples in the array is provided. The monolithic block also has a flat support section covering the perforations of the main support section. All N samples are loaded simultaneously with sample X in perforation X of the main support where X is an integer from 1 to N. A flat surface of each sample where the flat surfaces are a common plane is formed by forcing the samples within the perforations against the flat support.

Abstract: A material treatment assembly comprises a first manifold having an inlet channel a second manifold having an outlet channel, a plurality of chambers in fluid communication with the first and second manifolds so that a fluid flows from the inlet channel through a material in each chamber and into the outlet channel, wherein the material maintains a position with respect to the manifolds, and at least one seal for each of the chambers adapted to permit repeated placement of material. A method for treating material comprises the steps of providing a plurality of chambers, loading material into the chambers, providing an inlet manifold having an inlet channel and an outlet manifold having an effluent channel, sealing the chambers into fluid communication with the manifolds and flowing a fluid from the inlet manifold, though the material and into the effluent manifold.

Abstract: A process of forming an array of powder samples arranged in predefined locations where all samples have a flat surface in a common plane has been developed. A main support having at least N perforations from a first surface of the main support through a second surface of the main support in predefined locations, where N is the number of samples in the array is provided. The main support is equipped with a flat support temporarily attached to its first surface. All N samples are loaded simultaneously with sample X in perforation X of the main support where X is an integer from 1 to N. A flat surface of each sample where the flat surfaces are a common plane is formed by forcing the samples within the perforations against the flat support. The samples are retained in position within the perforations against the flat support, and are made ready for analysis by exposing the flat surfaces of the samples by removing the flat support.

Abstract: A process and a composite for removing toxic cations and anions from blood or dialysate is disclosed. The process involves contacting blood or dialysate with a shaped ion exchange composite to remove ammonium and phosphate ions. The composite is a mixture of an anion exchange composition such as zirconia and a microporous cation exchange composition formed into a shaped article and optionally containing a binder such as hydrous zirconium oxide. The microporous cation exchangers are represented by the following empirical formula.

Abstract: An apparatus and process for forming an array of powder samples arranged in predefined locations where all samples have a flat surface in a common plane has been developed. A monolithic block having a main support section having at least N perforations from a first surface of the main support through a second surface of the main support in predefined locations, where N is the number of samples in the array is provided. The monolithic block also has a flat support section covering the perforations of the main support section. All N samples are loaded simultaneously with sample X in perforation X of the main support where X is an integer from 1 to N. A flat surface of each sample where the flat surfaces are a common plane is formed by forcing the samples within the perforations against the flat support.

Abstract: A process for removing toxins from fluids, such as bodily fluids or a dialysate solution, is disclosed. The process involves contacting the fluid with a microporous ion exchanger to remove toxins in the fluid.

Abstract: A process for removing toxins from blood is disclosed. The process involves contacting the blood with a microporous ion exchanger to remove toxins in the blood. Alternatively, the blood can be contacted with a dialysis solution which is then contacted with the ion exchanger. The microporous ion exchangers are represented by the following empirical formulae:A.sub.p M.sub.x Zr.sub.1-x Si.sub.n Ge.sub.y O.sub.m (I)andA.sub.p M.sub.x Ti.sub.1-x Si.sub.n Ge.sub.y O.sub.

Abstract: A new family of crystalline and microporous compositions having indium and silicon as essential framework elements have been synthesized. These compositions are characterized by unique x-ray diffraction patterns and an empirical formula of:A.sub.p (In.sub.1-n M.sub.n).sub.y Si.sub.1-z Ge.sub.z O.sub.xwhere A is a cation such as sodium or potassium and M is a metal having a valence of +3, +4 or +5 such as iron (+3), titanium (+4) and niobium (+5).

Abstract: A new family of crystalline molecular sieves have been synthesized. These compositions have a microporous structure of ZrO.sub.3 octahedral units, and at least one of SiO.sub.2 tetrahedral units and GeO.sub.2 tetrahedral units. Optionally, the molecular sieves contain M metals such as titanium, niobium, or tin. These novel molecular sieves are prepared hydrothermally from a reaction mixture composed of reactive sources of the components. Additionally, these molecular sieves are useful for the selective adsorption of ammonium ions.

Abstract: A new family of crystalline molecular sieves have been synthesized. These compositions have a microporous structure of at least ZrO.sub.3 octahedral units and SiO.sub.2 tetrahedral units. Optionally, the molecular sieves contain M metals such as titanium or tin. These novel molecular sieves are prepared hydrothermally from a reaction mixture composed of reactive sources of the components. Additionally, these molecular sieves are useful for the selective adsorption of ammonium ions.