Abstract: A trace amount of a polytetrafluoroethylene resin is incorporated with an abrasive pigment prior to or during the preparation of an aqueous pigment slurry or is applied to dry pigment to reduce the abrasivity of the pigment. The treated pigment can be employed in the manufacture of filled and coated paper.

Abstract: Separation of impurities from kaolin clay is accomplished by conditioning a dispersed aqueous pulp of the clay with an anionic flotation collector, followed by centrifugation or hydrocloning to cause the impurities to settle from a dispersed pulp of the clay without an intermediate froth flotation step or a flotation waste froth is centrifuged or hydrocloned to recover valuable kaolin contained in the froth.

Abstract: Particles of an interconnected three-dimensional network of bar-like topaz crystals are used as a reactant (with added silicon dioxide, or a mixture with added silicon dioxide and hydrated aluminum fluoride or added silicon dioxide, hydrated aluminum fluoride and alumina) to form mullite whisker honeycomb articles suitable as catalyst supports.

Abstract: A crystalline-titanium-aluminum-silicate molecular sieve is disclosed having both di-charged octahedrally coordinated titanium and mono-charged tetrahedrally coordinated aluminum in its framework.

Abstract: A composite fluid catalytic cracking catalyst comprising a non-zeolitic component of at least 45% Al.sub.2 O.sub.3 and containing .ltoreq.30% Y zeolite with unit cell size .ltoreq.24.29 .ANG., the matrix (non-zeolitic component) of said catalyst having a B.E.T. surface area .gtoreq.50 m.sup.2 /g and a catalyst Lewis/Bronsted acid site ratio of .gtoreq.1.5 wherein the total number of Bronsted acid sites is .ltoreq.30 micromoles/g of catalyst. The catalyst is used to increase the isobutylene and isoamylenes content of cracked products obtained in a fluid catalytic cracking unit.

Abstract: The present invention provides a simple inexpensive means to decrease the abrasivity of abrasive pigments such as calcined kaolin and titania. In accordance with this invention, a trace of a nonionic surfactant of the general formula ##STR1## is incorporated with abrasive pigment prior to or during the preparation of an aqueous pigment slurry or to dry pigment.

Abstract: A novel shell-coated FCC catalyst is disclosed wherein the shell is a mixture of at least one refractory metal oxide or silicate or precursor thereof (preferably clay) having a particle size of 0.3 to 5 microns and an inorganic refractory binder (preferably silica) having a particle size of less than 0.01 microns and the core is a zeolite-containing microsphere.

Abstract: A novel ion-exchange agent, an aluminum-enriched analogue to the zeolite chabazite, hereinafter "Al-Chab" is disclosed. The Al-Chab is used in processes for recovering precious metals from aqueous solutions or for removing toxic heavy metals from contaminated aqueous streams.

Abstract: Crystalline molecular sieves having large pores are disclosed having at least one octahedrally coordinated site comprising titanium and at least tetrahedrally coordinated silicon in the framework.Conversion of organic compounds and removal of ions from solutions are also disclosed.

Abstract: A correlation is established between aflatoxin B1 binding on raw montmorillonite clays and the ratio of their surface acidities divided by their porosities for surface acid sites whose pKa values fall in the range 5.0-6.8 (i.e. weakly acidic) and porosities for pores whose diameters fall in the region 50-600 A. This information provides a method for preselecting clay additives for animal feeds which have enhanced toxin binding capacity.

Abstract: A dry solid animal feed composition in which biodegradable feed is contaminated with a mycotoxin and is admixed with a mycotoxin inactivating agent comprising particles of a phyllosilicate mineral capable of inactivating mycotoxins, said particles being coated with a sequestering agent in an amount sufficient to enhance the mycotoxin inactivating capacity of said phyllosilicate.

Abstract: Novel hydrous kaolin pigments comprising a major weight percent of a conventional hydrous kaolin pigment and a minor amount of a specific form of added discrete iron oxide, specifically magnetite, uniformly physically admixed therewith. Pigments of the invention have brightness values of about 78% to 85% and "b" values in the range of -1 to +4.

Abstract: Novel titania-calcined kaolin composite pigments wherein structuring and adhesion of titania and calcined kaolin particles is achieved by use of a cationic polyelectrolyte. Methods for compositing titania and calcined kaolin pigments which feature the presence of at least one polyanionic dispersant (such as sodium polyacrylate, sodium silicate, sodium condensed phosphate or mixtures thereof) in the pigment slurry into which cationic polyelectrolyte is introduced and the use of strongly alkaline pH (e.g., above 9).

Abstract: A process for reacting metallic iron with sulfur dioxide (SO.sub.2) gas in the presence of water and bleachable matter, especially iron-contaminated kaolin clay, whereby the kaolin or the like is bleached in situ.

Abstract: A sulfur-resistant CO, hydrocarbon and SO.sub.x oxidation catalyst is provided comprising silica particles which have been coated with titania or zirconia or precursors thereof and which have deposited thereon a precious metal such as platinum. The coated silica catalyst can be included in a washcoat for application to a ceramic honeycomb carrier.

Abstract: An improved continuous cyclic process for removing oxides of sulfur from a waste gas with a regenerable particulate adsorbent in which hot adsorbent particles pick up SOx in a first fluid transport riser, followed by separation of clean gas from sulfur-contained particles which are then recycled to a desorber in which they are contacted at elevated temperature with a mixture of reducing gas and water vapor for release of sulfur as hydrogen sulfide. The adsorbent particles are then recycled in the process. Means are provided for removing particulates in the waste gas.

Abstract: Disclosed is a process for removing accumulated metals, particularly vanadium and nickel, from particulate aluminosilicate materials and aluminosilicate materials that are obtained by the process. The process may advantageously be used to remove accumulated metals from spent aluminosilicate contact materials used in selective vaporization processes of the type described in U.S. Pat. No. 4,263,128. The process of this invention yields materials suitable for effective recycling to a selective vaporization unit or for ecologically-acceptable disposal, as well as, optionally, recovery of metals in saleable form.

Abstract: A bulked kaolin pigment is prepared by mixing a small but effective amount of a water-soluble cationic material such as a cationic polyelectrolyte flocculant with a kaolin clay pigment in the presence of water. The resultant bulked clay product can be dispersed to form high solids clay-water slurries useful in making aqueous coating colors suitable for manufacturing lightweight coated publication papers or the pigment can be used as a filler for paper webs. Slurries having stable viscosity during storage and at elevated temperature are prepared by using as the dispersant an anionic sulfonated disperant such as a lignosulfonate or a naphthalene formaldehyde sulfonate complex.

Abstract: New crystalline titanium molecular sieve zeolite compositions having a pore size of about 8 Angstrom Units are disclosed together with methods for preparing the same and organic compound conversions.

Abstract: An improved hydrocarbon conversion process is disclosed of the type employing circulating solids between a reactor (contactor) and regenerator (combustor). The entire process is in the dilute phase and is characterized by all the catalyst passing through the cyclones and never returning to a dense bed in either the reactor or regenerator.