A modified solid polyalkylaluminoxane is provided, which is capable of providing α-olefin suppressing adhesion of any polymer produced as a by-product onto the reactor wall and the stirrer, and which is capable of providing a highly active olefin oligomerization reaction catalyst. An olefin oligomerization reaction catalyst containing the modified solid polyalkylaluminoxane is also provided. The modified solid polyalkylaluminoxane for olefin oligomerization reactions contains structural units represented by general formula (a) and structural units represented by general formula (b), whose median diameter is equal to or larger than 0.1 μm and equal to or smaller than 50 μm,

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in which R′ in the general formula (a) represents an alkyl group having 1 to 20 carbon atoms, and R″ in the general formula (b) represents a halogenated alkoxy group having 1 to 20 carbon atoms or a halogenated aryloxy group having 6 to 20 carbon atoms.

Described herein are corrole-based frameworks and methods for making the same. The corrole-based frameworks have unique structural and physical properties, which lends them to be versatile in a number of different applications and uses such as in gas storage/separation, proton conduction, biomedicine, sensing, and catalysis. In one aspect, the corrole-based frameworks are organic frameworks. In other aspects, the corrole-based frameworks are metal-organic frameworks.

This invention relates to molecular catalysts and chemical reactions utilizing the same, and particularly to catalysts and catalytic methods for reduction of molecular nitrogen. The molecular catalytic platform provided herein is capable of the facile reduction of molecular nitrogen under useful conditions such as room temperature or less and atmospheric pressure or less.

The present invention discloses a continuous calcination vessel which can be used to prepare calcined chemically-treated solid oxides from solid oxides and chemically-treated solid oxides. A process for the continuous preparation of calcined chemically-treated solid oxides is also provided. Calcined chemically-treated solid oxides disclosed herein can be used in catalyst compositions for the polymerization of olefins.

An ink composition, including a quantum dot; a metal catalyst; an aromatic halide compound; an ene compound including at least one C—H moiety and a carbon-carbon unsaturated bond; and optionally, a metal oxide particle, wherein the metal catalyst is a metal salt, a metal coordination complex, or a combination thereof, wherein the metal catalyst comprises a metal that is palladium, nickel, ruthenium, rhodium, iridium, iron, cobalt, chromium, copper, platinum, silver, gold, or a combination thereof.

An ink composition, including a quantum dot; a metal catalyst; an aromatic halide compound; an ene compound including at least one C—H moiety and a carbon-carbon unsaturated bond; and optionally, a metal oxide particle, wherein the metal catalyst is a metal salt, a metal coordination complex, or a combination thereof, wherein the metal catalyst comprises a metal that is palladium, nickel, ruthenium, rhodium, iridium, iron, cobalt, chromium, copper, platinum, silver, gold, or a combination thereof.

A composite, method of making the composite, and method of using the composite are disclosed. The composite comprises a macroporous scaffold comprising pores; and a polymer matrix positioned within the pores; wherein the polymer matrix comprises: a functional polymer particle; and a structural polymer. The method of using can comprise applications such as chromatography, catalysis, and sensing, among others.

A process for producing polyethylene polymers including contacting ethylene and at least one C.sub.3 to C.sub.8 alpha-olefin comonomer with a polymerization catalyst on a particulate support in a fluidized bed polymerization reactor under conditions effective to polymerize at least part of the ethylene and comonomer and produce the polyethylene polymers, wherein the support has a d.sub.10 particle size as measured by laser diffraction of at least 18 microns, is provided.

Silica-coated alumina activator-supports, and catalyst compositions containing these activator-supports, are disclosed. Methods also are provided for preparing silica-coated alumina activator-supports, for preparing catalyst compositions, and for using the catalyst compositions to polymerize olefins.

The present specification relates to a carrier-nanoparticle complex, a catalyst including the same, an electrochemical cell or a fuel cell including the catalyst, and a method for preparing the same.