83results about How to "Highly active and" patented technology

Highly active, recoverable and recyclable transition metal-based metathesis catalysts and their organometallic complexes including dendrimeric complexes are disclosed, including a Ru complex bearing a 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene and styrenyl ether ligand. The heterocyclic ligand significantly enhances the catalytic activity, and the styrenyl ether allows for the easy recovery of the Ru complex. Derivatized catalysts capable of being immobilized on substrate surfaces are also disclosed. The present catalysts can be used to catalyze ring-closing metathesis (RCM), ring-opening (ROM) and cross metatheses (CM) reactions, and promote the efficient formation of various trisubstituted olefins at ambient temperature in high yield.

A catalyst for the polymerization of 1-olefins is disclosed, which comprises (1) a compound of Formula B wherein M is Fe[II], Fe[III], Co[I], Co[II], Co[III], Mn[I], Mn[II], Mn[III], Mn[IV], Ru[II], Ru[III] or Ru[IV]; X represents an atom or group covalently or ionically bonded to the transition metal M; T is the oxidation state of the transition metal M and b is the valency of the atom or group X; R¹, R², R³, R⁴, R⁵, R⁶ and R⁷ are independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl; and when any two or more of R¹–R⁷ are hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl, said two or more can be linked to form one or more cyclic substituents; and (2) a further catalyst. Copolymers made using the catalyst having specific physical properties are also disclosed

The invention relates to method of reducing viscosity of high active liquid concentrate cleanser by adding perfumes, individual perfume components, or mixtures of components.

A synergistic insecticidal composition is formed containing a Chloronicotynyle compound and a Pyrethroids compound. The Chloronicotynyle compound is provided in an amount preferably ranging from 0.1 to 5.0% by weight of the synergistic insecticidal composition. The Pyrethroids compound is provided in an amount preferably ranging from 1 to 60% by weight of the synergistic insecticidal composition. The synergistic insecticidal composition also preferably includes 35 to 98.90% by weight of conventional agriculturally acceptable carrier(s) and/or excipients.

The present invention provides a heterogeneous catalyst which is highly active, excellent in selectivity and free from elution of its catalyst-components during reaction and which has long lifetime. That is, a phosphate of a metal selected from the group consisting of aluminum, gallium and iron is used as the catalyst for transesterification of the present invention.

The invention provides active, affordable, durable, and sulfur-tolerant catalysts and related precursors and processes useful in hydrogen production. The catalysts have a wide applicability. For example, in one embodiment, the invention provides sulfur-tolerant catalysts which, when used in a catalytic fuel processor, will facilitate sufficient hydrogen generation within 30 seconds or so of automobile start-up to generate around 50 kW of fuel cell power. Catalysts of the instant invention are made by reducing a catalyst precursor comprising a support phase impregnated with one or more elemental transition metals, wherein: (a) the support phase is formed by dispersion of a monolayer on the surface of a high surface area alumina support; and (b) the monolayer comprises XOnYO2, where (1) XOn is a redox active metal oxide and n is either 1.5, 2, or 2.5 depending on the oxidation number of X, and (2) YO2 is a redox inactive metal oxide. Ni-V2O5-ZrO2/Al2O3 catalysts of the instant invention are preferred.

A promoted calcium-alumina supported reforming catalyst that is particularly useful for reforming reactions where low H₂/CO ratio synthesis gas, such as less than 2.3 is generated directly is disclosed. The catalyst comprises from about 25 wt % to about 98 wt % alumina, from about 0.5 wt % to about 35 wt % calcium oxide, from about 0.01 wt % to about 35 wt % of a promoter, and from about 0.05 wt % to about 30 wt % of an active metal. The promoter is selected from the group consisting of titanium, zirconium, yttrium, niobium, elements of the lanthanum-series, such as, without limitation, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, ytterbium, and combinations thereof. The active metal is selected from the group consisting of nickel, cobalt, rhodium, ruthenium, palladium, platinum, iridium and combinations thereof as active metal, wherein the calcium oxide is combined with the alumina to form aluminum-rich calcium aluminates.

Disclosed are catalysts capable of catalyzing the dry reforming of methane. The catalysts have a core-shell structure with the shell surrounding the core. The shell has a redox-metal oxide phase that includes a metal dopant incorporated into the lattice framework of the redox-metal oxide phase. An active metal(s) is deposited on the surface of the shell.

The invention relates to aqueous, high active, self-preserving composition of mild surfactants which are used to create transparent liquid formulations with pH similar to skin's pH. More specifically, the composition comprise of sodium/potassium acyl isethionate of Formula I and mono potassium acyl glutamate of Formula II with solids content of at least 45% w/w, for personal care formulation that are ultra-mild, with skin pH and transparent.

The present invention refers to a microporous crystalline material of zeolitic nature (ITQ-22) which, in the calcined state, has the empirical formula wherein M is H+ or at least one inorganic cation of charge +n; X is at least one chemical element of oxidation state +3, preferably selected from the group consisting of Al, Ga, B, Fe and Cr; Y is at least one chemical element with oxidation state +4 other than Si and Ge, preferably selected from the group consisting of Ti, Sn and V; x has a value less than 0.2, preferably less than 0.1 and can take the value zero, y has a value less than 0.1, preferably less than 0.05 and can take the value zero, z has a value less than 0.8, preferably between 0.005 and 0.5 and can take the value zero, with a characteristic X-ray diffraction pattern, to the method of preparation and to the use of the material in separation and transformation processes of organic compounds.

The present invention relates to an anti-dandruff composition comprising 1-acetoxychavicol acetate (I). Furthermore, the present invention relates to a method for preparing said anti-dandruff composition and the use of said anti-dandruff composition for treating or preventing Malassezia induced dandruff formation. Moreover, the present invention relates to a method for preparing an Alpinia galanga extract and an extract obtainable or obtained by said method as well as the use of this extract for treating Malassezia induced dandruff formation comprising applying an anti-dandruff composition comprising said extract.

Methods for controlling series or series-parallel reactions are described. Novel microchannel apparatus having mesoporous structures adjacent to bulk flow paths are described. Methods of synthesizing formaldehyde from methanol are also described.

A synergistic insecticidal composition is prepared by combining a Chloronicotynyle compound and an Organophosphorus (OP) compound. The preferred synergistically effective amount of the Chloronicotynyle compounds is an amount preferably ranging from 0.1 to 5% by weight of the composition. The preferred synergistically effective amount of the Organophosphorus (OP) compounds is an amount preferably ranging from 30 to 75% by weight of the composition. The composition also preferably includes 69.9 to 20% by weight of conventional agriculturally acceptable carrier(s) and/or excipient.

Process for the preparation of 2,3,5-trimethyl-p-benzoquinone by oxidizing 2,3,5-trimethylphenol or 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas mixture in the presence of a catalyst system which can be a copper halide and a transition metal halide; for example iron, chromium, manganese, cobalt, nickel, zinc or a rare earth halide, in a two-phase reaction medium, at elevated temperature.

The invention provides a redox flow battery comprising a microporous or nanoporous size-exclusion membrane, wherein one cell of the battery contains a redox-active polymer dissolved in the non-aqueous solvent or a redox-active colloidal particle dispersed in the non-aqueous solvent. The redox flow battery provides enhanced ionic conductivity across the electrolyte separator and reduced redox-active species crossover, thereby improving the performance and enabling widespread utilization. Redox active poly(vinylbenzyl ethylviologen) (RAPs) and redox active colloidal particles (RACs) were prepared and were found to be highly effective redox species. Controlled potential bulk electrolysis indicates that 94-99% of the nominal charge on different RAPs is accessible and the electrolysis products are stable upon cycling. The high concentration attainable (>2.0 M) for RAPs in common non-aqueous battery solvents, their electrochemical and chemical reversibility, and their hindered transport across porous separators make them attractive materials for non-aqueous redox flow batteries based on size-selectivity.

A catalytically operating burner with a catalyzer structure (4), useful in particular for a gas turbine system, has a heat-resistant carrier material (10) that forms the walls of several adjoining channels (13). The channels (13) pervade the catalyzer structure (4) in longitudinal direction and permit that a gaseous reaction mixture flows through the catalyzer structure (4). The walls are coated at least in part with a catalyst. In order to improve the catalytic conversion within the catalyzer structure (4), communicating openings (14) are constructed in the walls between an inlet end and an outlet end of the catalyzer structure (4). Adjoining channels (13) are able to communicate with each other through the communicating openings (14).

The invention discloses a Cu7S4@MoS2 heterogeneous nanometer framework material and application thereof in producing hydrogen by catalytically electrolysing water.By means of a method for conducting thermal decomposition on a precursor, Cu7S4 serves as a supporting framework, and a tiny annular Cu7S4@MoS2 heterogeneous nanometer framework structure which is extremely high in activity and stability is obtained through MoS2 etching, wherein the surface of the Cu7S4@MoS2 heterogeneous nanometer framework structure is rich in active edge loca; after the surface ligands of the Cu7S4@MoS2 heterogeneous nanometer framework structure are removed, the Cu7S4@MoS2 heterogeneous nanometer framework structure is mixed with C powder, and the mixture is coated on electrodes to be applied to the process of catalytically electrolysing the water to produce hydrogen.Serving as a non-noble metal catalyst, due to the fact that the Cu7S4@MoS2 heterogeneous nanometer framework material has good crystallinity and is rich in MoS2 active edge loca, deposition potential of hydrogen in water can be reduced, the Cu7S4@MoS2 heterogeneous nanometer framework material can replace platinum to serve as an effective electro-catalysis material for hydrogen evolution, when electric current density reaches 10 mA/cm<2> and 200 mA/cm<2>, the overpotentials are only 133 mV and 206 mV respectively, and the highest activity and stability are shown in reported MoS2 nanometer catalysts.Due to the fact that a solvothermal method can be subjected to reasonable extension, by means of the Cu7S4@MoS2 heterogeneous nanometer framework material and the application thereof in producing hydrogen by catalytically electrolysing the water, a new way is paved for massively developing other non-noble sulfide catalysts.