A method for producing a lithium-containing oxide comprising one or more metal elements, which can be used as an active material for an electrode, for example a positive electrode for a lithium battery, the method comprising the following successive steps: a) a step of bringing at least one coordination polymer into contact with a lithium source, the coordination polymer comprising the other metal element(s) interconnected by organic ligands; b) a step of calcining the mixture resulting from step a).

The present disclosure discloses an immobilized metalloporphyrin catalyst and its utilization in maleic acid preparation, belonging to the technical field of metalloporphyrin catalytic application. The immobilized metalloporphyrin catalyst is used for catalyzing furfural to prepare maleic acid and is good in catalytic effect, mild in reaction conditions and capable of greatly reducing the energy consumption required in the prior art. The catalyst disclosed by the present disclosure can provide a good microenvironment for a reaction, so that the yield and selectivity of maleic acid are increased; and according to a method disclosed by the present disclosure, the conversion ratio of furfural is 20.4%-95.6%, the yield of maleic acid is 10%-56.1%, and the selectivity is 43.6%-76.1%. Meanwhile, the catalyst is easy to separate and environmentally friendly and may be recycled for many times.

The present invention relates to the preparation of novel nickel complexes containing iminopyrrolyl-type ligands, having the general molecular structure (I), and to their use as active catalysts in the polymerisation reaction of ethylene to hyperbranched polyethylene. The structure of the ligand precursor is such that it allows the occurrence of a cyclometallation reaction by the activation of a C—H bond, in the coordination reaction to the metal centre, generating a C,N,N′-tridentate complex.

Platinum complexes having benzyl-based diphosphine ligands for the catalysis of the alkoxycarbonylation of ethylenically unsaturated compounds.

A method of synthesizing a doped carbonaceous material includes mixing a carbon precursor material with at least one dopant to form a homogeneous/heterogeneous mixture; and subjecting the mixture to pyrolysis in an inert atmosphere to obtain the doped carbonaceous material. A method of purifying water includes providing an amount of the doped carbonaceous material in the water as a photocatalyst; and illuminating the water containing the doped carbonaceous material with visible light such that under visible light illumination, the doped carbonaceous material generates excitons (electron-hole pairs) and has high electron affinity, which react with oxygen and water adsorbed on its surface forming reactive oxygen species (ROS), such as hydroxyl radicals and superoxide radicals, singlet oxygen, hydrogen peroxide, that, in turn, decompose pollutants and micropollutants.

Disclosed are N-heterocyclic carbene (NHC) and 4-pyridinol-derived pincer ligands and metal complexes containing these ligands. These compounds can be used to photocatalyticaly reduce CO.sub.2 to CO.

A boron-nitrogen ligand with a chiral 1,2-ethylenediamine backbone, a preparing method and used thereof are provided. The structural formula of the boron-nitrogen ligand is as shown in formula (I):

##STR00001## wherein R.sup.1, R.sup.2 and R.sup.3 are respectively at least independently selected from substituted or unsubstituted C.sub.3-C.sub.10 cycloalkyl, C.sub.1-C.sub.10 alkyl or aryl; R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.11 and R.sup.12 are respectively at least independently selected from hydrogen, halogen, substituted or unsubstituted C.sub.1-C.sub.10 alkyl, C.sub.1-C.sub.4 alkoxy, C.sub.3-C.sub.30 cycloalkyl or aryl; Ar.sup.1 and Ar.sup.2 are respectively at least independently selected from substituted or unsubstituted C.sub.6-C.sub.30 aryl. The preparation method of the present application is simple, and can be used for preparing a racemic or chiral boron-nitrogen ligand, which can be used as a catalyst for an asymmetric catalytic reaction and has economic practicability and industrial application prospects.

An object of the present invention is to provide a novel method for producing a fluorine-containing methylene compound. The above object can be achieved by a method for producing a compound represented by formula (1):

##STR00001##

wherein R.sup.1 represents an organic group, R.sup.A represents hydrogen or fluorine, R.sup.4a represents hydrogen or an organic group, R.sup.4b represents hydrogen or an organic group, R.sup.5a represents hydrogen or an organic group, R.sup.5b represents hydrogen or an organic group, and R.sup.2 represents hydrogen or an organic group; R.sup.2 is optionally connected to R.sup.4a to form a ring; the method comprising step A of reacting a compound represented by formula (2):

##STR00002##

wherein X.sup.1 represents a leaving group, and other symbols are as defined above, with a compound represented by formula (3):

##STR00003##

wherein X.sup.2 represents a leaving group, and other symbols are as defined above, in the presence of a reducing agent as desired, under light irradiation.

The present invention provides an improved photochemical rector assembly device, particularly a light emitting diode (LED) based small photochemical reactor and methods for performing the photochemical transformations using the instantly presented device. Accordingly, the present invention relates to an improved photochemical transformation reaction by exposing the reaction mixture to a photochemical rector device as shown in fig. A-G, comprising of (i) light emitting diode (LED) panel (1), (ii) Aluminium based heat sink, and (iii) cooling fan.

Provided is a carbon dioxide reduction composite catalyst, comprising an organic-inorganic porous body, and a molecular reduction catalyst combined with the organic-inorganic porous body, wherein the organic-inorganic porous body includes metal oxide clusters, and a light-condensing organic material as linkers between the metal oxide clusters, and the linkers absorb visible light to form excitons, and move the excitons through energy transfer between the linkers to transfer the electrons of the excitons to the molecular reduction catalyst.