An MOFs/MIPs catalyst, an in situ growth preparation method for same, and applications thereof are provided. The method comprises: uniformly mixing template molecules, a functional monomer, and a pore-foaming agent and performing a prepolymerization to produce a prepolymerization reaction product; uniformly mixing a cross-linking agent, an initiator, and the prepolymerization reaction product, heating, eluting the template molecules via a Soxhlet extraction, and drying to produce an imprinted polymer; uniformly mixing dimethylformamide, 2,5-dihydroxyterephthalic acid, ferrous chloride, water, methanol, and the imprinted polymer, heating, washing, using methanol for immersion and washing, and drying to produce the MOFs/MIPs catalyst.

A confined porphyrin Co(II), which is prepared by the following method: Equimolar amounts of aromatic aldehyde and pyrrole are condensed under acidic conditions to synthesize phenyl porphyrin compounds; the phenyl porphyrin compounds are metallized in a chloroform-methanol solution to obtain porphyrin Cu(II), which is brominated and demetallized to obtain confined porphyrin; the confined porphyrin is stirred and refluxed in a methanol solution for 12.0-24.0 h to obtain confined porphyrin Co(II). Its application is as follows: The confined porphyrin Co(II) is dissolved in cycloalkanes; the reaction system is sealed, and heated to 100 to 130° C. with stirring, to which oxygen is introduced to 0.2 to 3.0 MPa; the reaction is carried out for 3.0 to 24.0 h with stirring with the set temperature and oxygen pressure being maintained; and then the reaction solution is subjected to post-treatment to obtain the products.

The present disclosure provides a low-molecular-weight Tremella aurantialba glucuronoxylomannan (LTAG) as well as a preparation method and an application thereof, and specifically relates to the technical field of medicine. The LTAG provided in the present disclosure has a weight-average molecular weight of 8,000-24,000 Da. In the method of preparing LTAG as provided in the present disclosure, Tremella aurantialba glucuronoxylomannan is depolymerized by peroxides so as to get low-molecular-weight products, which are then exchanged into pharmaceutically acceptable salts through cation exchange resins. The resulting LTAG has a clear structure, a low viscosity and a good solubility, has a strong immune-enhancing activity, and is capable of acting on TLR4 receptor-activated macrophagocytes and promoting the production of various immune factors, so it can be used in the prevention and/or treatment of immunodeficiency-related diseases.

A method for oxidative cleavage of a compound with an unsaturated double bond is provided. The method includes the steps of: (A) providing a compound (I) with an unsaturated double bond, a trifluoromethyl-containing reagent, and a catalyst; ##STR00001## wherein, the catalyst is represented by Formula (II):
M(O).sub.mL.sup.1.sub.yL.sup.2.sub.z  (II); wherein, M, L.sup.1, L.sup.2, m, y, z, R.sub.1, R.sub.2 and R.sub.3 are defined in the specification; and (B) mixing the compound with an unsaturated double bond and the trifluoromethyl-containing reagent to perform an oxidative cleavage of the compound with the unsaturated double bond by using the catalyst in air or under oxygen atmosphere condition to obtain a compound represented by Formula (III): ##STR00002##

Aspects disclosed herein include a system for generating singlet oxygen in a gas, the system comprising: a substrate; and hexanuclear clusters operably immobilized on at least a portion of the substrate; wherein each hexanuclear cluster comprises a photosensitive octahedral core complex characterized by formula FX1a: M.sub.6X.sub.8 (FX1a); wherein each M is independently Mo, W, or Re; wherein each X is independently a halide anion ligand; wherein the clusters are exposed to the gas and the gas comprises O.sub.2 gas; wherein the clusters are exposed to a light; and wherein each hexanuclear cluster is a photosensitizer configured to generate the gaseous singlet oxygen when irradiated by the light in the presence of the O.sub.2 gas.

The present invention discloses in situ generated catalyst bound alpha radical compound represented by formula (I) or (II) and a single pot process for the preparation of oxo compounds by using in situ generated catalyst bound alpha radical compound of formula (I) or (II).

In one aspect, the disclosure relates to catalysts for electrochemical water splitting, in particular catalysts useful for oxygen evolution at an anode in electrochemical water splitting. The disclosed catalysts compositions comprise a catalyst core component, a shell component, and optionally a catalyst outer component; wherein the catalyst core component comprises a composition having the chemical formula M.sub.xP.sub.y; where M is a transition metal; wherein x is a number from about 1 to about 20; wherein y is a number from about 1 to about 20; wherein the shell component comprises a conducting polymer; and wherein the catalyst outer component is a transition metal that is not the same as the transition metal M. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

Various embodiments disclosed relate to a method of oxidizing sulfur-containing compounds. The method involves contacting a sulfur-containing compound with a helmet phthalocyaninato-type catalyst in the presence of an oxidant. The present invention also provides a method of removing undesired sulfur-containing compounds from a fluid, such as natural gas, crude oil or an aqueous waste stream.

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.

This invention relates to gels that undergo either oscillatory stepwise expansion or oscillatory expansion and contraction. An oscillatory reaction occurs within the gel, changing the conditions of the gel, and causing the gel to expand and optionally contract. The gels may be used for oscillatory release of a chemical agent.