6 results about "Catalytic complex" patented technology

The application belongs to the field of biological catalytic materials, and particularly relates to a biological catalyst based on a palladium single atom, a biological catalytic complex thereof, and a preparation method and application thereof. A coordination complex (Pd-Tpb) based on a palladium single atom is designed from scratch, and it is found for the first time that the coordination complex can be used as a biological catalyst with ROS generation activity and tumor killing performance with radioenhancement. On this basis, the Pd-Tpb is used to modify lactobacillus probiotics, and the obtained biological catalytic complex is used for biological catalysis and radiosensitization treatment, and it is found that the biological catalytic complex has a significantly improved radiosensitization effect and has the effect of eradicating primary and metastatic tumors.

The application provides a treatment process of cyanide-containing wastewater, and belongs to the technical field of industrial wastewater treatment. The process comprises the following steps: firstly, pretreating the cyanide-containing wastewater to obtain cyanide-containing pretreated effluent; then, mixing the cyanide-containing pretreated effluent with passivation wastewater; and finally, sequentially performing low-chlorine pre-oxidation, composite catalytic complex-oxidation, residual chlorine regulation, heavy metal instant capture and coagulation sedimentation treatment. The process can improve the removal stability of complex cyanide and copper, nickel, zinc and other heavy metals, reduce the consumption of oxidants and residual chlorine, and improve the adaptability of subsequent biochemical treatment.

This application relates to the field of chemical synthesis technology, specifically disclosing a method for preparing a plasticizer by catalytic esterification. The catalyst used in this method is a temperature-sensitive ternary bifunctional catalytic complex, and the raw materials include p-hydroxybenzenesulfonic acid, N,N-dimethyldodecyl tertiary amine, and p-dodecylbenzoic acid. The preparation method is as follows: first, the above-mentioned catalytic complex is prepared; then, a carboxylic acid or anhydride substrate, a fatty alcohol substrate, and the catalytic complex are added to a reaction vessel. After replacement with an inert atmosphere, the reaction process is dynamically controlled based on the water effluent rate. The esterification reaction is completed by segmented temperature control. The product is then obtained by cooling to precipitate the catalyst, pressure filtration separation, vacuum distillation, and decolorization filtration. The plasticizer prepared by this application can be used for the modification and processing of polymer materials such as polyvinyl chloride. The product has high purity and few impurities; the preparation method has high catalytic activity, easy catalyst recovery, and low raw material alcohol consumption. The catalyst can be recycled, which has the advantages of being green, environmentally friendly, and simple.

This invention discloses a novel bisphosphine ligand, its preparation method, and its applications, belonging to the field of organometallic catalysis technology. The invention utilizes a chemical synthesis method, starting with ferrocene or 1,1'-dimethylferrocene, followed by butyl lithiation (or bromination), introduction of an aldehyde group (or palladium-catalyzed hydromethyl esterification), aldehyde reduction (or ester reduction), halogenation of the hydroxyl group (or bis-OTf oxidation), and condensation with a lithium phosphine reagent (or direct Herrman-Beller catalytic coupling), to obtain the novel bisphosphine ligand based on the ferrocene framework. The catalytic complex of this bisphosphine ligand and palladium exhibits excellent catalytic activity and selectivity in the alkoxycarbonylation reactions of terminal alkenes, internal alkenes, and polysubstituted alkenes.

Disclosed herein is the selective functionalization of one or more hydrocarbons ranging from the longest macromolecules to methane as the smallest. Functionalization is achieved through C—H activation of the one or more hydrocarbons and is carried out by the catalytic complex described herein. Also disclosed is the compound of formula (I) and the compound of formula (II).

The invention discloses preparation of a diphenyl ether diphosphine ligand and application of the diphenyl ether diphosphine ligand in carbonyl esterification reaction, and belongs to the technical field of organic metal catalysis. The novel diphenyl ether diphosphine ligand with large steric hindrance is obtained by transforming a diphenyl ether skeleton through a chemical synthesis method: introducing an electron-donating group with steric hindrance at a 4, 4 'site, carrying out metallization treatment at a 2, 2' site by adopting a strong-basicity lithium reagent, and then reacting with a phosphonium chloride reagent. The diphosphine ligand and palladium catalytic complex shows excellent catalytic activity and selectivity in the alkoxycarbonylation reaction of terminal olefin, internal olefin and polysubstituted olefin.