The application belongs to the field of material preparation and environments, and specifically, to a precious metal loaded Covalent Organic Framework (COF) composite material and a preparation method therefor. The components of the composite material include precious metal nanoparticles and TpMA. The preparation method includes first mixing the TpMA, chloroauric acid and methanol; and then adding sodium borohydride for reaction, so as to obtain the composite material. The precious metal nanoparticle loaded COF material prepared in the application may be used as a catalyst, which is a novel heterogeneous catalyst with simple, green and efficient preparation; and the material is high in catalytic activity, fast in degradation rate and short in time, and may catalyze the reduction of high concentration pollutants.

Provided is an ionic solid having pores for incorporating a substance therein.

The application belongs to the technical field of photocatalyst preparation, and specifically relates to a MOFs/COFs heterojunction composite photocatalyst and a preparation method and application thereof. The application uses melamine (MA), 1,3,5-trimethylphloroglucinol (Tp), 2-aminoterephthalic acid, and ferrous acetate as reaction raw materials, a catalyst is added, and a mechanical grinding method is used, to prepare the MOFs/COFs heterojunction composite photocatalyst. The catalyst is simple and green in preparation method, and has the better degradation efficiency for pollutants in water, especially carbamazepine.

Provided are a catalyst composition with improved processability and chemical warfare agent degradation ability, a film composite manufactured by casting the same, and a preparation method thereof. Specifically, provided are a catalyst composition including a copolymer of a first polymer and a second polymer; and a metal-organic framework (MOF), and a film composite including the same, wherein processability and catalytic activity are improved.

Compositions comprising metal organic frameworks and related methods and uses are generally provided, including use in selective carbonylation of heterocyclic compounds.

The present invention provides a method for preparing a cyclic carbonate, which has the advantages of high yield, mild reaction conditions, high catalytic efficiency under room temperature and 1 atm pressure conditions, and wide substrate scopes. It is not only suitable for monosubstituted epoxides, but also suitable for disubstituted epoxides. The method comprises the step of reacting epoxides of Formula (I) with carbon dioxide in the presence of a quaternary ammonium salt and a catalyst, to obtain a cyclic carbonate of Formula (II). The reaction formula is:

##STR00001##

A catalyst system comprising a combination of a tin-based moisture-cure catalyst, a titanium(IV) compound that is titanium dioxide or a titanium alkoxide, and zinc oxide. A catalyst masterbatch comprising the catalyst system and a carrier resin. A moisture-curable prepolymer formulation comprising the catalyst masterbatch and a (hydrolyzable silyl group)-functional polyolefin prepolymer. Methods of making and using same. Cured polymer products made therefrom. Articles containing or made from same.

The disclosed relates to a method for preparing an organic zinc catalyst used in the synthesis of a polyalkylene carbonate resin, an organic zinc catalyst provided therefrom, and a method for preparing a polyalkylene carbonate resin using the catalyst. The organic zinc catalyst according to the present disclosure includes a predetermined amount of Zr on the surface through a simple process, and thus can exhibit improved catalytic activity as compared to a conventional catalyst in the polymerization process for preparing a polyalkylene carbonate resin.

A process for the ring-opening copolymerisation of epoxides with carbon dioxide for the preparation of a polycarbonate is described. Also described are catalysts useful in the aforementioned process. The heterobimetallic catalysts present a number of advantages over catalysts that have conventionally been used for this process.

The instant disclosure provides an organometallic compound of Formula I:

##STR00001##

wherein R is selected from —C.sub.1-10 alkyl or —C(O)C.sub.1-10 alkyl; R.sub.1 is selected from —C.sub.1-10 alkyl, —C(O)C.sub.1-10 alkyl, —C(O)C.sub.1-10 alkylN.sup.+R.sub.aR.sub.bCl.sup.−, —C(O)C.sub.1-10 alkylN(CO)R.sub.a, —C.sub.1-10 alkylN.sup.+R.sub.aR.sub.bCl—, or —C.sub.1-10 alkylN(CO)R.sub.a, wherein R.sub.a, and R.sub.b is independently selected from H, C.sub.6-12 aryl, C.sub.1-10 alkyl, C.sub.6-12 aryl, or C.sub.1-10 alkyl; R, and R.sub.1 can be taken together to form a monocyclic 6-8 membered ring; M is selected from Group VI-B metals; and m and n is independently 1 to 3. A process for obtaining the organometallic compound is also provided.