Changzhou University

Mingyang He

Qun Chen

Shengchun Chen

Junfeng Qian

Meijun Wei

Weiyou Zhou

Haiqun Chen

Jian Lu

Lina Zhang

Chunping Fang

Xuan Dai

Wen Yi

Fu'an Sun

Shuhua Wang

Zhonghua Sun

Feng Li

Guangyu He

Zenan Ji

Zhenxiang Xia

Chengpeng Zhang

Chenchen Qin

Yuyang Zhu

Lu Tian

Zhongjing Chen

Qitao Zhang

An organic frame material having zinc containing isopoly-molybdic acid metal, a method of manufacturing the same, and the application thereof are provided. The organic frame material having zinc containing isopoly-molybdic acid metal includes a three-dimensional network structure in which the zinc ions coordinate with 2,3,5,6-tetrafluoro-bis (1,2,4-triazole-1-methyl) benzene ligands and trinuclear molybdate anions. The organic frame material having zinc containing isopoly-molybdic acid metal exhibits high catalytic activity, thermal stability, low toxicity, ease of synthetization and use, and strong reproducibility.

Organic frame material having zinc containing iso-molybdic acid metal, method of manufacturing the same, and application thereof

An isopoly-molybdic acid coordination polymer and a method of manufacturing the same are provided. It relates to the field of catalysts for polylactic acid. A chemical formula of the isopoly-molybdic acid coordination polymer is [MoO(μ-OH)(Htrz)]. Htrz is a 1,2,4-triazole ligand, and (MoO)is a binuclear isopoly-molybdic radical cation. (μ-OH) is the bridging hydroxyl group. Sodium molybdate dihydrate and zinc nitrate hexahydrate undergo hydrothermal reaction in a closed condition to obtain an isopoly-molybdic acid coordination polymer that has a secondary layered structure. The synthesis of the isopoly-molybdic acid coordination polymer is simple with high yield and reproducibility. The isopoly-molybdic acid coordination polymer shows high catalytic activity towards the bulk ring-opening polymerization of lactide. The resulting polylactic acid has a weight average molecular weight exceeding 110,000. The polylactic acid has great potential in the fields of medical, degradable and packaging materials.

Isopoly-molybdic acid coordination polymer for catalyzing ring-opening polymerization of lactide and method of manufacturing the same

An organic frame material having isopoly-molybdic acid metal for manufacturing polylactic acid and method of manufacturing the same is provided. The chemical formula of the organic frame material having isopoly-molybdic acid metal is [Cu(tfbtb)(β-MoO)0.5(HO)]. tfbtb is a 2,3,5,6-tetrafluoro-bis(1,2,4-triazole-1-methyl) benzene ligand, and [β-MoO] is a β type octamolybdate anion. Sodium molybdate dihydrate, copper salt and organic ligand 2,3,5,6-tetrafluoro-bis (1,2,4-triazole-1-methyl) benzene undergo hydrothermal reaction in a closed condition to form the organic frame material having copper containing isopoly-molybdic acid metal that has a three-dimensional structure. The synthesis method is simple with high yield and reproducibility. The organic frame material having isopoly-molybdic acid metal shows high catalytic activity towards the ring-opening polymerization of lactide. The resulting polylactic acid has a weight average molecular weight exceeding 60,000. The polylactic acid has great potential in the fields of packaging materials and medical high polymer materials.

Organic frame material having isopoly-molybdic acid metal for manufacturing polylactic acid and method of manufacturing the same

An organic frame material having a cobalt-containing isopoly-molybdic acid metal, a method of manufacturing the same, and applications thereof are provided. The organic frame material having a cobalt-containing isopoly-molybdic acid metal includes a three-dimensional network structure comprising cobalt ions coordinated with 2,3,5,6-tetrafluoro-bis (1,2,4-triazole-1-methyl) benzene ligands and trinuclear molybdate anions. The organic frame material having a cobalt-containing isopoly-molybdic acid metal has higher catalytic activity towards the bulk ring-opening of p-dioxanone. The resulting poly(p-dioxanone) has a weight average molecular weight exceeding 70,000 and is capable of being applied in the field of high polymer materials.

Organic frame material having cobalt-containing isopoly-molybdic acid metal, method of manufacturing the same, and application thereof

An isopoly-vanadic acid coordination polymer catalyst, method of manufacturing the same, and application thereof are provided. The isopoly-vanadic acid coordination polymer catalyst has a chemical formula of [Co(atrz)(VO)]. The atrz is a 4-amino-1,2,4-triazole ligand, and [VO] is a binuclear vanadate anion. The isopoly-vanadic acid coordination polymer catalyst shows strong thermal stability, and it is easy to synthesize with high reproducibility. The isopoly-vanadic acid coordination polymer catalyst has a good catalytic activity towards the bulk ring-opening of p-dioxanone. The resulting poly(p-dioxanone) is stable and uniform. The high molecular weight of the resulting poly(p-dioxanone) has great potential in high polymer materials, in particular the field of medical high polymer materials.

Isopoly-vanadic acid coordination polymer catalyst, method of manufacturing the same, and application thereof

A ternary composite catalyst of diethylzinc and yttrium trifluoroacetate loaded on chitin for copolymerization of carbon dioxide, epoxy cyclohexane and ethylene oxide is provided. The ternary composite catalyst exhibits strong catalytic activity for the ternary copolymerization of carbon dioxide, cyclohexane oxide and ethylene oxide. A high molecular weight and content of ester chain is maintained. Conventional rare earth ternary catalysts leave residues in the polymer, and the polymer requires rinsing with hydrochloric acid. The ternary composite catalyst can be removed through filtration. The average molecular weight of the resulting polycarbonate is more than 100,000, and the ester chain content is more than 90%. The resulting polymer has a lower metal content. The ternary composite catalyst can be used in agricultural film, disposable packaging and other polymer materials.

Catalyst for copolymerization of carbon dioxide and epoxy and method of manufacturing the same

An isopoly-molybdic acid coordination polymer catalyst for manufacturing polycaprolactone and method of manufacturing the same are provided. It relates to a field of catalysts from polycaprolactone. The chemical formula of the isopoly-molybdic acid coordination polymer catalyst is [Cu(trz)(γ-MoO)(HO)]. In the chemical formula, trz is 1,2,4-triazole negative monovalent anion, and [γ-MoO] is a γ type octamolybdate anion. This synthesis method offers higher yield with strong reproducibility. The resulting crystal products have higher purity. The isopoly-molybdic acid coordination polymer catalyst shows high catalytic activity towards the bulk ring-opening polymerization of caprolactone. The resulting polycaprolactone has a weight average molecular weight exceeding 50,000 and a narrow molecular distribution. The polycaprolactone has great potential in the application of low- to medium-temperature thermoplastic medical materials.

Isopoly-molybdic acid coordination polymer catalyst, method of manufacturing the same and application thereof

Provided in the present invention is a preparation method for a nano organometallic carboxylate which effectively solves the problems of a complex washing process, and cumbersome, dangerous and uneconomical preparation of lye in traditional methods for producing organometallic carboxylates. A new method for preparing high-quality organometallic carboxylates by using a carboxylic acid, caustic soda, a metal oxide or a hydroxide as starting materials, and using ball milling to assist reaction thereof. The present invention not only efficiently utilizes lye, it also obtains high-quality organometallic carboxylates, which overcomes the technical prejudice that the prior art uses calcium chloride, sodium chloride and other salts for poor reaction efficiency. The problem in environmental pollution caused by the washing waste liquid in the existing process is fundamentally solved. At the same time, addition of non-ionic surfactants makes ball milling more efficient and significantly reduces the particle size of the product.

Preparation method for nano organometallic carboxylate

The present invention provides a method for preparing organometallic composite material, comprising: providing PVC resin, activated calcium carbonate, plant fiber, calcium stearate, barium sulfate, paraffin, sodium bicarbonate, zinc laurate, nanometre titanium dioxide, organometallic salt, shell powder, carbon nanotube, talcum powder and stabilizer; mixing and heating; subject to first cooling after extrusion and second cooling under vacuum; towing to obtain the organometallic composite material, wherein the organometallic salt is a benzoic acid metal salt mixture. The present method can significantly reduce the processing temperature of PVC composite by 20 to 50&#xb0; C., and also increase the toughness and strength of the material so as to alleviate the exudation of the composite material as in the conventional technologies and extend the lifespan of the composite material.

Method for preparing organometallic composite material

The present disclosure relates to a process for acid-catalyzed decomposition of aryl &#x3b1;-hydroperoxide with a continuous flow tubular reactor. The process is a novel process performed in a tubular reactor, taking the aryl &#x3b1;-hydroperoxide such as cumene hydroperoxide (CHP) as a raw material and taking acids as a catalyst, performing acid-catalyzed decomposition of the aryl &#x3b1;-hydroperoxide solution in a short reaction time ranging from tens of seconds to several minutes, thereby obtaining the phenols; wherein an inert component may be filled in the reactor, so that the effects of heat transmission and mass transfer can be enhanced. The aryl &#x3b1;-hydroperoxide and acid are respectively introduced by a metering pump into a mixing module to be mixed, and then enter the tubular reactor to be reacted so as to produce the products such as phenols.

Process for acid-catalyzed decomposition of aryl &#x3b1;-hydroperoxide with continuous flow tubular reactor

The present invention relates to the technical field of peroxide decomposition, and discloses a method for preparing phenol, which comprises the following steps: (1) mixing cumene hydroperoxide and liquid acid or solid acid with a solvent to form a homogeneous solution or uniformly dispersed system; (2) loading the homogeneous solution or uniformly dispersed system of cumene hydroperoxide with a homogeneous solution or uniformly dispersed system of acid into a preheating module and preheating in a micro-channel continuous flow mode, preliminarily mixing the preheated materials for reaction in a mixing module in a micro-channel continuous flow mode, and then further mixing the materials for reaction in a series of mixing and reaction module groups in a micro-channel continuous flow mode, to obtain phenol. The method provided in the present invention is easy, simple and safe to operate, can implement continuous production of phenol product at a high yield ratio; in addition, since the reaction in the present invention is a cracking reaction, which releases heat strongly, the safety factor of the process is significantly improved owing to the strong heat release characteristic in conjunction with the unique heat transfer property of the micro-channels. With the method provided in the present invention, the yield of the product is higher than 99%.

Growing community of inventors

Changzhou, China

Mingyang He