49 results about "Diphosphorus" patented technology

An ytterbium-doped optical fiber of the present invention includes: a core which contains ytterbium, aluminum, and phosphorus and does not contain germanium; and a cladding which surrounds this core. The ytterbium concentration in the core in terms of ytterbium oxide is 0.09 to 0.68 mole percent. The molar ratio between the phosphorus concentration in the core in terms of diphosphorus pentoxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 30. The molar ratio between the aluminum concentration in the core in terms of aluminum oxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 32. The molar ratio between the above aluminum concentration in terms of aluminum oxide and the above phosphorus concentration in terms of diphosphorus pentoxide is 1 to 2.5.

The present invention provides a method of efficiently producing a lithium ion conductive inorganic solid electrolyte having high ionic conductivity, including: conducting a melt reaction of lithium sulfide containing 0.15 mass % or less of each of a lithium salt of sulfur oxide and lithium N-methylaminobutyrate, and one or more components selected from diphosphorus pentasulfide, elemental phosphorus, and elemental sulfur; rapidly cooling the resultant; and subjecting the resultant to heat treatment, and a high-performance lithium battery using the electrolyte. In particular, the present invention provides a high-performance lithium battery having high energy density, which is obtained by using a positive electrode active material having an operating potential of 3 V or more, a negative electrode active material having a reduction potential of 0.5 V or less, and a lithium ion conductive inorganic solid electrolyte in contact with at least the negative electrode active material, the lithium ion conductive inorganic solid electrolyte being produced from lithium sulfide and one or more components selected from diphosphorus pentasulfide, elemental phosphorus, and elemental sulfur, and which can be used as a monolayer.

The invention relates to a soil fertilizer technique, in particular to a long-acting slow-release corn special blending fertilizer and a preparation method thereof to solve the problems that the nitrogen and phosphorus utilization rate of the fertilizer is low, the after manuring in the corn growth period consumes a large amount of time and labor and the like. The blending fertilizer comprises the following components in percentage by weight: 45 to 58 percent of nitrogen fertilizer, 16 to 25 percent of phosphate fertilizer, 16 to 25 percent of potassium fertilizer, and 4 to 14 percent of nitrogen phosphorus fertilizer synergist; and nutritive substances of the blending fertilizer comprise the following components in percentage by weight: 24 to 28 percent of pure nitrogen, 8 to 12 percent of diphosphorus pentanitride, and 10 to 15 percent of potassium oxide. The preparation method comprises the following steps: adding the granular nitrogen fertilizer, phosphate fertilizer, potassium fertilizer and the nitrogen phosphorus fertilizer synergist into a mixing and stirring machine according to the weight ratio, mixing and stirring the materials evenly to obtain the long-acting slow-release corn special blending fertilizer, and performing sub-package to obtain the finished product; or selecting a urease inhibitor, a nitrification inhibitor and a phosphate fertilizer synergist to granulate by mixing so as to obtain the granular nitrogen phosphorus fertilizer synergist, and then blending the granular nitrogen phosphorus fertilizer synergist with the granular nitrogen fertilizer, phosphate fertilizer and potassium fertilizer to obtain the finished product. The long-acting slow-release corn special blending fertilizer and the preparation method have simple process and easy implementation, are suitable for one-step basal application without after manuring for corn production in the Northeast, and reduce the usage amount by 10 to 20 percent without reducing the yield.

The invention discloses a phosphorus-containing and nitrogen-containing expansion type flame-retardant polymer and a preparation method thereof. The preparation method is characterized in that: the phosphorus-containing and nitrogen-containing expansion type flame-retardant polymer is prepared by solution polycondensation reaction or melt polycondensation reaction of diphosphorus acylchloride or diphosphorus acylbromide and a diamine functional group-containing compound. The expansion type flame-retardant polymer comprises phosphorus-containing and nitrogen-containing phosphamide with a structure unit formula shown in the specifications, wherein n is an integer of from 1 to 200; R1 is oxygen or sulphur; and R is alkoxy, alkylthio, aryloxy or arylthio. The product of the invention has high compatibility with a high molecular material matrix, difficult transfer and excellent durability. The preparation method has the advantages of simpleness, easy control, high yield, wide sources of the required raw materials and easy industrialized production. A high polymer with a flame-retardant function can be directly prepared, or the high polymer serving as a flame-retardant additive can be added into various polyesters, polyamide, polyolefin, epoxy resin, polystyrene, high impact polystyrene or acrylonitrile butadiene styrene (ABS) polymer.

An ytterbium-doped optical fiber includes: a core which contains at least ytterbium, aluminum, and phosphorus; and a cladding which encircles the core, wherein an aluminum oxide equivalent concentration of the aluminum in the core is 0.2 mol % or more, a diphosphorus pentaoxide equivalent concentration of the phosphorus is higher than the aluminum oxide equivalent concentration, and the core either does not contain germanium or contains less than 1.1 mol % of germanium in a germanium dioxide equivalent concentration.

Provided is an ytterbium-doped optical fiber including a core containing at least ytterbium, aluminum and phosphorous and a clad surrounding the core, wherein a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core is equal to a molar concentration of aluminum oxide with respect to aluminum in the core, wherein a ratio of a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core to the molar concentration of ytterbium oxide with respect to ytterbium in the core is higher than or equal to 10 and lower than or equal to 30, and wherein a relative refractive index difference between the core and the clad is higher than or equal to 0.05% and lower than or equal to 0.30%.

A solid phosphoric acid catalyst which has high activity and attains high dimer selectivity in olefin dimerization reactions; and efficient methods of olefin dimerization reaction. The solid phosphoric acid catalyst comprises a carrier and phosphoric acid supported thereon. When the solid phosphoric acid catalyst is heated at 250° C. for 20 minutes, heating loss of water is 50 mass % or more based on diphosphorus pentaoxide (P2O5) derived from the phosphoric acid. One of the methods of olefin dimerization reaction comprises bringing an olefin-containing feed material containing water in an amount of 10-1000 mass ppm into contact with the catalyst to initiate the reaction. Another method of olefin dimerization reaction comprises successively conducting the following steps: a step (1) in which a hydrocarbon containing water in an amount of 10-1000 mass ppm and containing substantially no olefin is brought into contact with the above mentioned catalyst; a step (2) in which the pressure and temperature are regulated to conditions suitable for the initiation of olefin dimerization reaction; and a step (3) in which the hydrocarbon is displaced with an olefin-containing feed material containing water in an amount of 10-1000 mass ppm to bring the olefin into contact with the solid phosphoric acid catalyst and thereby to initiate the reaction. Still another method is the olefin dimerization reaction method described above wherein the temperature in the reaction initiation conditions is higher by 5-50° C. than the reaction•temperature in olefin dimerization in a stationary state after the step (3).

The invention relates to an ethylene tetramerization catalyst composition which comprises diphosphorus ligand shown in formula I, a transition metal compound, an aluminum-containing promoter and tert-butyl hydroperoxide. The invention further provides an ethylene tetramerization method. The catalyst composition provided by the invention is applied to ethylene tetramerization, is high in reaction activity, is capable of producing 1-octylene with high selectivity, and the selectivity of 1-octylene is 74% or higher.

The invention relates to the field of compound fertilizers, in particular to a coated slow-release compound fertilizer containing oxidized graphene. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of 1,250-2,000-mesh diatomite, 0.1-0.2 part of gibberellins, 20-24 parts of potassium dihydrogen phosphate, 10-12 parts of silkworm excrement, 8-10 parts of sawdust, 15-18 parts of diphosphorus pentoxide, 6-8 parts of sodium polyaspartate, 10-12 parts of a calcium magnesium phosphate fertilizer, 8-12 parts of peat soil, 2-4 parts of ferrous sulfate, 9-13 parts of potassium fulvate, 15-18 parts of decomposed cattle manure, 2-4 parts of withered persimmon leaves, 1-2 parts of sodium molybdate, 10-12 parts of wheat straw powder, 1-2 parts of oxidized graphene, 3-4 parts of fructooligosaccharides, 20-25 parts of waterborne polyurethane emulsion, 1-2 parts of an epoxy silane crosslinker and 4-5 parts of an assistant. According to the compound fertilizer, various raw materials are used; multiple nutritional ingredients are provided; the nutritional ingredients are coated with diatomite and a slow-release coating agent, so that the nutrient loss is hardly caused, the fertilizer efficiency lasts for a long time, the crop yield and the crop quality can be remarkably improved, and the planting benefit is relatively high.

The invention discloses a method for synthesizing methyl propionate through homogeneous hydrogen esterification of ethylene, which comprises the following step: carrying out hydrogen esterification onraw materials ethylene, carbon monoxide and methanol in the presence of a palladium main catalyst, a metal ion cocatalyst, an acidic assistant and a ligand organic diphosphorus compound to synthesizemethyl propionate. According to the method for synthesizing methyl propionate through homogeneous hydrogen esterification of ethylene, a bimetallic catalyst is used, so that the reaction activity andselectivity of a catalytic system are improved, and ethylene hydrogen esterification can be efficiently catalyzed to synthesize methyl propionate at lower temperature and pressure; by adding the organic diphosphine ligand, the activity of the palladium catalyst is improved, the space-time yield of synthesizing methyl propionate through hydrogen esterification of ethylene is greatly improved, themaximum space-time yield reaches 15.43 mol.L<-1> h<-1>, and the good commercial value is achieved.

Provided is an ytterbium-doped optical fiber including a core containing at least ytterbium, aluminum and phosphorous and a clad surrounding the core, wherein a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core is equal to a molar concentration of aluminum oxide with respect to aluminum in the core, wherein a ratio of a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core to the molar concentration of ytterbium oxide with respect to ytterbium in the core is higher than or equal to 10 and lower than or equal to 30, and wherein a relative refractive index difference between the core and the clad is higher than or equal to 0.05% and lower than or equal to 0.30%.

A process for the preparation of ipidacrine (I) (9-amino-2,3,5,6,7,8-hexahydro-1H-cyclopenta[b]quinoline)which comprises the reaction of diphosphorus pentaoxide with a trialkyl phosphate and a hydroxyl compound in a hydrocarbon solvent to thereby prepare a polyphosphoric ester having one or more free hydroxyl groups and serving as a dehydrocondensing agent and using this ester without isolation in the condensation of 2-amino-1-cyclopentene-1-carbonitrile with cyclohexanone through dehydration.

A zinc oxide-alumina-silica-based crystallized glass containing zinc oxide, alumina and silica as main components, and zirconia as a nucleating agent, the main components comprising at a ratio of 20-30% by mass of zinc oxide, 15-25% by mass of alumina and 50-60% by mass of silica, the main components amounting to 100% by mass in total, the nucleating agent being contained in an amount of 3-6 parts by mass based on 100 parts by mass of the main components, and at least one component selected from the group consisting of lithium oxide, sodium oxide, potassium oxide, diphosphorus pentoxide, niobium oxide and tantalum oxide being contained as a modification component in addition to the main components and the nucleating agent.

An ytterbium-doped optical fiber of the present invention includes: a core which contains ytterbium, aluminum, and phosphorus and does not contain germanium; and a cladding which surrounds this core. The ytterbium concentration in the core in terms of ytterbium oxide is 0.09 to 0.68 mole percent. The molar ratio between the phosphorus concentration in the core in terms of diphosphorus pentoxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 30. The molar ratio between the aluminum concentration in the core in terms of aluminum oxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 32. The molar ratio between the above aluminum concentration in terms of aluminum oxide and the above phosphorus concentration in terms of diphosphorus pentoxide is 1 to 2.5.

The invention relates to a method for synthesizing chiral 3-trifluoromethyl-3, 4-dihydroquinoxalinone by palladium-catalyzed asymmetric hydrogenation. A catalytic system is a chiral diphosphorus complex of palladium, and the reaction conditions are as follows: the temperature is 0-80 DEG C, the solvent is 2, 2, 2-trifluoroethanol or hexafluoroisopropanol, the pressure ranges from 100 psi to 1000 psi, the ratio of the substrate to the catalyst is 33 / 1, the used metal precursor is palladium trifluoroacetate, and the used chiral ligand is a chiral diphosphorus ligand. The preparation method of the catalyst comprises the following steps: stirring a metal precursor of palladium and a chiral diphosphine ligand in acetone at room temperature, and then carrying out vacuum concentration to obtain the catalyst. Corresponding chiral dihydroquinoxalinone containing trifluoromethyl can be obtained by hydrogenating quinoxalinone containing trifluoromethyl, and the enantiomeric excess of the dihydroquinoxalinone containing trifluoromethyl can reach 99%. The method is simple, convenient and practical to operate, high in enantioselectivity and high in yield, and the reaction has green atom economyand is environmentally friendly.

The method of catalyzing hydrogenation of ketone enantioselectively with homogeneous Pt catalyst system has chiral diphosphorus complex of Pt as catalyst system, reaction temperature of 25-75deg.c, solvent of 2, 2, 2-trifluoroethanol, reaction pressure of 3-70 atm and chiral diphosphorus ligand used. The homogeneous Pt catalyst system is prepared through mixing metal precursor of Pt and chiral diphosphorus ligand at room temperature and the subsequent vacuum concentrating. The catalyst can result in asymmetrical inducing as high as 92 % on alpha-one-benzamide substituted ketone. The present invention has simple operation, facile material, high reaction selectivity, high yield and environment friendship.

The invention relates to a preparation method of (R)-1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethanol. The preparation method comprises the following steps: providing a compound with a structureshown as a formula (II); carrying out a catalytic hydrogenation reaction on the compound with the structure shown in the formula (II) to prepare a compound shown in a formula (I), wherein a catalystadopted in the catalytic hydrogenation reaction has a structure as shown in a formula (A) which is described in the specification. In the formula (A), X and Y are halogen independently; n ranges from12 to 65; a fragment as described in the specification is a diphosphorus ligand; R1, R2 and R3 are each independently selected from a group consisting of C1-16 alkyl groups, three-to-eight-membered cycloalkyl groups, five-to-ten-membered aryl groups and five-to-ten-membered heteroaryl groups; and R4 is H or a C1-8 alkyl group. The method can effectively reduce heavy metal residues while improvingan asymmetric conversion rate, and lays a foundation for industrial production of apremilast.

The present invention relates to chiral diphosphorus compounds and their transition metal complexes, to a process for preparing chiral diphosphorus compounds and their transition metal complexes and also to their use in asymmetric syntheses.

The invention discloses compound fertilizer for agriculture and relates to the technical field of agricultural fertilizer. The compound fertilizer comprises, by mass, 20 to 40 parts of nano-chitosan-modified attapulgite, 20 to 40 parts of humic acid, 8 to 22 parts of ammonium bicarbonate, 10 to 30 parts of methylene succinic acid, 5 to 15 parts of diphosphorus pentoxide, 10 to 30 parts of triacontanol, 5 to 10 parts of potassium sulfate, 10 to 30 parts of sodium octahydrate tetrahydrate and 5 to 10 parts of ferrous sulfate. The compound fertilizer utilizes raw materials most commonly used in daily production, has a scientific formula, contains nutrients required in a crop cultivation process, has good fertilizer effects, does not cause secondary environmental pollution, improves soil hardening, repairs and the ecological environment of the soil, is conducive to crop yield increasing and has a potential value in wide range promotion and use.

A zinc oxide-alumina-silica-based crystallized glass is provided, containing zinc oxide, alumina and silica as main components, and zirconia as a nucleating agent. The main components are provided in a ratio of 20–30% by mass of zinc oxide, 15–25% by mass of alumina and 50–60% by mass of silica to amount to 100% by mass in total. The nucleating agent is contained in an amount of 3–6 parts by mass based on 100 parts by mass of the main components. The crystallized glass also includes at least one modification component selected from the group consisting of lithium oxide, sodium oxide, potassium oxide, diphosphorus pentoxide, niobium oxide and tantalum oxide in addition to the main components and the nucleating agent.

The invention discloses a method for synthesizing diphosphorus monoxide complex, which is synthesized by using tert-butyl propyl carbonate through the following steps that: 1) in the presence of a catalyst of hetero-atom containing organic alkali, tert-butyl propyl carbonate and a phosphine oxide undergo a condensation reaction in an organic solvent, and then a reaction mixture is extracted by methylene dichloride to form a monophosphine oxide synthon; and 2) under the action of an alkaline material, the monophosphine oxide synthon and disubstituted phosphor undergo a hydrogenation reaction, and a reaction mixture is extracted by methylene dichloride to form the diphosphorus monoxide complex. The method has the advantages that: the synthesis method is simple, economic and practical, and can effectively synthesize the diphosphorus monoxide and overcome the drawbacks of undesirable selectivity and low yield; the synthesized diphosphorus monoxide complex is provided with functional groups such as an ester group with respect to spatial connection groups, belongs to a multifunctional diphosphorus monoxide complex, provides conditions for the expansion of the application range of the complexes, and is particularly applied in the fields of catalysis of solid-carried catalysts, nuclear pharmaceuticals and the like.

The invention discloses a compound fertilizer for paddy field growing, which is prepared from the following materials in parts by weight: 1 to 5 parts of acid-resistant sodium carboxymethylcellulose,3 to 9 parts of diphosphorus oxide, 6 to 12 parts of calcium magnesium phosphate fertilizer, 2 to 7 parts of fulvic acid, 7 to 12 parts of phosphorous sea bird manure, 8 to 15 parts of composted cow dung, 8 to 15 parts of sugarcane residue, 1 to 4 parts of lactobacillus plantarum, 10 to 20 parts of edible fungus residue, 1 to 5 parts of isomaltooligosaccharide, 1 to 4 parts of woody plant powder,1 to 6 parts of itaconic acid, 0.5 to 1 part of cellulose, 4 to 7 parts of earthworm powder, 3 to 8 parts of medium trace elements, 2 to 5 parts of propionyl brassinolide, 5 to 9 parts of water-retaining agent, 1 to 5 parts of methoxysuccinic acid, 0.2 to 0.6 parts of epsilon-polylysine, 10 to 15 parts of broken peanut hull, 7 to 10 parts of puffed chicken manure and 2 to 7 parts of animal bone powder. The effect of the environment-friendly fertilizer disclosed by the invention is comprehensive and persistent, the fertilizer does not need to be frequently supplemented, environment pollution caused by chemical fertilizers is reduced, and moreover, plants which use the fertilizer have the characteristics of high growing speed, good growth and the like.

The invention discloses a halogen-free flame-retardant biodegradable composite material as well as a preparation method and application thereof. The halogen-free flame-retardant biodegradable composite material is prepared by the following steps: using a biodegradable high-molecular compound as a matrix; using a functionalized chitosan as a flame retardant, wherein the functionalized chitosan is a biomass flame retardant which integrates flame retardancy and metal synergistic effect and is synthesized from chitosan, diphosphorus pentoxide, metal salt and other raw materials through chemical action; and uniformly mixing the matrix with the flame retardant through an internal mixer, wherein a mass ratio of the high-molecular compound to the flame retardant is 100:(0.8-4.0). The halogen-free flame-retardant biodegradable composite material prepared by the invention has good thermal stability and flame-retardant property, and can be widely used in the fields of industrial packaging materials, disposable articles, sanitary articles, laminated materials and the like.

The invention relates to a single chiral center catalyst, a preparation method thereof and a method for catalytically synthesizing chiral alcohol compounds and chiral alpha-allyl alcohol. The single chiral center catalyst has a structure as shown in the following general formula shown in the description, wherein in the formula, Z is -S-, -N = CH- or -CH = CH-. According to the catalyst, the achiral diphosphorus ligand is adopted, and chiral elements of the diamine ligand are reserved and adjusted at the same time, so the chirality of catalyzing asymmetric reaction can be independently controlled, and the synthesis difficulty and cost of the chiral catalyst are greatly reduced; the catalyst can be used for catalyzing asymmetric transfer hydrogenation of aryl-aryl substituted ketone compounds, heterocyclic aromatic-aryl substituted ketone compounds and heterocyclic aromatic-heterocyclic aryl substituted ketone compounds, preparing chiral secondary alcohol compounds and achieving kinetic resolution of racemic alpha-allyl alcohol compounds.

The invention relates to an ezetimibe intermediate and a preparation method of ezetimibe. The ezetimibe intermediate has a structure as represented by a formula (I). The preparation method comprises the following steps: providing a compound represented by a formula (II); subjecting the compound as shown in a formula (II) to an asymmetric catalytic hydrogenation reaction under the action of a P-BIAMH catalyst to prepare a compound shown as the formula (I), wherein the P-BIAMH catalyst has a structure as shown in a formula (A) which is described in the specification. In the formula (A), X and Yare halogen independently; R1 is H or a C1-9 alkyl group; R2 is a high-molecular polymer; and a fragment as described in the specification represents a diphosphorus ligand. The method has the advantages of high conversion rate and high safety, and is especially suitable for industrial production.

The invention discloses a production system and a production method of high-purity phosphoric acid. The production system of high-purity phosphoric acid includes: a reduction-oxidation furnace, in which the raw material containing phosphate rock undergoes a reduction-oxidation reaction to generate the first gas containing phosphorus pentoxide vapor and dust; a heat exchange unit, which processes the first gas After the first gas, the second gas with a temperature of 365-500°C is output; the high-temperature filter unit intercepts the dust in the second gas and outputs a dust content of ≤10mg / Nm 3 the phosphorus pentoxide vapor; the condensing unit, which condenses the phosphorus pentoxide vapor into a third gas containing phosphorus pentoxide solid; the low-temperature filter unit, which intercepts the particulate matter in the third gas to obtain pentoxide Phosphorus solid: a solid absorption unit, absorbing the phosphorus pentoxide solid with an absorbent to obtain high-purity phosphoric acid. The process of the invention is simple and easy to control, and high-purity and high-concentration phosphoric acid can be obtained.