1274 results about "Mass content" patented technology

The invention relates to processes that efficiently convert carbon-containing materials, such as biomass, into products in such a manner that the energy, carbon, and mass content of the materials are efficiently transferred into such products. Such methods include converting the materials into at least one intermediate by a biological conversion process and at least one intermediate by a thermochemical conversion process and reacting the intermediates to form the product. Such methods have a chemical energy efficiency to produce the product that is greater than the chemical energy efficiency of a solely biological conversion process to produce the product and that is greater than the chemical energy efficiency of a process in which all of the material is initially subjected to a thermochemical conversion step as part of the process to produce the product.

The invention belongs to the technical field of a new chemical material, and in particular relates to a high-durability super-hydrophobic self-cleaning coating material and a preparation method thereof. The coating material of the invention is prepared by curing and drying nanoparticles with photo-catalytic activity, a low-surface-free-energy polymer and a cross-linking agent at the room temperature, wherein the low-surface-free-energy polymer consists of one or more of polysiloxane fluoride, dimethyl silicone polymer and polyphenylene methyl siloxane, which contain active groups, such as hydroxyl alkoxy group, carbon-carbon double bond, silanol group, siloxy group, and the like; the cross-linking agent is hydrogen-containing silicone oil or aminosilane; and the mass content of the photo-catalytic nanoparticles in the coating ranges from 10 to 60 percent. The coating is formed into a micro-nanostructure by nanoparticle self-organization; a super-hydrophobic self-cleaning coating with lotus effect is prepared from the coating and a cross-linked filming matrix with low surface energy; the persistence of a lotus-shaped super-hydrophobic characteristic of the coating is realized by using the photo-catalytic decomposition characteristic of an organic pollutant for the nanoparticles; and thus the material is suitable for large-area construction and has high weathering resistance andprominent self-cleaning characteristic.

The invention relates to preparation of a supported catalyst for 1,4-butynediol. The supported catalyst used is characterized in that a mesoporous molecular sieve is used as a carrier, and soluble copper salt and bismuth are loaded on the carrier by an impregnation method so that the mass content of copper in the catalyst is 15-30%, and the mass content of bismuth is 1-6%. In the prepared catalyst, the particle size of copper oxide is 10-80nm, and the bismuth oxide is amorphous powder; the copper oxide and the bismuth oxide are uniformly distributed on the carrier and interact with the carrier; and the catalyst has high activity and high selectivity in producing 1,4-butynediol through an alkyne hydroformylation reaction, is more stable and wear-resistant than similar catalysts, and saves copper resources.

This invention relates to a low noble metal mercury-free catalyst for a vinyl chloride synthesis reaction through an acetylene hydrochlorination reaction, a preparation method and an application thereof. The catalyst comprises an active carbon carrier and a mixed active component comprising one or a plurality of noble metal compounds and one or a plurality of general metal compounds according to a certain ratio, wherein the mass content of the noble metal is 0.01-0.04%, and the mass content of the general metal is 0.1-1%. The low noble metal mercury-free catalyst has characteristics of low noble metal content, low catalyst cost, high catalyst activity and long service life.

The invention discloses a method for separating a methyl acetate-methanol mixture by ionic liquid intermittent extractive rectification, which is realized in a way that: a rectifier of an extractive rectification tower is adopted, an ionic liquid 1-ethyl-3-methyl imidazolyl acetate is used as an extractant, and the operation is carried out intermittently, so the top of the extractive rectification tower sequentially produces a methyl acetate product of which the mass content is up to 98-99.9%, a methyl acetate-methanol transitional fraction and methanol of which the mass content is 97-99%; and finally, the extractant of which the mass percent is 99% is left in the heating kettle. The invention has the following advantages: the extractant is adopted to enhance the relative volatility of the methyl acetate-methanol system, the purity of the separated methyl acetate product is high, and the ionic liquid used as the extractant is easy to recover and does not pollute the environment; and only one single tower needs to be operated, so that operation is flexible and the equipment investment is low.

The invention relates to feed, in particular to feed for lean meat fattening pigs. The feed consists of a major material part and an auxiliary material part, wherein the mass content of the major material part is 98 percent, the mass content of the auxiliary material part is 2 percent, the major material part consists of the following ingredients in parts by weight: 300 to 500 parts of corn, 200 to 300 parts of wheat, 150 to 200 parts of dehulled soybean meal, 0 to 100 parts of American distillers dried grains with solubleb (DDGS), 0 to 50 parts of rice bran, 30 to 100 parts of wheat bran, 6 to 10 parts of mountain flour and 5 to 10 parts of calcium hydrophosphate, the auxiliary material part consists of the following ingredients in percentage by weight: 2 to 5 percent of choline, 1 percent of antioxidant, 3 percent of mould inhibitors, 2 percent of composite vitamins, 15 to 30 percent of synthetic amino acid, 20 to 30 percent of electrolyte, 15 percent of composite trace elements, 0.5 percent of phytase, 1 percent of composite zymin, 3 to 10 percent of meat modifiers and 5 to 30 percent of carriers. The feed for the lean meat fattening pigs provided by the invention has the advantages that 1) the growth speed and the lean meat percentage of the lean meat fattening pigs can be improved; 2) the pork quality can be improved, and in addition, no toxic residue exists; and 3) the heath of consumers is ensured, and the competitiveness of the pig product exportation is enhanced.

The invention relates to a method for preparing monohydric alcohol or dihydric alcohol through organic acid hydrogenation. According to the method, any one of acetic acid, propionic acid, valeric acid, stearic acid, oleic acid, palmitic acid, levulinic acid, lactic acid, succinic acid, 3-hydracrylic acid and other organic acids is taken as a reactant, and an A-B/X supported catalyst is adopted, wherein the component A is any one or more than two from Ir, Pt, Pd, Rh and Ru, the assistant B is any one or more than two from Mo, Re and W, the carrier X is any one in SiO2, activated carbon, titanium oxide, zirconium oxide, SiO2-Al2O3 (the mass content of Al2O3 accounts for 17 percent) and molecular sieves, the mass load amount of A in the catalyst is 0.5-10 percent, the molar ratio of the assistant B to A is 0.01-1.0, the reaction pressure is 2-20 MPa, and the reaction temperature is 40-180 DEG C. The catalyst has the characteristics of mild reaction conditions, high reaction activity and good selectivity, and a novel effective way for preparing monohydric alcohol or dihydric alcohol from biomass is provided.

The invention provides a cerium oxide polishing liquid suitable for polishing rock crystals, photomask quartz glass, semiconductor devices and glass-prepared hard disks and polishing low-dielectric-constant materials for interlayer insulating films of semiconductor devices of siloxane and the like. The polishing liquid contains surface modified nano cerium oxide, silicon dioxide, a dispersing agent, an oxidizing agent, an alkaline compound, an alcohol compound and water. Preferably, stearic acid treated nano cerium oxide is selected, the particle size is preferably 10-100 nm, and the mass content is 1-10%; preferably, the particle size of the colloidal silicon dioxide is 40-100 nm, and the mass content is 0.1-5%; preferably, the polishing liquid contains 0.01-5% of the high-molecular dispersing agent, 1-10% of the hydrogen peroxide oxidizing agent, and the balance an alcohol-water mixture, wherein the pH value of a slurry is 8-10. The nano cerium oxide polishing liquid selects the surface modified nano cerium oxide, has addition of a proper amount of the silicon dioxide, thereby reducing the grinding trigger time and improving the processing stability.

The invention discloses an ultra-supercritical novel ferrite heat-resistant steel welding electrode, consisting of an H08Cr9WMo special core wire and a coating, wherein the content of each of sulfur, phosphorous, arsenic, stannum and the like in the H08Cr9WMo special core wire is low; the coating is wrapped on the surface of the core wire; and the covering components and the mass contents thereof are as follows: 28-40% of marble, 18-28% of fluorite, 5-10% of rutile, 3-8% of ferrotitanium, 4-10% of silica powder, 2-5% of silicoferrite, 1-1.8% of ferrovanadium, 0.4-0.8% of ferrocolumbium, 1-1.8% of nickel powder, 0.4-0.8% of sodium carbonate, 0.4-0.8% of CMC (Carboxymethyl Cellulose), 0.2-0.6% of amorphous graphite powder, 0.6-1.5% of ferrochrome nitride and 1.5-3% of electrolytic manganese. The welding electrode provided by the invention is used for the welding of ultra-supercritical heat-resistant steel T/P92 in a matching way; and in the course of welding, the electric arc is stable, the splashing is little, the slag detachability is good, the all-position operability is good, the formed welding line is attractive and the welding line wettability is moderate.

The invention discloses a solvent-free polyurethane composition for synthetic leather. The composition consists of a component A and a component B, wherein the component A comprises polyetherester polyol, polyester polyol, a crosslinking agent, a chain extender, a foam stabilizer, a catalyst, a foaming agent and the like; the component B comprises polyol, micromolecule alcohol and isocyanate; the mass content of -NCO is 10%-25%. The component A and the component B are subjected to moment mixing through a low pressure foaming machine or a high pressure foaming machine, and then the mixture is sprayed or poured onto release paper coated with surface polyurethane resin, uniformly scraped to be 1-2 mm in thickness with a scraper, and fed to a baking channel to be heated till the resin is semi-solidified, the semi-solidified is laminated with base cloth to be fed to a rear passage oven for curing. The composition is low in viscosity, good in flowability after being sprayed or poured onto the release paper, easy for scraper coating, and high in strength after formation.

The invention discloses an iron-based diamond-impregnated bit for drilling in a hard slipping foundation. An iron-based substrate mixed material provided by the invention is formed by sintering an iron-based matrix and a diamond; the diamond is impregnated in the iron-based matrix; the volume percentage of the content of the diamond is 45-75%, and the grain size is 35-45mu; the iron-based matrix comprises the following components in percentage by mass: 65-72% of iron powder, 10-14% of zinc powder, 14-18% of 663 bronze powder, 1% of manganese powder and 2% of nickel powder; according to the invention, the iron powder with the mass content of about 70% is used for replacing the common tungsten carbide powder, and therefore, the cost of the diamond-impregnated bit is greatly reduced, the sintering temperature is reduced, and the heat damage rate of the diamond is reduced; the iron-based matrix is few in component, less in variable and easy to control; and the iron-based diamond-impregnated bit has higher pertinence and mainly aims to the hard slipping foundations.

The invention discloses a method for enrichment of vanadium from stone coal mines in a manner of low consumption and high efficiency The method comprises the steps of crushing the stone coal mines, grinding before flotation, first selecting coal and de-carboning to pick out carbon concentrate and then pick out vanadium concentrate, wherein grinding fineness of the stone coal mines is -200 meshes, mass content is more than 70% and mass concentration of flotation pulp is 35 to 45%; preparing water gas by a gas generator, with the carbon concentrate being a raw material; supplying heat by the heat generated from combustion of the water gas to the vanadium concentrate for vanadium leaching; and mixing residues from the combustion of the carbon concentrate for preparing the water gas with flotation vanadium concentrate to leach the vanadium. By utilizing the carbon concentrate from the flotation of original mines to generate the water gas for heat supplying, the method has the advantages of environment protection, low energy consumption, high recovery rate, etc.

The invention discloses a preparation method of a graphene/polyimide composite material. The preparation method adopts composite materials in percentage by weight and the processes, wherein the composite material comprises the following components in in percentage by weight: 80 to 99.99 percent of polyimide and 20 to 0.01 percent of Si-modified graphene; the preparation method particularly comprises the following steps: (1), preparing graphite oxide; (2), preparing Si-modified graphene: performing ultrasonographic treatment on the obtained graphite oxide powder in an aprotic organic solvent for 0.5 to 2 hours to obtain dispersion liquid with the concentration of 0.5 to 5mg/mL, adding an siloxane modification reagent into the dispersion liquid for reaction for 1 to 24 hours at a temperature of 30 to 180 DEG C, and performing washing and drying to obtain the powder of Si-modified graphene , wherein the mass content of Si is 2 to 13 percent;(3), preparing a precursor of Si-modified graphene/polyimide; (4), preparing the Si-modified graphene/polyimide composite material.

The invention discloses a warm-mixing recycled asphalt mixture preparation method which comprises the following steps: I, preparing a compound regenerant; II, preparing a compound warm-mixing agent; III, measuring the mass content and natural gradation of old asphalt in an RAP material and respectively determining mass ratios of novel aggregate and novel mineral powder which are required for preparing the warm-mixing recycled asphalt mixture to the RAP material; IV, preparing a warm-mixing recycled asphalt mixture sample and determining an optimum asphalt-aggregate ratio of the warm-mixing recycled asphalt mixture; V, under the condition of the optimum asphalt-aggregate ratio, preparing the warm-mixing recycled asphalt mixture. According to the invention, the recycling rate of the RAP material reaches 70% or above, meanwhile, secondary aging of the asphalt mixture is avoided, the advantages of energy saving and carbon emission and harmful gas emission reduction are realized and the warm-mixing recycled asphalt mixture prepared through the preparation method has good pavement performance.

The invention discloses a catalyst for preparing methyl glycolate through dimethyl oxalate hydrogenation and a synthetic method of the catalyst, belonging to the technical field of preparation of methyl glycolate catalysts. The catalyst is prepared by taking NaOH as a precipitator, wherein Cu is a main active ingredient of the catalyst, alkaline silica sol serves as a carrier, one or more base metals in Mn, Zr and Zn serve as aids, the mass content of metal copper is 10-40 percent, the content of the other base metal aids is 5-10 percent, and the carrier content is 60-80 percent. According to the catalyst, the preparation method is simple, raw materials are readily available, preparation repeatability is high, high reaction activity is achieved in a methyl glycolate preparation reaction through the dimethyl oxalate hydrogenation, and the catalyst stability and the selectivity of the methyl glycolate are high.

The invention relates to a bacillus subtilis preparation for preventing and controlling soil-borne diseases, as well as a preparation method thereof. The bacillus subtilis preparation is prepared by taking the thalli and metabolites of bacillus subtilis B579 with preservation number of CGMCC No.2270 as an effective active constituent which are matched with agriculturally acceptable carrier and a heat-resistant protective agent; the thalli content of the effective active constituent is 8 to 80 billion thalli per gram; and the mass content of the heat-resistant protective agent is 3 to 5 percent. The bacillus subtilis preparation can effectively prevent and control cucumber drooping diseases, cucumber wilt, eggplant root rot, eggplant damping-off, pepper blight, tomato basal stalk rot, grape botrytis cinerea and banana anthracnose. The bacillus subtilis preparation has a control efficiency more than 70 percent, has obvious effect of promoting plant growth, and is characterized in high efficiency, wide antimicrobial spectrum, simple use, low cost, no environmental pollution and improvement on the micro-ecological environment of soil.

The invention provides a magnesium-lithium alloy with an enhanced long-period structure phase and a preparation method thereof. The method adopts pure Mg, pure Li, pure Zn and Mg-Y intermediate alloy as raw materials and comprises the following steps of: proportionally putting the raw materials into a vacuum induction melting furnace, filling a protective gas, heating and smelting, and casting the smelted melt into a metal die to obtain an as-cast alloy; performing heat treatment at 490-510 DEG C for 5-10 hours to obtain a casting alloy with an LPSO structure phase through phase transformation; and performing extrusion deformation processing at 260-280 DEG C to obtain a magnesium-lithium alloy which comprises the following components in percentage by mass: 5.5-10% of Li, 4-10% of Y, 1-4% of Zn, less than 0.03% of inevitable impurities Fe, Cu, Ni and Si in total and the balance of Mg, wherein the mass content ratio of Y to Zn is 1-6. According to the invention, by reasonably selecting the alloy elements, the LPSO structure phase is introduced into a magnesium-lithium alloy substrate, and a magnesium-lithium alloy material with low density, high strength, high plasticity and good heat resistance is prepared.

Provided is an internal olefin sulfonate composition which is capable of exerting good foamability together with good volume of foam, foaming speed, foam dissipation property, foam quality, foam durability in the presence of sebum, and volume of foam in the presence of sebum at high levels, and a cleansing composition containing the same. The internal olefin sulfonate composition of the present invention comprises (A) an internal olefin sulfonate having 16 carbon atoms and (B) an internal olefin sulfonate having 18 carbon atoms, wherein a mass content ratio (A/B) of component (A) to component (B) is from 75/25 to 90/10, and wherein a mass ratio (hydroxy form/olefin form) of a content of a hydroxy form in the internal olefin sulfonate of the component (A) and the component (B) to a content of an olefin form in the internal olefin sulfonate of the component (A) and the component (B) is from 75/25 to 100/0.

The invention relates to a preparation method of a visible light catalyst with a surface plasmon effect and application thereof. The active component of the visible light catalyst is a precious metal Au, and the carrier is one of TiO2, CeO2, Nb2O5, SiO2, Ta2O5, Al2O3 and ZrO2, wherein, Au accounts for 0.2-5% in mass content, and the particle size of Au particle is 2-20nm. Preparation of the catalyst consists of two steps: the first step is to prepare a carrier; the second step is to prepare an Au/TiO2 (CeO2, SiO2, Al2O3, Nb2O5, Ta2O5, ZrO2) visible light catalyst with a plasmon effect througha sol precipitation method. Au nanoparticles prepared by the method of the invention have good dispersibility, easily controllable size, high active component utilization rate, as well as the effect of high efficiency photocatalytic degradation of organic pollutants by visible light.

The invention belongs to the technical field of food deep processing and particularly relates to a low sugar high dietary fiber composite fruit and vegetable paste and a preparation method thereof. Fruits and vegetables subjected to sugaring, acidity regulators, thickening agents, coloring matters and essence are subjected to scalding treatment, pulping, blending, concentrating, homogenizing, canning and sterilization to form the composite fruit and vegetable paste, the mass content of soluble solids is in a range from 26% to 31%, and the mass content of total sugar is in a range from 35.23% to 39.53%. According to the low sugar high dietary fiber composite fruit and vegetable paste and the preparation method thereof, the fruits and vegetables subjected to sugaring are used as main raw materials, the use ratio of the raw materials is improved, the production costs are lowered, types of jams are enriched, the preparation method is simple, the operation is simple, convenient and easy to control, the prepared composite fruit and vegetable paste has comprehensive nutritions, low sugar and high dietary fiber, health care and edible effects are integrated, the effect of balancing human nutrition can be achieved, simultaneously the taste is good, the low sugar high dietary fiber composite fruit and vegetable paste has low price and fine quality, the process is simple, the cost is low, the environment is not polluted, and the industrialized production is facilitated.