38results about How to "Avoid catalysis" patented technology

Porous ceramic catalyst supports are pre-coated with a passivation layer prior to applying a catalyst or catalyst support coating, the passivation layer consisting of a coating of a liquid mixture comprising at least one coating material selected from the group of polyvinyl alcohol / vinyl amine copolymer, polyvinyl alcohol / vinyl formamide copolymer, and gelatin.

Disclosed is a catalyst support for steam carbon dioxide reforming reaction utilizing the advantages of superior thermal conductivity and thermal dispersion of a metal foam support and a large specific surface area of a carrier material, which allows selective control of coating amount and the thickness of a support layer and prevents cracking on the support surface, using both the sol-gel method and the slurry method that have been used for coating of a metal foam support.

The present invention discloses a repairing type lubricating oil additive and its preparation method. Its composition includes 1-10% of aluminium, titanium, zinc and tin granules whose grain size is 10-200 nm, their weight ratio of 5.5-6.5:1.5-2.5:0.5-1.5:0.5-1.5, 88-98% of basis oil for finished product lubricating oil and 1-2% of dispersing additive. Its preparation method incldues the following steps: placing the above-mentioned all the materials into same container, mechanically-stirring and mixing for 20-40 min., placing the mixture and said container into an ultrasonic oscillator to make ultrasonic oscillation for 20-40 min. so as to obtain the invented lubricating oil additive with good repairing effects.

Disclosed is a process for producing unsaturated aldehydes and / or unsaturated acids from olefins or alkanes in a fixed bed shell-and-tube heat exchanger-type reactor by catalytic vapor phase oxidation. A heat exchanger-type reactor for use in such a process is also disclosed. The process utilizes at least one first-step reaction zone and a second-step reaction zone that is divided into two or more shell spaces by at least one partition. The process may be applied to a single-step process for producing unsaturated acids from alkanes or alkenes.

The invention discloses a production system and method for methylallyl alcohol. The production system is characterized by comprising a reactive distillation tower, an acetone product tower, an isopropanol recovery tower, a methylallyl alcohol light-component removing tower, a methylallyl alcohol product tower, a molecular sieve dehydration tower, a falling-film evaporator and a film evaporator. The refining method comprises the following steps: feeding each raw material into the reactive distillation tower, conveying a gas phase generated after a reaction into an acetone separation tower, and conveying a liquid phase to the falling-film evaporator; conveying a gas phase obtained after separation by the acetone separation tower into the acetone product tower, and returning a material at the bottom of the acetone separation tower to the reactive distillation tower; collecting acetone at the top of the acetone product tower, and conveying a material at the bottom of the acetone product tower to the isopropanol recovery tower; returning circulating acetone obtained at the top of the isopropanol recovery tower to the reactive distillation tower for participation in the reaction, and conveying a material obtained at the bottom of the isopropanol recovery tower to the methylallyl alcohol light-component removing tower; returning light components obtained at the top of the methylallyl alcohol light-component removing tower to the isopropanol recovery tower, and conveying a material obtained at the bottom of the methylallyl alcohol light-component removing tower to the methylallyl alcohol product tower; and collecting a methylallyl alcohol product from the top of the methylallyl alcohol product tower. The production system and method provided by the invention have the advantage of high conversion efficiency and high product purity.

The present invention provides a method of manufacturing a semiconductor device. The method includes the steps of forming a first interlayer insulating film over a silicon substrate; forming a first conductive film on the first interlayer insulating film; forming a first ferroelectric film, which is crystallized, on the first conductive film; annealing the first ferroelectric film; after the annealing, forming, on the first ferroelectric film, a second ferroelectric film made of an amorphous material or a microcrystalline material; forming a second conductive film on the second ferroelectric film; and forming a capacitor by patterning the first and second conductive films and the first and second ferroelectric films.

Disclosed is a catalyst support for steam carbon dioxide reforming reaction utilizing the advantages of superior thermal conductivity and thermal dispersion of a metal foam support and a large specific surface area of a carrier material, which allows selective control of coating amount and the thickness of a support layer and prevents cracking on the support surface, using both the sol-gel method and the slurry method that have been used for coating of a metal foam support.

The invention discloses a method for initiating polymerization of an epoxy monomer by using graphene oxide as an initiator. The method comprises the following steps: the epoxy monomer and the graphene oxide are added to a reaction system, wherein, the mass rate of the epoxy monomer to the graphene oxide is 300-5, the graphene oxide can prompt the epoxy monomer to undergo cationic ring-opening polymerization at the temperature of 0-100 DEG C, and the obtained epoxy polymer can be grafted in situ on the surface of a graphene oxide sheet layer, so that surface modification of the graphene oxide is realized, and cation-initiated polymerization and grafting amount are controlled by reaction time and reaction temperature.

The present invention discloses a repairing type lubricating oil additive and its preparation method. Its composition includes 1-10% of aluminium, titanium, zinc and tin granules whose grain size is 10-200 nm, their weight ratio of 5.5-6.5:1.5-2.5:0.5-1.5:0.5-1.5, 88-98% of basis oil for finished product lubricating oil and 1-2% of dispersing additive. Its preparation method incldues the following steps: placing the above-mentioned all the materials into same container, mechanically-stirring and mixing for 20-40 min., placing the mixture and said container into an ultrasonic oscillator to make ultrasonic oscillation for 20-40 min. so as to obtain the invented lubricating oil additive with good repairing effects.

The invention provides a stable pantoprazole sodium medicinal composition. The composition comprises the following components in parts by weight: 10 parts of pantoprazole sodium, 0.05-0.6 part of basic amino acid, 0.5-2.0 parts of antioxidant, 0.05-0.6 part of chelating agent, and 1.2-8.0 parts of pH regulating agent. The invention also provides a preparation containing the medicinal composition, a pellet containing the medicinal composition, a preparation containing the pellet and a preparation method of the pellet. According to the medicinal composition, the stability of pantoprazole sodium can be remarkably improved in the preparing process and the storing process.

The invention is a kind of field transmitting negative electrode which has an affluxion electrode. The invention is a structure for carbon nano pipe field transmitting negative electrode manufactured with screen printing method, the structure can reduces the resistance of the electrode, and upgrades the uniformity of the negative potential. It includes a transparent conductive electrode on the glass base, an affluxion electrode and the negative electrode on the transparent conductive electrode, the affluxion electrode is narrower than the transparent conductive electrode. The negative and the affluxion electrode are arranged on the transparent conductive electrode, the affluxion electrode also can be set at one side of the negative electrode or in the middle of the negative electrode. The negative electrode 4 also can be produced on the transparent conductive electrode and covers on the affluxion electrode. The technology can reduce the electrode resistance, avoids the catalyst effect to the negative electrode oxidization caused by the electrode broken circuit and the metal in the process of baking, and upgrades the reliability of the device.

The invention discloses an anti-aging polyester composite material and a preparation method thereof, and belongs to the field of material science. The composite material disclosed by the invention isprepared from the following raw materials in parts by weight: 75 to 85 parts of polyester, 15 to 25 parts of epoxide elastomer copolymer, 0.5 to 5 parts of reactive elastomer macromolecule modified nanoparticles, and 0.01 to 5 parts of a functional aid. The polyester is at least one of polyethylene glycol terephthalate and polybutylene terephthalate; the epoxide elastomer copolymer comprises at least one of vinyl acetate copolymer and ethylene-acrylate copolymer, and at least contains a glycidyl methacrylate structural unit, wherein the mass percentage content of the glycidyl methacrylate is 0.5 to 10 percent; the reactive elastomer macromolecules are the epoxide elastomer copolymer. The material disclosed by the invention is high in toughness, high in strength, excellent in anti-ultraviolet anti-aging performance, and can be applied to the fields of polyester fibres, plastic package, electric appliance outer shell, automobile industry and instruments and apparatuses.

The invention relates to the technical field of stabilizers for plastic pipelines, and discloses a method for preparing a compound calcium and zinc stabilizer for a plastic pipeline. The method comprises the following steps that (1) the raw materials are weighed and taken in parts by weight: 15 to 30 parts of calcium stearate, 15 to 30 parts of zinc stearate, 10 to 15 parts of modified montmorillonite, 3 to 5 parts of a butyl stearate lubricant, 0.5 to 1 part of an antioxidant, and 0.5 to 1 part of an ultraviolet light absorber; (2) the calcium stearate, the zinc stearate, and butyl stearate are added into a homogenizer to be uniformly stirred at 50 to 60 DEG C to obtain a premix; and (3) the modified montmorillonite, the antioxidant, and the ultraviolet light absorber are added into the premix to be uniformly stirred at 45 to 50 DEG C, and the compound calcium and zinc stabilizer is obtained. The prepared compound calcium and zinc stabilizer is environmentally friendly, and the heat resistance performance of a polyvinyl chloride pipeline can be significantly improved.

The invention relates to an iron removing process for flax roving and belongs to the technical field of flax processing. The iron removing process includes: iron ion removing is performed on the flax roving to remove iron ions in hemp fibers, then normal degumming and bleaching are performed on the roving, and finally the roving is washed. The iron removing process has the advantages that the iron removing is performed before the oxygen bleaching, hydrogen peroxide is prevented from being catalyzed by iron, the strength of the roving is increased effectively, the reaction during the oxygen bleaching is stable and even, and damage to fibers is small.

The present invention discloses an intermittently opened cracking crude oil apparatus comprising a high pressure container (1), a support post (2) and a gold sleeve (3). A sealed reaction chamber of natural gas (4) is formed between an exterior surface of the support post and an interior surface of the gold sleeve, and a sealed high pressure chamber (5) is formed between an interior surface of the high pressure container and an exterior surface of the gold sleeve. A gas outlet is provided in the support post and communicates the reaction chamber of natural gas, the gas outlet communicating a gas conduit (7), the gas conduit being connected to a natural gas collector (8). A movable valve needle (9) is provided on the gas outlet to control open and close of the gas outlet. A liquid inlet (10) is provided on the high pressure container and communicates the high pressure chamber, the liquid inlet communicating a liquid conduit (11) which communicates a high pressure liquid supply. A heater (12) and a nozzle of liquid nitrogen (13) are provided outside the high pressure container. A thermocouple (14) is provided on the high pressure container, the thermocouple being connected to a temperature control (15) which can control operating conditions of the heater and the nozzle of liquid nitrogen.

An engine system includes an engine that, a fuel supply device, and an electronic control unit. The electronic control unit is configured to control the fuel supply device and to perform operation control of the engine by adjusting an injection ratio between fuel injection from an in-cylinder injection valve and a port injection valve according to the operation state of the engine. The electronic control unit is configured to perform imbalance determination. The electronic control unit is configured to change a region of fuel injection from a first fuel injection region to a second fuel injection region when the electronic control unit determines that a lean imbalance is occurred with respect to the fuel injection in which the fuel injection from the port injection valve is performed.

The invention discloses high-efficiency antirust grease and a preparation method thereof. The grease comprises the raw materials of, by weight: 20-40 parts of base oil A, 40-60 parts of base oil B, 4-6 parts of octadecylamine, 3-4 parts of diphenylmethane diisocyanate, 0.5-2 parts of hexamethylenediamine, 1-3 parts of an antioxidant , 2-4 parts of an antirust agent A, and 3-5 parts of an antirust agent B. The preparation method is that: the raw materials are added according to a certain ratio under an appropriate temperature, and mixing and blending is carried out. The antirust grease provided by the invention has excellent high-temperature resistance, high-humidity resistance, salt-spray resistance, and atmospheric corrosion resistance. The grease has good antirust effect for black and non-ferrous metals. The grease is mainly used in long-term storage and antirust of metal products such as bearings, machine tools, machine tool accessories, auto parts, hardware tools, machinery, ordnance, and the like.