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JP02258610 |
PURPOSE: To obtain H2O2 at a good yield by bringing H2 and O2 into contact with each other under specific conditions in an acidic aq. medium on a catalyst consisting of group VII metals. CONSTITUTION: The catalyst consisting of at least ...
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JP02227139 |
PURPOSE: To improve catalyst activity of denitrification catalysts in a low temperature region by impregnating ceramics papers with silica sol and drying them in advance, then impregnating said papers with titania sol and drying them, an...
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JP02218438 |
PURPOSE: To provide a gaseous emission cleanup catalyst excellent in low temp. activity by forming a mixed layer of Pd and Rh carrying alumina on the surface of a honeycomb structure using the inexpensive Pd instead of Pt. CONSTITUTION: ...
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JP02198637 |
PURPOSE: To obtain the catalyst which has excellent heat resistance and effectively cleans the harmful components in exhaust gases by incorporating cerium dioxide and barium stannate into a catalyst component-contg. coating layer or othe...
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JP02194842 |
PURPOSE: To enhance peeling resistance of catalytic metal by providing a high- density coated oxide layer contg. oxide-based ceramics on the surface of a base material made of metal and providing a low-density coated activated alumina la...
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JP02009448 |
PURPOSE: To obtain a catalyst which can be conserved stably and cured quickly if heated by allowing a platinum-group catalyst not to exist in the surface section of a granule consisting of diorganopolysilane with a softening point which ...
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JP02006819 |
PURPOSE: To increase the durability of a denitrification catalyst contg. the oxides of Ti and Mo and/or V by previously bringing the catalyst into contact with SO2 and/or SO3 at 300-400°C. CONSTITUTION: A catalyst contg. the oxides of T...
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JP02004449 |
PURPOSE: To enable the use of a cobalt catalyst as a fixed bed by adding an aq. alkali carbonate soln. to a cobalt salt soln., settling cobalt carbonate at 20 to 95°C and filtering and washing the same, then reducing the cobalt carbonat...
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JP01317544 |
PURPOSE: To produce a hydrogenation catalyst having a water content of <1 wt.% by putting catalyst mud together with water under an inert gas into a vacuum mixer and adding and mixing a meltable org. dispersion medium to and with this mu...
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JP01284580 |
PURPOSE: To obtain the title passivating agent useful in catalytic cracking of a hydrocarbon and improved in storage stability, ease of manufacturing, and Sb content by reacting Sb2O3 with acetic anhydride and then with a specified aliph...
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JP01258742 |
PURPOSE: To enhance the resistivity to metal poisoning by incorporating components effective for capturing metals existing in feedstock to be subjected to catalytic cracking into the surface coating of large pore zeolite, thereby forming...
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JP01231941 |
PURPOSE: To prevent the deterioration of a catalyst in the atm. contg. moisture by coating catalyst particles with a protective film which consists of a material impermeable to gas and water and insoluble in a catalyst component and is c...
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JP01228543 |
PURPOSE: To improve the activity and selectivity of a catalyst and the reaction yield and condition thereof, by forming the catalyst by performing cleaning with an aqueous ammonia having a pH value of not less than 10 after depositing ac...
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JP01192710 |
PURPOSE: To obtain hydrogen peroxide in high efficiency by reaction between H2 and O2 in a specific solvent in the presence of a catalyst with a metal carried on a hydrophobic carrier to enable direct reaction between the H2 and O2. CONS...
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JP01168321 |
PURPOSE: To maintain catalytic activity for a long time by providing a molded protective layer consisting of calcium silicate having narrow pore volume not smaller than 2.0ml/g and mean narrow pore diameter not smaller than 400 in front ...
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JP01133909 |
PURPOSE: To much more efficiently produce hydrogen peroxide as compared with a method using a conventional catalyst obtd. by supporting a Pt family metal on a hydrophilic carrier and to increase the concn. of accumulated hydrogen peroxid...
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JP01121232 |
PURPOSE: To obtain the title compound, which is used as a functional solvent or an intermediate of a variety of medicines and agrochemicals, in high yield without side reactions at low costs, by allowing an olefin to react with an aldehy...
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JP01111448 |
PURPOSE: To prevent a lowering of catalyst activity by preserving a transition metal catalyst, prepared by having an Mg compound support a Ti compound, as a slurry in a hydrocarbon solvent containing a specified amount of a chlorinated e...
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JP01111449 |
PURPOSE: To prevent a lowering of catalyst activity by preserving a transition metal catalyst, prepared by having an Mg compound support a Ti compound, as a slurry in a hydrocarbon solvent containing a specified amount of a conjugated vi...
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JP01015127 |
PURPOSE: To prevent a catalyst from oxidation and poisoning, and to improve the safety and efficiency of discharging work of the catalyst by diffusing a mixture of a condensed ring aromatic hydrocabon with gas oil onto a catalyst at a te...
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JP63252531 |
PURPOSE: To minimize being poisoned by SOX of denitration catalyst by adding one kind or more of Fe compound, V compound and W compound in the powdery state of given average particle diameter into heavy oil or pulverized coal fuel to be ...
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JP63230504 |
PURPOSE: To maintain high activity of a catalyst for a long period, by using a reactor having a catalyst contact part therein coated with a specific material in reacting hydrogen chloride with oxygen in the presence of chromium oxide cat...
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JP63044945 |
PURPOSE: To reduce the danger of ignition at the mixing time of a catalyst and a solvent, by preliminarily adding a small amount of water to the catalyst to wet the same and adding a water-soluble org. solvent to the wetted catalyst to m...
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JP63007846 |
PURPOSE: To prevent the adhesion of the solid component in exhaust gas and to enhance catalytic durability, by forming a coating layer having micropores communicating with the surface of a denitration catalyst but substantially having no...
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JP62163747 |
PURPOSE: To make mechanical strength of a catalyst large and to reduce breakage in a period for assembling the catalyst by impregnating a soln. contg. a catalytic metallic component into fibrous ceramic and calcining it at high temp. and...
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JP62071537 |
PURPOSE: To obtain a catalyst having good cleaning up performance by forming a coating layer contg. a large amt. of an oxygen storage capability lending agent (OSC agent) atop a catalyst layer contg. a catalyst component consisting of a ...
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JP62071536 |
PURPOSE: To obtain a catalyst having excellent oxidation performance and heat resistance for cleaning up of an exhaust gas by providing a coating layer contg. a large amt. of an oxygen storage capability lending agent (OSC agent) and sli...
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JP62053743 |
PURPOSE: To enhance conversion efficiency under a wet condition, by forming a hydrophobic polymer by performing polymerization of the monomer of the hydrophobic polymer through the contact with activated carbon and supporting platinum by...
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JP62038245 |
PURPOSE: To enhance the activity of the catalytic component in fine pores, by supporting a catalytic component or enzymes by the wall surfaces of the fine pores of a water repellent porous carrier comprising a plate shaped, film like, tu...
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JP62030554 |
PURPOSE: To enable long-term use and to facilitate reutilization, by forming continuous fine pores in a plate shaped, film like, pipe shaped or pellet shaped water repellent porous body and supporting a catalytically active component by ...
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JP62004446 |
PURPOSE: To obtain the titled hydrophobic catalyst carrier especially suitable for a water-hydrogen isotope exchange reaction by coating the crystalline surface of a porous silicon carbide sintered body having specified pore volume and s...
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JP61188401 |
PURPOSE: To prevent the catalytic performance of a slurry formed by dispersing a catalyst, obtained by allowing a Mg compound-containing carrier to support a titanium halide, in a hydrocarbon medium from decreasing during storage, by sto...
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JP61185339 |
PURPOSE: To provide the unsupported part of a catalytic metal with good accuracy, by immersing a monolithic catalyst carrier coated with activated alumina in an aqueous solution of a photocurable resin to coat the wall surfaces of all ce...
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JP61074650 |
PURPOSE: To prevent the clogging in fine pores with catalyst poison by depositing a catalyst covered with a coating layer on the wall surface forming the fine pore of a monolithic catalyst carrier wherein many fine pores having a gas inf...
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JP61038631 |
PURPOSE: To prevent the deterioration in activity and changes with time of the titled catalyst by allowing aromatic hydroperoxide and/or aromatic peroxide to react catalytically with hydrogen under the presence of a catalyst or a catalyt...
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JP61028459 |
PURPOSE: To perform safe and economical replacement, in withdrawing the catalyst used in the reaction of hydrocarbons in a chemical plant, by primarily wetting the catalyst with mineral oil at first before secondarily wetting the same wi...
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JP60248237 |
PURPOSE: To obtain molded catalyst having high mechanical strength in spite of used small amt. of molding additive, contg. many pores and having high activity by molding a compsn. for the materials of the catalyst prepd. by mixing an ino...
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JP60094144 |
PURPOSE: To stabilize thermally a structure of narrow pore of a porous particle by adhering 0.1W1g/cm3 coke per narrow-pore volume to the inside of a narrow- pore of an inorganic porous particle having ≥0.3cm3/g narrow-pore volume and ...
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JP60087857 |
PURPOSE: To obtain a catalyst having high activity at low cost by allowing a carrier having the maximum value of the pore distribution ratio in the range 100W500 pore diameter to carry palladium. CONSTITUTION: Palladium is carried on a c...
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JP60078644 |
PURPOSE: To prepare a catalyst having high anti-wear property and high denirating capacity, by adding a viscosity control agent to a binder solution comprising a silica sol to enhance the viscosity thereof while impregnating a carrier mo...
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JP60005230 |
PURPOSE: To provide a catalyst capable of effectively treat combustion exhaust gas over a long period of time, obtained by forming a coating layer comprising heat stable oxide to the surface of a catalyst layer supported by a carrier. CO...
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JP59225741 |
PURPOSE: To enhance the activity of a water repellent catalyst useful in reaction between gas-liquid phases to a large extent, by supporting a fine particle of a noble metal protected by a high-molecular polymer by a carrier comprising a...
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JP59211973 |
PURPOSE: To prevent deterioration due to water by providing a water-repellent film on the surface of a catalyst used as a catalyst plug to simplify the water supply of a lead storage battery. CONSTITUTION: After a catalyst is immersed fo...
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JP59179158 |
PURPOSE: To produce easily a catalyst for test by packing successively catalysts, which are obtd. by absorbing successively the liquid contg. ≥1 kind of effective components in granular carriers supplied at a constant rate on an endles...
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JP59179157 |
PURPOSE: To suppress poisoning of a catalyst activator and to extend its life by coating a solid acidic material consisting of 10W90wt% SiO2 and 10W90wt% Al2O3 or 10W90wt% SiO2 and 10W90wt% ZrO2 on the surface of a catalyst. CONSTITUTION...
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JP59177140 |
PURPOSE: To prepare a hydrophobic catalyst having high activity and free from the lowering of activity, by precipitating catalytic metal particles each coated with a surfactant on the surface of a hydrophobic carrier while subjecting the...
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JP59139939 |
PURPOSE: To provide the titled catalyst enhanced in lead poisening resistance durability, obtained by allowing a catalyst carrier having a layer containing a lead- containing perovskite type compound provided to the surface thereof to su...
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JP59069150 |
PURPOSE: To provide a titled catalyst which prevents poisoning of catalytically active noble metals with lead and can maintain high purifying performance for a long period of time by the constitution wherein the surface of a carrier laye...
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JP59030805 |
PURPOSE: To prevent the deterioration in the catalytic ability of the titled catalytic component, by storing the solid catalytic component for polymerizing an α-olefin consisting of magnesium, titanium, a halogen and an electron donor i...
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JP58210858 |
PURPOSE: To develop a catalyst carrier consisting of a vinyl polymer coated graphite fluoride having excellent moldability and supporting property for catalyst components, by mixing an org. solvent or a surface active agent and graphite ...
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