摘要:
A process for removing nitrogen oxide from exhaust is disclosed, comprising contacting exhaust containing nitrogen oxide with an alumina catalyst which contains not more than 0.5% by weight of an alkali metal and/or an alkaline earth metal and has a total pore volume of from 0.48 to 1.2 cm.sup.3 .multidot.g.sup.-1 with 0.26 to 0.6 cm.sup.3 .multidot.g.sup.-1 of the total pore volume being formed of pores of not greater than 80 .ANG. or has a volume of pores formed of pores of not greater than 60 .ANG. of from 0.06 to 0.2 cm.sup.3 .multidot.g.sup.-l and which may have supported thereon tin in an oxidative atmosphere containing excess oxygen in the presence of a hydrocarbon or an oxygen-containing organic compound.
摘要:
A reduction purification method of a nitrogen oxide-containing exhaust gas by contacting said nitrogen oxide-containing exhaust gas with a catalyst in an oxidative atmosphere in which an excess amount of oxygen is present and in the presence of a least one reducing agent selected from the group consisting of a hydrocarbon and an oxygen-containing organic compound, wherein said catalyst comprises an alumina having supported thereon (a) tin and (b) at least one selected from the group consisting of ruthenium, palladium, rhodium and indium.
摘要:
A reduction purification method of a nitrogen oxide-containing exhaust gas by contacting said nitrogen oxide-containing exhaust gas with a catalyst in an oxidative atmosphere in which an excess amount of oxygen is present and in the presence of at least one reducing agent selected from the group consisting of a hydrocarbon and an oxygen-containing organic compound, wherein said catalyst comprises an alumina having supported thereon (a) tin and (b) at least one selected from the group consisting of ruthenium, palladium, rhodium and indium.
摘要:
A process for producing hydrocarbons which comprises bringing a gas mixture comprising hydrogen and carbon monoxide into contact with a catalyst comprising manganese oxide, alkali metal, sulfur, and ruthenium to produce hydrocarbons. The hydrocarbons formed are rich in olefins. When a catalyst prepared by combining the above described catalyst with crystalline zeolite is used, the hydrocarbons formed becomes rich in liquid hydrocarbons, particularly, a gasoline fraction.
摘要:
A catalyst composition for the hydrotreatment of hydrocarbon oils is disclosed. The composition comprises at least one metal compound having hydrogenating activity belonging to a Group VIB or Group VIII carried on a carrier comprising 2-35% by weight of zeolite and 98-65% by weight of alumina or an alumina-containing substance, wherein, (A) said alumina or alumina-containing substance (1) has a mean pore diameter of 60-125 angstrom and (2) contains the pore volume of which the diameter falls within .+-.10 angstrom of the mean pore diameter of 70-98% of the total pore volume, (B) said zeolite (3) has a mean particle size of 6 .mu.m or smaller and (4) contains particles of which the diameter is 6 .mu.m or smaller of 70-98% of all zeolite particles. It has both high hydrodesulfurization and high cracking capabilities at the same time, and can selectively crack the heavy fractions which have once been hydrotreated, yielding lighter fractions.
摘要:
A catalyst composition for the hydrogenation of heavy hydrocarbon oil, where the catalyst composition comprises at least one active ingredient for hydrogenation supported on a porous alumina carrier and has the following characteristics: (1) the total volume of the pores therein is from 0.4 to 1.0 ml/g; (2) the mean pore diameter of pores having a pore diameter of from 5 to 400 .ANG. is from 60 to 140 .ANG.; (3) the volume of pores having a pore size within .+-.25% of the mean pore diameter of pores having a pore diameter of from 5 to 400 .ANG. is from 60 to 98% of the volume of pores having a pore diameter of from 5 to 400 .ANG.; (4) the volume of pores having a pore diameter of from 400 to 5000 .ANG. is from 2 to 9% of the total volume of the entire pores; (5) the ratio (mm.sup.2 /mm.sup.3) of the outer surface area of a molded catalyst powder to the volume thereof is from 4 to 8; and (6) all points in the interior of the molded catalyst particle are positioned within 0.05 to 0.6 mm from the outer surface thereof. A process for producing the catalyst composition is also disclosed. Further, a process for hydrogenating heavy hydrocarbon oil, which comprises contacting the heavy hydrocarbon oil with the catalyst composition in the presence of hydrogen is disclosed.
摘要:
A catalyst composition for the hydrogenation of heavy hydrocarbon oil comprising at least one active ingredient for hydrogenation supported on a porous refractory oxide carrier and which has the following characteristics:(1) the mean pore diameter of the pores thereof is in the range of 130 to 250 .ANG.;(2) the volume of pores having a pore diameter within .+-.30 .ANG. of the mean pore diameter is in the range of from not less than 30% to less than 60% of the total volume of the pores;(3) the volume of pores having a pore diameter of not larger than 80 .ANG. is not more than 13% of the total volume of the pores;(4) the volume of pores having a pore diameter of not smaller than 350 .ANG. is not more than 25% of the total volume of the pores; and(5) the ratio (mm.sup.2 /mm.sup.3) of the outer surface of a molded catalyst particle to the volume thereof is in the range of 3 to 8. There are also disclosed a process for producing the catalyst composition and a process for hydrogenating heavy hydrocarbon oil, the latter of which comprise contacting heavy hydrocarbon oil with the catalyst composition in the presence of hydrogen.
摘要:
Disclosed is a sustained-release preparation which is prepared by shaping a granule comprising a blood coagulation factor Xa inhibitor and a mixture of at least two hydrophilic polymers. Also disclosed is a pharmaceutical composition comprising a combination of the sustained-release preparation and an immediate release preparation comprising a blood coagulation factor Xa inhibitor. It becomes possible to provide a controlled release preparation comprising a blood coagulation factor Xa inhibitor for the prevention or treatment of thrombosis, which can control the activity of blood coagulation factor Xa for a long term and is excellent in convenience and compliance. It is also becomes possible to provide a method for producing the controlled release preparation.
摘要:
The solid preparation of the present invention aims at providing a solid preparation superior in the stability during production and preservation even when a poorly water-soluble substance having a low melting point is contained in a large amount, and also superior in the disintegration property and release property of a poorly water-soluble substance having a low melting point, after oral administration, and is characterized by the following 1) to 3): 1) containing a poorly water-soluble substance having a low melting point, a saccharide, and a cellulose selected from a crystalline cellulose and a low-substituted hydroxypropylcellulose, 2) a saccharide/cellulose weight ratio exceeding 2, and 3) a cellulose content of not less than 5 wt %.
摘要:
D-mannitol having a specific surface area of not less than about 1 m2/g is disclosed. The D-mannitol shows improved compressibility and is useful as an excipient.