Abstract: The present invention provides a hydrodesulfurization catalyst that exhibits a high desulfurization activity when used in hydrotreatment of hydrocarbon oil, in particular straight-run gas oil. The catalyst includes at least one type of metal component selected from Groups VIA and VIII in the periodic table, supported on a silica-titania-alumina support where the total of the diffraction peak area indicating the crystal structure of anatase titania (101) planes and the diffraction peak area indicating the crystal structure of rutile titania (110) planes is ¼ or less of the diffraction peak area indicating the aluminum crystal structure ascribed to ?-alumina (400) planes, as measured by X-ray diffraction analysis. The catalyst has (a) a specific surface area (SA) of 150 m2/g or greater, (b) a total pore volume (PVo) of 0.

Abstract: A hydrotreating catalyst that exhibits excellent levels of both desulfurization activity and denitrification activity. The hydrotreating catalyst is prepared by supporting molybdenum, cobalt and nickel on a carrier comprising aluminum, silicon, phosphorus and boron, and then performing a presulfiding treatment, and has an average stacking number for molybdenum sulfide slab that is greater than 1.0 but not more than 1.9. Also, a process for producing a hydrotreating catalyst that enables a hydrotreating catalyst having excellent levels of both desulfurization activity and denitrification activity to be produced with comparative ease. The process includes a first step of mixing an acidic aluminum salt aqueous solution and a basic aluminum salt aqueous solution in the presence of phosphate ions and silicate ions to achieve a pH of 6.5 to 9.

Abstract: The present invention provides a hydrodesulfurization catalyst that exhibits a high desulfurization activity when used in hydrotreatment of hydrocarbon oil, in particular straight-run gas oil. The catalyst includes at least one type of metal component selected from Groups VIA and VIII in the periodic table, supported on a silica-titania-alumina support where the total of the diffraction peak area indicating the crystal structure of anatase titania (101) planes and the diffraction peak area indicating the crystal structure of rutile titania (110) planes is ¼ or less of the diffraction peak area indicating the aluminum crystal structure ascribed to ?-alumina (400) planes, as measured by X-ray diffraction analysis. The catalyst has (a) a specific surface area (SA) of 150 m2/g or greater, (b) a total pore volume (PVo) of 0.

Abstract: A hydrotreating catalyst that exhibits excellent levels of both desulfurization activity and denitrification activity. The hydrotreating catalyst is prepared by supporting molybdenum, cobalt and nickel on a carrier comprising aluminum, silicon, phosphorus and boron, and then performing a presulfiding treatment, and has an average stacking number for molybdenum sulfide slab that is greater than 1.0 but not more than 1.9. Also, a process for producing a hydrotreating catalyst that enables a hydrotreating catalyst having excellent levels of both desulfurization activity and denitrification activity to be produced with comparative ease. The process includes a first step of mixing an acidic aluminum salt aqueous solution and a basic aluminum salt aqueous solution in the presence of phosphate ions and silicate ions to achieve a pH of 6.5 to 9.

Abstract: When a heavy fuel oil with a sulfur content of 1 percent by mass or lower is produced from a feedstock consisting of a heavy hydrocarbon oil derived from a heavy crude oil having an API degree of 30 or less and containing sulfur and metal components in amounts larger than those of ordinary crude oil, the conventional processes requires higher reaction temperature and was accompanied with a remarkably enhanced deactivation rate of the catalyst which results in a remarkable shortened lifetime thereof. Therefore, it is regarded as substantially impossible to treat the feedstock.

Abstract: When a heavy fuel oil with a sulfur content of 1 percent by mass or lower is produced from a feedstock consisting of a heavy hydrocarbon oil derived from a heavy crude oil having an API degree of 30 or less and containing sulfur and metal components in amounts larger than those of ordinary crude oil, the conventional processes requires higher reaction temperature and was accompanied with a remarkably enhanced deactivation rate of the catalyst which results in a remarkable shortened lifetime thereof. Therefore, it is regarded as substantially impossible to treat the feedstock.

Abstract: A ceramic electronic component includes two or more electrodes 5 and 6 spaced at a predetermined distance from each other, between which a potential difference is produced in operation and a void 9 that penetrates to the outside is provided. In the void 9, a water repellent film 10 is formed. This prevents water vapor from being absorbed in the void 9 connecting the electrodes 5 and 6, and thereby preventing the formation of a conductive path and the occurrence of ion migration.

Abstract: A ceramic electronic component includes two or more electrodes 5 and 6 spaced at a predetermined distance from each other, between which a potential difference is produced in operation and a void 9 that penetrates to the outside is provided. In the void 9, a water repellent film 10 is formed. This prevents water vapor from being absorbed in the void 9 connecting the electrodes 5 and 6, and thereby preventing the formation of a conductive path and the occurrence of ion migration.

Abstract: A ceramic electronic component includes two or more electrodes 5 and 6 spaced at a predetermined distance from each other, between which a potential difference is produced in operation and a void 9 that penetrates to the outside is provided. In the void 9, a water repellent film 10 is formed. This prevents water vapor from being absorbed in the void 9 connecting the electrodes 5 and 6, and thereby preventing the formation of a conductive path and the occurrence of ion migration.

Abstract: A ceramic electronic component includes two or more electrodes 5 and 6 spaced at a predetermined distance from each other, between which a potential difference is produced in operation and a void 9 that penetrates to the outside is provided. In the void 9, a water repellent film 10 is formed. This prevents water vapor from being absorbed in the void 9 connecting the electrodes 5 and 6, and thereby preventing the formation of a conductive path and the occurrence of ion migration.

Abstract: A test pattern generator for automatically generating a test pattern for detecting a stack fault of a large scale integrated circuit an LSI with a tester includes a loop/path disconnecting section for disconnecting a loop portion of the LSI at a position where a fault detection rate is not lowered, based on net list information of the LSI and constraint of a test design rule when automatically generating the test pattern. A test pattern generator increasing fault detection rate and carrying out a suitable test is obtained.

Abstract: There is disclosed a simulator having timing error detecting from input and output signal level changes. Different timing error verifications are carried out for respective elements. In similar constructions, different test rule error verifications are also carried out for the respective elements as a function of the contents of a test rule check value definition file.