摘要:
The disclosure relates to a bituminous composition comprising at least one bitumen and at least one organogelling molecule taken alone or as a mixture, said organogelling molecule being represented by the following general formula (I): where: A represents an acyclic, cyclic or polycyclic, saturated or unsaturated, linear or branched hydrocarbon-based group having 3 to 92 carbon atoms, resulting from the polymerization of the side chains of at least one unsaturated fatty acid, X represents an NH group or an oxygen atom O, R1 represents a group chosen from: a linear or branched hydrocarbon-based group having 2 to 40 carbon atoms, optionally comprising one or more heteroatoms and optionally comprising one or more unsaturations, or a substituted or unsubstituted aromatic group, R2 represents a group chosen from: a hydrogen atom, a linear or branched hydrocarbon-based group having 1 to 40 carbon atoms, comprising one or more heteroatoms and optionally comprising one or more unsaturations, or a substituted or unsubstituted aromatic group, m and n represent, independently of one another, an integer that varies from 1 to 4, p represents an integer that varies from 0 to 4, q represents an integer that varies from 1 to 4 or a combination of these values, Y represents a group comprising a hydrogen bond donor such as the NH group and a hydrogen bond acceptor such as the C═O group.
摘要:
This invention relates to novel compositions of zeolites or microporous metallosilicates characterized by a continuous spatial distribution of the metal and silicon in the crystals and characterized by a crystal surface enriched in silicon relative to the internal part of the same crystals. This invention also relates to a synthesis method of producing these metallosilicates with spatial distribution of the constituting elements. These novel zeolitic compositions can be used in various hydrocarbon conversion reactions. The crystalline metallosilicates can be selected from the group consisting of aluminosilicates, gallosilicates, ferrosilicates, titanosilicates and borosilicates.
摘要:
The invention relates to a method of determining the rate of dilution of the lubricating oil by the fuel in an internal combustion engine. The invention is characterized in that it comprises the following steps consisting in: marking either the lubricating oil or the fuel with a radioactive tracer, measuring the radioactivity of an oil sample using a detector that is sensitive to the radioactive radiation emitted by the radioactive tracer, and transmitting the results of the aforementioned measurements to a computer which uses said results in order to calculate the rate of dilution of the lubricating oil by the fuel. The invention also relates to a device which is used to implement said method, in particular a test bench for engines.
摘要:
The invention relates to a catalyst for hydroconversion of hydrocarbons, comprising a support made from at least one refractory oxide, at least one group VIII metal and at least one group VIB metal, characterised in further comprising at least one organic compound with at least two thiol functions separated by at least one oxygenated group of formula (I): HS—CxHyOz-SH (I), where x=1 to 20, preferably 2 to 9 and for example x=6, y=2 to 60, preferably 4 to 12 and z=1 to 10, preferably 1 to 6. The invention further relates to a method for preparation, a method for activation of said catalyst and use of the catalyst for the hydrotreatment and/or hydrocracking of hydrocarbons.
摘要:
The present application relates to the use of a solution for the treatment of exhaust gases at the outlet of on-board or stationary diesel engines. It also relates to its use in any device for the treatment of these exhaust gases, regardless of whether the engines are engines of heavy goods vehicles or engines for light vehicles or also engines for stationary industrial engine applications.
摘要:
The invention relates to a process for the catalytic hydrotreating of a feed of oil origin, of diesel fuel type, in at least one fixed-bed hydrotreating reactor, for manufacturing diesel fuel, characterized in that incorporated into said feed are vegetable oils and/or animal fats up to a level of around 30% by weight, the mixture of said feed and vegetable oils and/or animal fats being introduced into the reactor operating in a single pass, without recycling liquid effluent at the top of the reactor.It also relates to a hydrotreating reactor for implementing said process, and to a corresponding hydrorefining unit.
摘要:
A process for the preparation of a catalyst from a catalytic precursor comprising a support based on alumina and/or silica-alumina and/or zeolite and comprising at least one element of group VIB and optionally at least one element of group VIII, by impregnation of said precursor with a solution of a C1-C4 dialkyl succinate. An impregnation step for impregnation of said precursor which is dried, calcined or regenerated, with at least one solution containing at least one carboxylic acid other than acetic acid, then maturing and drying at a temperature less than or equal to 200° C., optionally a heat treatment at a temperature lower than 350° C., followed by an impregnation step with a solution containing at least one C1-C4 dialkyl succinate followed by maturing and drying at a temperature less than 200° C. without subsequent calcination step. The catalyst is used in hydrotreatment and/or hydroconversion.
摘要:
Modified alkylphenol-aldehyde resins include one or more alkylamines, having preferably at least one primary amine type group as well as their use for improving the flow properties of motor fuels and hydrocarbon fuels, such as in particular jet fuel, gas oil, fuel oil domestic, heavy fuel oil.
摘要:
The present invention relates to a cylinder lubricant having a BN, determined according to the ASTM D-2896 standard, of greater than or equal to 40 milligrams of potassium hydroxide per gram of lubricant, comprising a lubricant base oil for a marine engine and at least one overbased detergent that is based on alkali or alkaline-earth metals, and which also contains an amount of 0.01% to 10% by weight relative to the total weight of the lubricant, of one or more compounds (A) chosen from esters of saturated fatty monoacids comprising at least 14 carbon atoms and of alcohols comprising at most 6 carbon atoms.
摘要:
Process for separating gases from a fluidized gas/solid mixture, comprising at least one injection of gas and optionally at least one injection of solids into and at least one discharge of solids from said fluidized bed, a discharge for gas from the mixture characterized in that it comprises a step of separating the solids entrained by the gas by means of an internal placed in that portion of the fluidized mixture where the voidage is greater than 0.7, occupying less than 10% of the free cross section of the bed.