Abstract:
The present invention is directed to a hydroprocessing catalyst containing at least one catalyst support, one or more metals, optionally on or more molecular sieves, optionally one or more promoters, wherein deposition of at least one of the metals is achieved in the presence of a modifying agent.
Abstract:
The invention relates to a catalyst including an amorphous alumina support, C1-C4 dialkyl succinate, citric acid and optionally acetic acid, phosphorus, and a hydro-dehydrogenating function including at least one group VIII element and at least one group VIB element, a catalyst, the Raman spectrum of which includes the most intense bands characteristic of the Keggin heteropolyanions (974 and/or 990 cm -1 ), of C1-C4 dialkyl succinate, and of citric acid (particularly, 785 and 956 cm -1 ). The invention also relates to the method for preparing said catalyst in which a catalytic precursor in the dried, calcined, or reclaimed state and containing the elements of the hyro-dehydrogenation function, and optionally phosphorus, is impregnated with an impregnation solution including at least one C1-C4 dialkyl succinate, citric acid, and optionally at least one phosphorus compound and optionally acetic acid, and is then dried. The invention also relates to the use of said catalyst in any hydrotreatment process.
Abstract:
The invention relates to a method for the hydrodesulfurization of a gasoline fraction containing hydrocarbons having at least two carbon atoms per molecule and having a final boiling point of no higher than 250°C, wherein the method comprises contacting the gasoline fraction with at least one catalyst, the active phase of which includes at least one Group VIII metal and at least one Group VIB metal deposited on a substrate, said catalyst being prepared according to a method including at least: i) a step of contacting at least said substrate with at least one solution containing at least one precursor of at least said Group VIII metal and at least one precursor of at least said Group VIB metal; ii) a step of contacting at least said substrate with at least one organic compound comprising at least one cyclic oligosaccharide consisting of at least six glucopyranose subunits bonded at α-(1,4); iii); a drying step for obtaining at least said Group VIII metal and at least said Group VIB metal in oxide form; and then iv) a sulfurization step in order to obtain the active phase in sulfide form, wherein steps i) and ii) can be carried out separately in any order, or simultaneously.
Abstract:
A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins, said catalyst component containing magnesium, titanium, and halogen, and further containing an internal electron donor having a structure: [R 1 -O-C(O)-O-] x R 2 wherein R 1 is independently at each occurrence, an aliphatic or aromatic hydrocarbon, or substituted hydrocarbon group containing from 1 to 20 carbon atoms; x is 2-4; and R 2 is an aliphatic or aromatic hydrocarbon, or substituted hydrocarbon group containing from 1 to 20 carbon atoms, provided that there are 2 atoms in the shortest chain connecting a first R 1 O C(O)-O- group and a second R 1 -O-C(O)-O- group.
Abstract:
A composition having a substantial or material absence of or no phosphorous and comprising a support material, a metal compound and either a hydrocarbon oil or a polar additive or a combination of both a hydrocarbon oil and polar additive. The polar additive has particularly defined properties including having a dipole moment of at least 0.45. The composition is useful in the hydroprocessing of hydrocarbon feedstocks, and it is especially useful in the hydrotreating of vacuum gas oils and petroleum resid feedstocks.
Abstract:
A catalyst composition comprising a cation and an anion of the formula A n q- Q p m+ , wherein m, n, p, and q are positive integers, wherein m * p = n * q, wherein Q m+ is an organo onium, and A q- is an anion, provided that at least one A q- is selected from the formula (I) wherein each R independently is H, halo, alkyl, aryl, aralkyl, or cycloalkyl, and which also may be halogenated, fluorinated, or perfluorinated, wherein two or more of R and R' groups may together form a ring, wherein each R group independently may contain one or more heteroatom(s), wherein R' can be the same as R, with the proviso that R' cannot be halo, and wherein the catalyst composition is essentially free of hydrocarbon containing alcohol. Also provided are a fluoropolymer composition including this curative, a method of making a fluoropolymer, and fluoropolymer articles containing curable or cured fluoropolymer compositions
Abstract:
A composition that comprises a support material having incorporated therein a metal component and impregnated with both hydrocarbon oil and a polar additive. The composition that is impregnated with both hydrocarbon oil and polar additive is useful in the hydrotreating of hydrocarbon feedstocks, and it is especially useful in applications involving delayed feed introduction whereby the composition is first treated with hot hydrogen, and, optionally, with a sulfur compound, prior to contacting it with a hydrocarbon feedstock under hydrodesulfurization process conditions.