Abstract:
The invention relates to a process for producing an alkylbenzene from benzene and an aliphatic mono-olefin in the presence of a catalyst based on a dealuminized Y zeolite with a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 ranging from 8 to 70, the product of this reaction being afterwards fractionated into a first fraction containing non converted benzene and a mono-alkylbenzene and a second fraction containing a poly-alkylbenzene, said second fraction reacting then with benzene in the presence of a catalyst based on a dealuminized mordenite with a total atomic ratio Si/Al ranging from 30 to 80. The invention especially applies to the production of ethylbenzene and cumene respectively from ethylene and propene.
Abstract translation:本发明涉及一种在基于SiO 2 / Al 2 O 3的摩尔比为8至70的脱铝Y沸石的催化剂存在下由苯和脂族单烯烃生产烷基苯的方法,该反应产物之后 分馏成含有未转化的苯和单烷基苯的第一馏分和含有聚烷基苯的第二馏分,所述第二馏分在基于脱铝丝光沸石的催化剂存在下与苯反应,总原子比Si / Al 范围从30到80.本发明特别适用于从乙烯和丙烯生产乙苯和枯烯。
Abstract:
The invention concerns a new stabilized and dealuminated zeolite of OMEGA structure, characterized by:a total SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least 10,a sodium content lower than 0.5% by weight,a and c parameters of elementary mesh respectively lower than 1.814 nm and 0.759 nm,a nitrogen adsorption capacity at 77 K higher than about 5% by weight for a partial pressure P/P.sub.o of 0.19,a lattice of mesopores whose radii range preferably from 1.5 to 14 nm.This zeolite can be used in admixture with a convenient matrix in reactions of hydrocarbon conversion.
Abstract translation:本发明涉及一种OMEGA结构的新的稳定和脱铝沸石,其特征在于:SiO 2 / Al 2 O 3的总摩尔比至少为10,钠含量低于0.5重量%,基本网格的a和c参数分别低于1.814nm 和0.759nm,对于分压P / Po为0.19,77K时的氮吸附容量高于约5重量%,半径范围优选为1.5至14nm的中孔的晶格。 该沸石可以与烃转化反应中的方便的基质混合使用。
Abstract:
The invention relates to a novel hydrocarbon hydroconversion catalyst. This catalyst is a mixture of a matrix and a zeolite, the zeolite having a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 comprised between about 8 and 70, a sodium content below 0.15% by weight, a parameter a of the elementary mesh comprised between 24.55.times.10.sup.-10 m and 24.24.times.10.sup.-10 m, a sodium ion take-up capacity C.sub.Na expressed in grams of sodium per 100 grams of the modified zeolite, higher than 0.85%, a specific surface higher than 400 m.sup.2.g.sup.-1, a water vapor adsorption capacity at 25.degree. C. (at a P/Po ratio equal to 0.10) higher than 6%, a pore distribution comprised between 1 to 20% of the pore volume, contained in pores of diameter situated between 20 and 80.times.10.sup.-10 m, the remainder of the volume being essentially contained in pores of diameter less than 20.times.10.sup.-10 m. The pore volume V (desorption isotherm of nitrogen) and the micropore distribution DV/dD are demonstrated particularly in FIG. 1.
Abstract:
The invention concerns a new catalyst containing (a) a zeolite carrier, (b) a metal from group VIII and (c) an additional metal selected from tin, germanium and lead, forming an alloy with the metal of group VIII, said additional metal being introduced as organic compound.The catalyst can be used, in particular, in hydrocarbon hydrocracking reactions.The figure of the accompanying drawing illustrates the conversion of n-heptane in the presence of a catalyst containing palladium and tin. Curve (A) illustrates this conversion at different temperatures, curves (B) and (C) giving the results after ageing of the catalyst.
Abstract:
The invention provides a process for the off site regeneration of a solid catalyst, comprising two consecutive steps: a first step of washing the catalyst using one or more fluid(s) in the supercritical state, so as to extract from the catalyst at least a portion of the hydrocarbons present at the surface of the latter, followed by a second step of combustion of at least a portion of the coke present at the surface of the said catalyst by a heat treatment of the latter in the presence of oxygen and at a temperature ranging from 300° C. to 600° C.
Abstract:
Process for separating at least one type of catalyst or adsorbent particles having similar colors characterized in that such particles undergo an oxidative heating treatment for generating particle of different colors, and then particles are separated using a color sorting process for separating at least one type of particles.
Abstract:
The present invention concerns a process for ex situ oxidizing passivation of hydrocarbon hydroconversion catalysts, in particular for hydrotreatment in their sulphurized states, in which the sulphurized catalyst undergoes two treatments: contact with an oxidizing gas stream, and contact with an organic liquid (for example hydrocarbon) which partially fills its pores.
Abstract:
This invention relates to a process of ex-situ oxidizing passivation of catalysts for hydroconversion of hydrocarbons and especially of hydrotreating, in their sulfide state, process in which the sulfurized catalyst is brought into contact with an oxidizing gas flow that can be dry or wet, during heat treatment at more than 50° C. This invention, for passivation of sulfide phases, can be equally well implemented for a process that takes place in a fixed bed or a fluidized bed, for example a moving bed.
Abstract:
Process for separating at least one type of catalyst or adsorbent particles having similar colours characterized in that such particles undergo an oxidative heating treatment for generating particle of different colours, and then particles are separated using a colour sorting process for separating at least one type of particles.
Abstract:
The invention relates to a process for incorporating sulfur in the porosity of the solid particles of a catalyst for the conversion of hydrocarbons or an adsorbent. This process is carried out off-site in the presence of hydrogen sulfide that is pure or diluted in hydrogen or nitrogen, a process in which said particles are made to rise or fall in a sulfur incorporation zone that comprises at least one vibratory helical coil that is essentially tubular in shape and that comprises at least two turns, whereby said particles are subjected to a temperature profile over the majority of their path in said coil and whereby said particles are brought into contact with at least one fluid on at least one portion of their path.