摘要:
The invention concerns a catalyst containing by weight:(a) from 10 to 99.99% of a mordenite being in major part shaped as needles and having a Si/Al atomic ratio of about 5 to 50, a benzene adsorption capacity of more than 5% by weight with respect to the dry mordenite weight, a volume V of a unit cell from 2.73 to 2,78 nm.sup.3, a sodium content by weight lower than 0.2% and adsorbing molecules of a kinetic diameter larger than about 6.6.times.10.sup.-10 m,(b) from 0 to 89.99% of a matrix,(c) from 0.005 to 15% of at least one metal from group VIII, and(d) from 0.005 to 10% of at least one metal from group IV A.The catalyst is used for hydroisomerizing cuts containing a high proportion of normal paraffins having 4, 5, 6 or 7 carbon atoms per molecule to obtain with a good conversion and selectivity a mixture containing a high proportion of isoparaffins.
摘要:
The invention concerns a hydrocarbon cracking catalyst containing a mixture of amorphous matrix with a zeolite, the zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio ranging from about 8 to 70, a sodium content lower than 0.15% by weight, a parameter a.sub..degree. of elementary mesh from 24.55 to 24.24.times.10.sup.-10 m, a capacity C.sub.Na to retake sodium ions, expressed in grams of sodium per 100 grams of modified zeolite, higher than 0.85, a specific surface higher than 400 m.sup.2.g.sup.-1, a sodium ion uptake steam adsorption capacity at 25.degree. C. (with a P/Po ratio of 0.10) higher than 6% by weight, a pore distribution such that from 1 to 20% of the pore volume is pores of a diameter ranging from 20 to 80.10.sup.-10 m, the remaining pore volume being essentially pores of a diameter lower than 20.10.sup.-10 m, the matrix being characterized by the following textural properties:S .gtoreq.100 m.sup.2.g.sup.-1TPV .gtoreq.0.4 cm.sup.3.g.sup.-1PV.sub.75 .gtoreq.0.25 cm.sup.3.g.sup.-1PV.sub.75 /TPV .gtoreq.0.5
摘要:
The invention relates to a process for dewaxing an atomspheric or a vacuum gas oil in the presence of at least one catalyst comprising:a/ 2 to 99.4% by weight of a synthetic crystalline zeolite of the ferrisilicate type, the approximate chemical formula of the zeolite being M.sub.2/n O, Fe.sub.2 O.sub.3, xSiO.sub.2 where M represents a proton and/or a metal cation, n is the valence of M and x is a number ranging from 40 to 1,000, the zeolite having been synthetized in a fluoride medium and showing a fluorine content ranging from about 0.01 to 1.6% by weight, the zeolite having an X-ray diffraction diagram represented in Table 1 of the description;b/ 0.1 to 97.5% by weight of a matrix; andc/ at least one promoter selected from the group consisting of Pd, Pt, NiO, CoO, MoO.sub.3 and WO.sub.3.
摘要:
The invention concerns a catalyst containing by weight:(a) from 10 to 99.99% of a mordenite being in major part shaped as needles and having a Si/Al atomic ratio of about 5 to 50, a benzene adsorption capacity of more than 5% by weight with respect to the dry mordenite weight, a volume V of elementary mesh from 2.73 to 2.78 nm.sup.3, a sodium content by weight lower than 0.2% and adsorbing molecules of a kinetic diameter larger than about 6.6.times.10.sup.-10 m,(b) from 0 to 89,99% of a matrix,(c) from 0,005 to 15% of at least one metal from group VIII, and(d) from 0,005 to 10% of at least one metal from group IV A.The catalyst is used for hydroisomerizing cuts containing a high proportion of normal paraffins having 4, 5, 6 or 7 carbon atoms per molecule to obtain with a good conversion and selectivity a mixture containing a high proportion of isoparaffins.
摘要:
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.
摘要:
The present invention provides a process for the regeneration of a catalyst comprising at least one metal from Group VIII and at least one metal from Group VIB which are deposited on a refractory oxide support, comprising: at least one first step of heat treatment of the catalyst in the presence of oxygen and at a temperature ranging from 350° C. to 550° C.; at least one second step of deposition, at the surface of the catalyst, of one or more additive(s) of formula (I):
摘要:
The present invention concerns a process for “ex situ” treatment of a hydrogenation catalyst containing nickel prior to use, consisting of carrying out three steps, namely bringing the catalyst into contact with at least one sulphur-containing compound or agent (the step termed selectivation), treating said catalyst with hydrogen at a temperature of more than 250° C. (the step termed reduction) and passivation of said catalyst.
摘要:
A process for presulfurizing a refining catalyst or petrochemical catalyst consists of bringing a catalyst into contact with liquid elementary sulfur or elementary sulfur dissolved in a liquid, preferably another sulfur compound such as an organic polysulfide, in the presence of a stabilizing agent, e.g., a fatty acid, mercaptan or alcohol.
摘要:
The invention concerns a novel presulphuration process for a hydrocarbon conversion catalyst. Presulphuration is preferably carried out offsite (ex-situ). The catalyst presulphuration process is characterized in that a presulphuration agent is used which contains (a) at least one first sulphur compound with a decomposition point T1 of less than 220.degree. C. and (b) at least one second sulphur compound with a decomposition point greater than about 220.degree. C.
摘要:
A method of hydrocracking charges emanating from the Fischer-Tropsch process, in which:(a) hydrogen is reacted with the charge in contact with a catalyst 1 in a first reaction zone, the said catalyst 1 comprising at least one alumina-based matrix and at least one hydro-dehydrogenation component;(b) the effluent from the first reaction zone is put into contact with a catalyst 2 in a second reaction zone, the said catalyst 2 comprising:20 to 97% by weight of at least one matrix;3 to 80% by weight of at least one Y zeolite in hydrogen form,the said zeolite being characterized by an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of over 4.5:1, a sodium content of less than 1% by weight determined on a zeolite calcined at 1100.degree. C.; an a.sub.o crystal parameter of the elemental mesh of less than 24.70.times.10.sup.-10 m; and a specific surface area determined by the BET method of over 400 m.sup.2.g.sup.-1 ;and at least one hydro-dehydrogenation component.
摘要翻译:一种从费 - 托法生产的加氢裂化装料的方法,其中:(a)在第一反应区中使氢气与与催化剂1接触的电荷反应,所述催化剂1包含至少一种基于氧化铝的基体和 至少一种氢脱氢组分; (b)来自第一反应区的流出物与第二反应区中的催化剂2接触,所述催化剂2包含:至少一种基质的20至97重量%; 3至80重量%的至少一种氢形式的Y沸石,所述沸石的特征在于SiO 2 / Al 2 O 3摩尔比超过4.5:1,钠含量小于1重量%,在沸石上煅烧 1100℃。 元素网的ao晶体参数小于24.70x10-10 m; 并且通过BET法测定的比表面积超过400m 2·g -1; 和至少一种氢脱氢组分。