摘要:
The invention relates to a catalyst which can be applied to a method for converting synthesis gas, said catalyst comprising: a) a support made of a solid solution containing at least one first aluminate element with a mixed spinel structure of formula MxM'(1-X)AI2O4/AI2O3.SiO2, x ranging from 0 to 1 being excluded, or a simple spinel structure of formula MAI2O4/AI2O3 SiO2, wherein the support is calcinated in an at least partially oxidizing atmosphere at a temperature ranging from 850 °C to 900 °C, b) an active phase which is deposited on the support which contains one or several metals of group VIII, selected from amongst cobalt, nickel, ruthenium or iron. The catalyst is used in a fixed bed or in a suspension in a triphasic reactor for the synthesis of hydrocarbons from a CO, H2mixture.
摘要翻译:一种适用于合成气转化的催化剂,特别是ET淤浆法,所述催化剂包括:a)至少含有式M x M'(1-x)Al 2 O 4 / Al 2 O 3 -SiO 2混合尖晶石结构的第一铝酸盐元素的载体, 并且不包括0和1,或者简单的尖晶石结构式为MA1204 / Al2O3.SiO2,所述载体在至少部分氧化的气氛中在850℃和900℃之间的温度下煅烧,和b) 活性相沉积在所述载体上,其含有一种或多种选自钴,镍,钌或铁的VIII族金属。 所述催化剂用于固定床或悬浮在三相反应器中用于从CO,H 2混合物进行烃合成。
摘要:
0 Novel crystalline alumino silicates having the following composition in terms of the mole ratio of the oxides: wherein M is at least one cation having a valence n, x is at least 10 and y/x is between 0 and 25, said aluminosilicates having a characteristic X-ray diffraction pattern. The cation M in the aluminosilicates is preferably selected from H + , ammonium, alkali metal cations, alkaline earth metal cations, organic nitrogen-containing cations, aluminium cations, gallium cations and mixtures thereof. The invention also comprises a process for producing the aluminosilicate by mixing together a source of silica, a source of alumina, a source of alkali metal(s), water and an organic nitrogen containing base until a homogeneous gel is formed and crystallising the mixture at a temperature above 70°C for a period of at least 2 hours.
摘要:
The catalyst for producing monocyclic aromatic hydrocarbons is for producing monocyclic aromatic hydrocarbons having 6 to 8 carbon number from oil feedstock having a 10 volume% distillation temperature of 140°C or higher and a 90 volume% distillation temperature of 380°C or lower. The catalyst includes crystalline aluminosilicate, phosphorus, and a binder, and the amount of phosphorus is 0.1 to 10 mass% based on the total mass of the catalyst.
摘要:
A modified zeolite catalyst derived from a zeolite of a structural type which consists of a one-dimensional micropore structure of channels made from rings containing between 8 and 12 silicon/aluminium atoms is disclosed. It consists substantially of a plurality of crystallites having additional mesoporosity whose volume is in the range 0.09 to 0.25 ml 3 g -1 as mentioned by nitrogen absorption at 77°K and calculated by the BJH method. The mesoporosity may be introduced into the crystallites by e.g. treatment with aqueous sodium hydroxide at a pH at 25°C in excess of 8 for an extended period at elevated temperature. The catalyst shows improved resistance to catalyst deactivation and greater selectivity to higher hydrocarbons when used to e.g. oligomerize light alkenes e.g. propene or the butenes.