摘要:
Process for preparing olefins, which comprises the following steps: a) preparation of a synthesis gas comprising carbon monoxide and hydrogen, b) introduction of carbon dioxide recirculated from step d) into the synthesis gas during or after the preparation of synthesis gas as per step a), c) conversion of the synthesis gas having a hydrogen to carbon monoxide ratio of ≦1.2:1 which is obtained in step b) into olefins in the presence of a Fischer-Tropsch catalyst, d) removal of the carbon dioxide comprised in the reaction product from step c), where the ratio of hydrogen to carbon monoxide in step c) is set via step b).
摘要:
Process for preparing olefins, which comprises the following steps: a) preparation of a synthesis gas comprising carbon monoxide and hydrogen, b) introduction of carbon dioxide recirculated from step d) into the synthesis gas during or after the preparation of synthesis gas as per step a), c) conversion of the synthesis gas having a hydrogen to carbon monoxide ratio of ≦1.2:1 which is obtained in step b) into olefins in the presence of a Fischer-Tropsch catalyst, d) removal of the carbon dioxide comprised in the reaction product from step c), where the ratio of hydrogen to carbon monoxide in step c) is set via step b).
摘要:
Iron- and manganese-containing heterogeneous catalyst, and a process for producing it, including the following steps: thermal decomposition of gaseous iron pentacarbonyl to give carbonyl iron powder having spherical primary particles; treatment of carbonyl iron powder with hydrogen, resulting in the metallic spherical primary particles at least partly agglomerating; surface oxidation of the iron particles to form iron oxide; contacting the particles with an aqueous solution of a manganese compound; drying in the presence of oxygen and subsequent calcination in the absence of oxygen, resulting in oxygen-comprising manganese compounds on the particles; and finally reaction of these with the iron oxide to form a mixed oxide of the formula MnxFe3-xO4, where 0
摘要翻译:含铁和锰的非均相催化剂及其制备方法,包括以下步骤:五羰基气态铁的热分解,得到具有球形一次颗粒的羰基铁粉; 用氢气处理羰基铁粉末,导致金属球形初级颗粒至少部分凝聚; 铁颗粒的表面氧化形成氧化铁; 使所述颗粒与锰化合物的水溶液接触; 在氧气存在下干燥,随后在不存在氧气下进行煅烧,在颗粒上产生含氧的锰化合物; 最后使其与氧化铁反应形成式Mn x Fe 3-x O 4的混合氧化物,其中0
摘要:
Iron- and manganese-comprising heterogeneous catalyst and process for producing it, which comprises the following steps: I. thermal decomposition of gaseous iron pentacarbonyl to give carbonyl iron powder having spherical primary particles, II. treatment of carbonyl iron powder obtained in step I with hydrogen, resulting in the metallic spherical primary particles at least partly agglomerating, III. surface oxidation of the iron particles from step II (i.e. agglomerates=secondary particles, and also any primary particles still present) to form iron oxide, IV. contacting of the particles from step III with an aqueous solution of a manganese compound, V. drying in the presence of oxygen and subsequent calcination in the absence of oxygen, resulting firstly in oxygen-comprising manganese compounds on the particles and finally reaction of these with the iron oxide to form a mixed oxide of the formula MnxFe3-xO4, where 0
摘要翻译:含铁和锰的非均相催化剂及其制备方法,其包括以下步骤:I.气态铁五羰基热分解,得到具有球形初级颗粒的羰基铁粉,II。 用氢气处理在步骤I中获得的羰基铁粉末,导致金属球形初级颗粒至少部分凝聚,III。 来自步骤II的铁颗粒的表面氧化(即附聚物=二次颗粒,以及仍然存在的任何初级颗粒)以形成氧化铁。 将来自步骤III的颗粒与锰化合物的水溶液接触,V在氧气存在下干燥,随后在不存在氧气下进行煅烧,首先在颗粒上含氧的锰化合物,最后将它们与 形成式Mn x Fe 3-x O 4的混合氧化物,其中0
摘要:
Iron- and copper-comprising heterogeneous catalyst and process for producing it, which comprises the following steps: I. thermal decomposition of gaseous iron pentacarbonyl to give carbonyl iron powder having spherical primary particles, II. treatment of carbonyl iron powder obtained in step I with hydrogen, resulting in the metallic spherical primary particles at least partly agglomerating, III. surface oxidation of the iron particles from step II (agglomerates=secondary particles, and also any primary particles still present) to form iron oxide, IV. contacting of the particles from step III with an aqueous solution of a copper compound, V. drying in the presence of oxygen and subsequent calcination in the absence of oxygen, resulting firstly in oxygen-comprising copper compounds on the particles and finally reaction of these with the iron oxide to form a mixed oxide of the formula CuxFe3-xO4, where 0
摘要翻译:含铁和铜的非均相催化剂及其制备方法,其包括以下步骤:I.气态铁五羰基热分解,得到具有球形初级颗粒的羰基铁粉,II。 用氢气处理在步骤I中获得的羰基铁粉末,导致金属球形初级颗粒至少部分凝聚,III。 来自步骤II的铁颗粒的表面氧化(附聚物=二次颗粒,以及仍然存在的任何初级颗粒)以形成氧化铁。 将来自步骤III的颗粒与铜化合物的水溶液接触,V.在氧气存在下干燥,随后在不存在氧气的情况下煅烧,首先在颗粒上含氧的铜化合物,最后将它们与 所述氧化铁形成式CuxFe 3-x O 4的混合氧化物,其中0
摘要:
Iron- and copper-containing heterogeneous catalyst, and a process for producing it, including the following steps: thermal decomposition of gaseous iron pentacarbonyl to give carbonyl iron powder having spherical primary particles; treatment of carbonyl iron powder with hydrogen, resulting in the metallic spherical primary particles at least partly agglomerating; surface oxidation of the iron particles to form iron oxide; contacting the particles with an aqueous solution of a copper compound; drying in the presence of oxygen and subsequent calcination in the absence of oxygen, resulting in oxygen-comprising copper compounds on the particles; and finally reaction of these with the iron oxide to form a mixed oxide of the formula CuxFe3-xO4, where 0
摘要:
Iron-comprising heterogeneous catalyst and a process for producing it, which comprises the steps of thermal decomposition of gaseous iron pentacarbonyl to give carbonyl iron powder having spherical primary particles, treatment of carbonyl iron powder with hydrogen, resulting in the metallic spherical primary particles at least partially forming agglomerates, contacting the agglomerates with iron pentacarbonyl, and thermal decomposition of the iron pentacarbonyl to give at least predominantly pore-free and void-free secondary particles.
摘要:
Iron—comprising heterogeneous catalyst and a process for producing it, which comprises the following steps:I. thermal decomposition of gaseous iron pentacarbonyl to give carbonyl iron powder having spherical primary particles,II. treatment of carbonyl iron powder obtained in step I with hydrogen, resulting in the metallic spherical primary particles at least partially agglomerating,III. contacting of the agglomerates (=secondary particles) with iron pentacarbonyl,IV. thermal decomposition of the iron pentacarbonyl applied in step III to give at least predominantly pore- and void-free secondary particles.Process for preparing olefins by reaction of carbon monoxide with hydrogen in the presence of a catalyst, with the abovementioned iron-comprising heterogeneous catalyst being used as catalyst.
摘要:
A process for removing sulfur compounds from a hydrocarbonaceous gas mixture, which comprises contacting the hydrocarbonaceous gas mixture with an adsorber material comprising copper oxide on magnesium silicate as support material.
摘要:
The present invention relates to a process for improving the catalytic properties of a catalyst comprising one or more elements selected from the group consisting of cobalt, nickel and copper, said catalyst being present in the form of a structured monolith, by contacting the catalyst with one or more basic compounds selected from the group of the alkali metals, alkaline earth metals and rare earth metals. The invention further relates to a process for hydrogenating compounds which comprise at least one unsaturated carbon-carbon, carbon-nitrogen or carbon-oxygen bond in the presence of a catalyst comprising one or more elements selected from the group consisting of cobalt, nickel and copper, said catalyst being present in the form of a structured monolith, by contacting the catalyst with one or more basic compounds selected from the group of the alkali metals, alkaline earth metals and rare earth metals. The present invention also relates to the use of a basic compound selected from the group of the alkali metals, alkaline earth metals and rare earth metals for improving the catalytic properties of a catalyst comprising cobalt and/or copper and/or nickel, said catalyst being present in the form of a structured monolith.