摘要:
A method of supporting a hydrocarbon synthesis catalyst material comprising a catalytically active metal and a carrier material on a substrate comprising the steps of: (a) applying the catalyst material to the substrate; and (b) heating the catalyst material to form a catalyst material layer fixed to the substrate, characterised in that—the catalyst carrier is a porous inorganic refractory oxide or precursor therefor; the catalyst material applied in step (a) comprises 60 to 90 weight % solvent calculated on the total weight of the catalyst material layer; when the catalyst material is subjected to the heating step (b) it comprises at most 10 weight % of solvent, calculated on the total weight of the catalyst material layer; in heating step (b) the catalyst material is heated to a temperature in the range between 250° C. and 800° C.; cracks having sub-millimetre widths are uniformly formed in the layer; after step (b) the catalyst material layer has a thickness of 5-200 microns. The control of cracking of the catalyst material on the substrate, especially the presence of cracks at regular distances such that there is no continuous catalyst layer on the substrate surface, reduces any stress build-up.
摘要:
A method of supporting a hydrocarbon synthesis catalyst material comprising a catalytically active metal and a carrier material on a metallic substrate in which the catalyst material is applied to the substrate and is heated to form a catalyst material layer fixed to the substrate with cracks having sub-millimeter widths formed in the layer creating domains with the range of the relative sizes of the domains being approximately 1:5.
摘要:
The invention relates to a method for applying a layer comprising a carrier material to a highly porous support, said method comprising the following steps: (a) applying a mixture comprising a liquid and a carrier material to a highly porous support having a size of at least 1 mm and a porosity within the range of between 50 and 98 volume %; (b) centrifuging and spinning the support; (c) drying and/or calcining the support.
摘要:
The present invention relates to a process for the catalytic partial oxidation of a hydrocarbonaceous feedstock, which process consists of contacting a feed consisting of the hydrocarbonaceous feedstock and an oxygen-containing gas with a catalyst having metals of Group VIII of the Periodic Table of Elements, wherein the Group VIII metals are at least rhodium and iridium in intimate association with each other.
摘要:
A catalyst comprising a catalytically active metal, selected from Ru, Rh, Os and Ir, associated with at least one inorganic metal cation or precursor thereof, wherein the inorganic metal cation or precursor thereof is present in intimate association supported on or with the catalytically active metal, a process for the preparation of the catalyst, and a process for the preparation of carbon monoxide and/or hydrogen from a hydrocarbonaceous feedstock using the catalyst.
摘要:
The present invention relates to a catalyst for use in a process for the preparation of hydrocarbons comprising cobalt and manganese and/or vanadium, supported on a carrier, wherein the cobalt:(manganese+vanadium) atomic ratio is at least 12:1. Preferably, the cobalt:(manganese+vanadium) atomic ratio is at most 1500:1. The invention further relates to a process for the preparation of hydrocarbons which comprises contacting a mixture of hydrogen and carbon monoxide at elevated temperature and pressure with a catalyst as described hereinbefore. Typically, at least part of the cobalt is present in the metallic state.