| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: present invention relates to catalyst systems and use thereof in Fischer-Tropsch synthesis. Described is a catalyst system which contains a Fischer-Tropsch synthesis catalyst or a catalyst precursor and a porous body, where the said porous body has size between 1 and 50 mm, preferably 1-30 mm, and the catalyst system has internal porosity between 50 and 95%. Described also is a method which involves the following steps: (i) feeding synthesis gas into a reactor; and (ii) bringing the synthesis gas into contact with a non-stationary catalyst for catalytic conversion of the synthesis gas at high temperature in order to obtain usually gaseous, usually liquid and optionally usually solid hydrocarbons from the synthesis gas; where the catalyst on step (ii) lies in a set of porous substrates having size of 1-50 mm, preferably 1-30 mm, thus forming a catalyst system, and where the said catalyst system has external porosity in the reactor in situ between 5 and 60%, and internal porosity of the catalyst system lies in the range of 50-95%. ^ EFFECT: use of the disclosed catalyst system provides a trade-off, where it is much easier to separate such catalyst systems from products in a suspension reactor (which lowers expenses), although they may be in suspended state and can therefore still move inside the reaction vessel; this ensures more uniform mass transfer and heat transfer during catalysis, but without immobilisation of the catalyst. |
