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Catalyst development for selective conversion of syngas to mainly aromatic hydrocarbons
Author(s) -
Baerns M.,
Guan N.,
Körting E.,
Lindner U.,
Lohrengel M.,
Papp H.
Publication year - 1994
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440180217
Subject(s) - catalysis , syngas , chemistry , oxygenate , propene , zeolite , chemisorption , hydrocarbon , inorganic chemistry , fischer–tropsch process , oxide , chemical engineering , organic chemistry , selectivity , engineering
The paper describes the following catalytic systems tested in the Fischer‐Tropsch reaction and characterized by XPS, TEM, and CO chemisorption: (i) Fe/Mn oxides impregnated with Co, Cu, Pd, Rh and K, respectively, (ii) Co/Mn oxide catalysts with different compositions to maximize the formation of olefinic products. The impregnation of Fe/Mn oxides with Cu and a Co/Mn ratio of 1:4 led to the most promising catalysts. (iii) Rh/SiO 2 catalysts doped with rare earth compounds and ThO 2 to maximize the formation of oxygenates (iv) Mixtures of the catalysts (i), (ii), or (iii) with pentasil zeolites to form aromatic hydrocarbons. Two modes of operation were tested, namely a single‐bed reactor with a mechanical mixture of the components, and a dual‐bed operation with the FT component and the zeolite, respectively, in separate reactors. The optimal zeolite for the formation of the aromatics from propene was determined. A knowledge‐based expert system for catalyst selection was developed.