Chemistry: fischer-tropsch processes; or purification or recover – Miscellaneous
Patent
1983-02-22
1984-12-11
Mars, Howard T.
Chemistry: fischer-tropsch processes; or purification or recover
Miscellaneous
518713, 518714, 518715, 518716, 518721, C07L 104
Patent
active
044878516
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a novel catalyst composition for the conversion of synthesis gas to hydrocarbons.
Gallium containing catalyst compositions and the use thereof as hydrocarbon conversion catalysts are well known. These are claimed and described for example in our British Patent Specification Nos. 1496379, 1507549, 1507778, 1537780 and 1533169, and in our published European Patent Application Nos. 0024147 and 0024930. Amongst the various hydrocarbon conversion processes disclosed in these publications are dehydrogenation, dimerisation, isomerisation, cyclisation and aromatisation. It is also known from British Patent Specification No. 1495794 that aluminosilicates when used in conjunction with a metal compound of appropriate activity can convert synthesis gas to higher molecular weight hydrocarbons especially if used together with an alumina binder.
It has now been found that for the conversion of synthesis gas to hydrocarbons using a specific combination of metal compounds as catalysts shows improved activity.
Accordingly, the present invention is a process for converting synthesis gas to hydrocarbons by contacting said synthesis gas with a catalyst composition, characterised in that the catalyst composition comprises an oxide of at least one metal selected from gallium and indium, and contains an oxide of at least one additional metal selected from Group VIII and the B group elements of Groups I-VII including the Lanthanides and Actinides of the Periodic Table of Elements.
The Periodic Table of Elements referred to herein is the Table appearing on pages 448 and 449 of the 44th Edition of the "Handbook of Chemistry and Physics", edited by Hodgman, C. D. and published by The Chemical Rubber Publishing Co., Ohio, USA (1963).
The additional oxide is preferably that of at least one metal selected from copper, zinc, scandium, yttrium, lanthanum, titanium, zirconium, hafnium, chromium, molybdenum, tungsten, manganese, rhenium, iron, ruthenium, cobalt, rhodium, iridium, nickel, palladium, platinum, cerium, terbium, uranium and thorium. Oxides of thorium, cerium and uranium are most preferred.
The catalyst compositions used in the present process are suitably prepared by mixing the respective compounds; for instance, by mixing a suspension of the respective compounds, eg the oxides, in water and evaporating the mixture to form a cake. The cake may thereafter be filtered, washed and dried, and the dried cake crushed and calcined at elevated temperature to produce the desired catalyst composition. The calcination is suitably carried out in an oxidising atmosphere, eg air.
The respective amounts of gallium and/or indium and the additional metal components in the catalyst composition may vary over a wide range depending upon the end use of the catalyst. Thus, in the catalyst compositions now used, the oxides of gallium and/or indium are suitably present in an amount of between 1-75% by weight preferably between 5 and 50% by weight; correspondingly, the additional metal oxide is suitably present in an amount of between 25 and 99% by weight preferably between 50 and 95% by weight.
The catalyst compositions used in the present invention may contain in addition to the metal compounds a further component which in some cases can also act as support. This further component is suitably a crystalline silicate, preferably a crystalline aluminosilicate having a high silica to alumina ratio ie greater than 5:1. Specific examples of such aluminosilicates include the MFI type zeolites eg ZSM-5; the MEL type zeolites eg ZSM-11; ZSM-12; ZSM-23; ZSM-35; ZSM-38; zeolite-.beta. and the MOR type zeolites (MFI, MEL and MOR are examples of zeolite structure types nomenclature recommended by IUPAC in "Chemical Nomenclature, and Formulation of Compositions of Synthetic and Natural Zeolites," IUPAC Yellow Booklet, 1978; See also "Atlas of Zeolite Structure Types" by W M Meier and D H Olsen, International Zeolite Association, 1978). Thus in the catalyst composition now used the combined amount by weight of the gallium and/or ind
REFERENCES:
patent: 3709979 (1973-01-01), Chu
patent: 4086262 (1978-04-01), Chang et al.
patent: 4208305 (1980-06-01), Kouwenhoven et al.
patent: 4331774 (1982-05-01), Boersma et al.
patent: 4338089 (1982-07-01), Schaper et al.
Heyward Malcolm P.
Young Dennis
British Petroleum Company p.l.c.
Mars Howard T.
LandOfFree
Catalyst composition for conversion of synthesis gas to hydrocar does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalyst composition for conversion of synthesis gas to hydrocar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst composition for conversion of synthesis gas to hydrocar will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1463652