Abstract: The invention relates to a process for the preparation of hydrocarbons by catalytic reaction of carbon monoxide with hydrogen, comprising the steps of:a) selecting a catalyst comprising:i) 3-80 parts by weight cobalt;ii) 0.1-100 parts by weight of at least one metal selected from zirconium, titanium and chromium, per 100 parts by weight silica, alumina and/or silica-alumina; andiii) an external surface area (Se)Se.ltoreq.70 cm.sup.2 /ml;b) activating the catalyst; andc) contacting the activated catalyst in a fixed bed form with a mixture of carbon monoxide and hydrogen having a hydrogen/carbon monoxide feed ratio (F)F.ltoreq.1.9under such conditions thatSe/F.gtoreq.12.5.

Abstract: Crystalline (metallo)silicates having in the as-synthesized, anhydrous form a molar composition expressed by the formula:(0-9)M.sub.2/n O.(4-9)R.sub.2 O.100SiO.sub.2. (0-2)X.sub.2 O.sub.3,wherein M is an alkali or alkaline earth metal ion having a valency n, R represents a tetramethylammonium cation or a precursor thereof, X represents at least one of Al, Fe, B or Ga, and having a specific X-ray diffraction pattern.The silicates can be prepared from an aqueous mixture comprising a source of silicon, optionally a source of at least one of aluminium, iron boron or gallium, and a source of tetramethylammonium cations or precursors thereof, which mixture is kept at a temperature of between 140.degree.-240.degree. C. whereby the following requirement is fulfilled: T.gtoreq.244.5-18.2 ln t, wherein T is the temperature (in .degree.C.

Abstract: A catalyst comprising a silica-containing carrier on which a metal component iron, nickel, or cobalt promoted by zirconium is supported snd, in addition, as promoter a noble metal from Group VIII of the Periodic Table; the promoter cobalt/zirconium catalyst is suitable for the preparation of hydrocarbons from carbon monoxide and hydrogen.

Abstract: C.sub.4.sup.- hydrocarbons are converted into syngas with a H.sub.2 /CO molar ratio between 0.25 and 2.25 by reforming at a pressure above 10 bar in the presence of specified amounts of carbon dioxide and steam followed by conversion of the syngas into C.sub.5.sup.+ hydrocarbons over a cobalt-containing catalyst or a catalyst combination comprising a cobalt-containing catalyst and having CO-shift activity.

Abstract: Supported cobalt catalysts with specified inhomogeneous cobalt distribution over the catalyst particles (expressed as a ratio (.SIGMA.V.sub.p /.SIGMA.V.sub.c).ltoreq.0.55 are prepared by immersion of a porous carrier into a solution of a cobalt compound in such a way that a given relation between the viscosity (in cS) and Temperature (degrees K.) of the solution and the immersion time (in sec) is met. For each immersion, this relation is (log v/t.times.T).times.10.sup.4 .gtoreq.1.

Abstract: A two-step process is disclosed wherein C.sub.9.sup.+ hydrocarbons are prepared from C.sub.4.sup.- hydrocarbons by steam reforming followed by Fischer-Tropsch synthesis over a special cobalt-containing catalyst. Yields of C.sub.9.sup.+ hydrocarbons are increased by recycling a gaseous fraction comprising unconverted H.sub.2 and CO as well as C.sub.8.sup.- hydrocarbon by-products and steam to the steam reformer.

Abstract: A process is disclosed for the preparation of C.sub.5 and higher boiling hydrocarbons by contacting a mixture of carbon monoxide and hydrogen over a supported cobalt catalyst in which the cobalt is distributed in a specified inhomogeneous manner on the support.

Abstract: A catalyst for the production of dimethyl ether from syngas, which comprises mixing a dehydration catalyst with a methanol synthesis catalyst comprising copper, zinc, chromium and/or aluminum which has been prepared by low-temperature co-precipitation from an aqueous solution containing specified amounts of the metals concerned.

Abstract: A two-step process is disclosed wherein C.sub.9.sup.+ hydrocarbons are prepared from C.sub.4.sup.- hydrocarbons by steam reforming followed by Fischer-Tropsch synthesis over a special cobalt-containing catalyst. Yields of C.sub.9.sup.+ hydrocarbons are increased by recycling a gaseous fraction comprising unconverted H.sub.2 and CO as well as C.sub.8.sup.- hydrocarbon by-products and steam to the steam reformer.

Abstract: Catalysts for the production of methanol from mixtures of carbon monoxide and hydrogen are prepared by dispersing in water a co-precipitate of zinc and at least one of chromium and aluminum together with a co-precipitate of copper, zinc and optionally at least one of chromium and aluminum, followed by spray drying of the dispersion, and calcining the spray dried material.

Abstract: A process for preparing a catalyst for converting syngas to middle distillates which comprises kneading and/or impregnating cobalt and another metal (Zr, Ti, Cr) onto a carrier (SiO.sub.2, Al.sub.2 O.sub.3, SiO.sub.2 /Al.sub.2 O.sub.3) in such a way that L and S satisfy the relation:(3+4R)>(L/S)>(0.3+0.4R), whereinL=the total quantity of cobalt present on the catalyst, expressed as mg Co/ml catalyst;S=the surface area of the catalyst, expressed as M.sup.2 /ml catalyst; and R=the weight ratio of the quantity of cobalt deposited on the catalyst by kneading to the total quantity of cobalt present on the catalyst.

Abstract: A process is described for preparing gasoline boiling range hydrocarbons with a high iso-paraffins content from syngas having a H.sub.2 /CO mol. ratio between 1.0 and 5.0 over a catalyst mixture comprising a methanol synthesis component which contains zinc and one or more metals selected from the group consisting of chromium, copper and aluminum and a crystalline metal silicate with ZSM-5 structure which contains SiO.sub.2 and one or more oxides of a trivalent metal A selected from the group consisting of aluminum, iron, gallium, rhodium, chromium and scandium, and wherein the SiO.sub.2 /A.sub.2 O.sub.3 molar ratio is higher than 10; and which catalyst mixture has been prepared by spray-drying followed by calcining at a temperature between 425.degree. and 525.degree. C.

Abstract: A Fischer-Tropsch catalyst is prepared by impregnating a silica carrier with a solution of a zirconium or titanium compound, calcining the composition thus obtained, thereafter impregnating the carrier with a cobalt compound-containing solution and calcining and reducing the composition thus obtained. Catalysts so prepared and containing 5-40 pbw of cobalt and 2-150 pbw of zirconium or titanium per 100 pbw of silica, are used in the preparation of hydrocarbons from a H.sub.2 /CO mixture.

Abstract: In a two-stage process for the conversion of H.sub.2 -poor syngas into hydrocarbons and oxygenates in which uncoverted syngas from the first stage product is converted in a second stage into paraffins over a Ni, Co or Ru catalyst, the H.sub.2 /CO molar ratio of the feed for the second stage is adjusted to the required value of 1.75-2.25 by blending this feed with an H.sub.2 -rich syngas with an H.sub.2 /CO molar ratio of at least above 1.75 which latter gas has been obtained by subjecting a small portion of the feed for the first stage to a high temperature (above 325.degree. C.) CO-shift.

Abstract: A process for hydroisomerization of C.sub.4 -C.sub.7 paraffins with a nickel and/or cobalt synthetic mica-montmorillonite catalyst which has been pretreated with hydrogen at a temperature of at least 400.degree. C.

Abstract: A process for the manufacture and/or conversion of hydrocarbons comprises contacting as feed any of: a gaseous mixture of carbon monoxide and hydrogen, acyclic organic compounds, hydrocarbon compounds, and mixtures thereof, under conversion conditions with a catalyst comprising silicalite.

Abstract: A process for the preparation of crystalline iron silicates with certain critical ratios of components in the starting mixture results in silicates having improved catalytic properties in conversion processes.

Abstract: A process is disclosed for the preparation of an aromatic hydrocarbon mixture from a mixture of carbon monoxide and hydrogen using a mixture of two catalysts; one is a conventional catalyst for the conversion of a CO/H.sub.2 mixture into acyclic oxygen-containing hydrocarbons and the other is a certain crystalline silicate containing at least one element selected from manganese, clacium, magnesium and titanium, and the alumina to silica ratio is greater than 0.005.

Abstract: An improved process for the preparation of certain crystalline iron silicates particularly suitable for converting acyclic oxygen-containing hydrocarbons into aromatic hydrocarbons wherein use of high silicon content compounds together with certain amines results in silicates having unexpected catalytic stability.

Abstract: A process is disclosed for the preparation of aromatic hydrocarbon mixtures from a feed mixture of carbon monoxide and hydrogen by contacting said feed at elevated temperature and pressure with a mixture of two catalysts; one capable of converting said feed into acyclic oxygen containing hydrocarbons and the other certain crystalline gallium silicates.