Patent ID: 8853119
Filing Date: 2014-10-07
Classification: B01J,C10G

Abstract:
1. A synthesis method for a ruthenium sulfide (RuS 2 ) promoted with an additional metal to obtain a family of ruthenium precursory complex to obtain ruthenium sulfide catalysts comprising the steps of: a) dissolving hydrated ruthenium chloride in a solution of R1COR2, R2-OH, C wherein: R1 is equal to OH or a lineal chain or branched radical C1 to C8, R2 is equal to H, a lineal chain or branched radical C1 to C8, with relation 0.01 to 40 ml of solvent per gram of salt dissolved in methanol, ethanol or acetone; b) dissolving ammonium chloride in solution of R1COR2, R2-OH, C wherein: R1 is equal to OH, a lineal chain or branched radical C1 to C8, R2 is equal to H or to a lineal chain or branched radical C1 to C8, with relation 0.01 to 40 ml of solvent per gram of salt dissolved in water, methanol, ethanol, acetone or one combination thereof; c) dissolving an inorganic salt of transition metals of groups VIB or VIIIB with a ratio of the transition metal to the ruthenium from 0.01 to 3, in solution of R1COR2, R2-OH, C wherein: R1 is equal to OH or to a lineal or branched radical C1 to C8 and R2 is equal to H or to a radical of straight-chain or branched C1 to C8, with relation 0.01 to 40 ml of solvent per gram of salt, dissolved in water, methanol, ethanol, acetone, or a combination thereof; d) adding the solution of b) in a molar relation of 1:1 to 10:1 of NH e) adding NH f) adding to the solution of step d) or e) a R3COR4 or R3COOR5 compound, wherein: R3 is a linear chain or branched radical C1 to C8, R4 is equal to H or a linear chain or branched radical C1 to C8 and include 1 or 2 oxygen atoms or 1 nitrogen atom, R5 is equal to a hydrogen radical or a linear chain or branched radical C1 to C10; g) leaving to the solution of f) in mechanical agitation for 30 minutes between 100-700 rpm and resting time from 0.1 to 3 hours to allow crystallization; a family of promoted ruthenium complex compounds very soluble in water and sparingly soluble in acetone is produced and precipitated, the family of ruthenium complex compounds have decomposition temperatures above 200° C. and total decomposition to metallic charge (M h) incorporating the ruthenium complex to a support by using a method selected from an incipient impregnating method or a wet impregnating method, wherein a support includes: TiO wherein the support is impregnated with a solution of the precursory complex in weight relation 1-90% of dissolved metallic charge in the minimum amount of solvent, wherein during the impregnation, the solution of the ruthenium complex compounds is dripped over the catalyst until filling all porosity, by incipient impregnation or moistening the catalyst, wet impregnation; i) decomposing and activating the ruthenium precursor complex at temperatures between 350° C. to 550° C. with a heating rate from 2 to 50° C. per minute; under pressure of 1 atm, in a reducing atmosphere of a gas mixture formed by H