摘要:
Disclosed is a method for the production of hydrogen from a H2S-containing gas stream also containing ammonia, comprising subjecting both gas stream to catalytic oxidative cracking of both the H2S and the NH3, so as to form H2, S2 and N2. In this method, preferably, an additional amount of oxygen is added as compared to the amount used for H2S catalytic oxidative cracking. Also, preferably, the contact time of the gas stream with the catalyst is increased. The catalyst preferably is provided as a single bed, and then preferably comprises iron and molybdenum supported by a carrier comprising aluminum. The preferred carrier is alumina. The iron and molybdenum preferably are in the form of sulfides.
摘要:
Disclosed is a catalyst suitable for the catalytic oxidative cracking of a H2S-containing gas stream, particularly in the event that the stream also contains methane and/or ammonia. The catalyst comprises iron and molybdenum supported by a carrier comprising aluminium. The carrier preferably is alumina. The iron and molybdenum preferably are in the form of sulphides. Also disclosed is a method for the production of hydrogen from a H2S-containing gas stream, comprising subjecting the gas stream to catalytic oxidative cracking so as to form H2 and S2, using a catalyst in accordance with any one of the preceding claims.
摘要:
A method for producing a thiometallate or selenometallate material is provided in which a first salt containing an anionic component selected from the group consisting of MoS42−, MoSe42−, WS42−, WSe42−, VS43−, and VSe43− and a second salt containing a cationic component comprising a metal in any non-zero oxidation state selected from the group consisting of Cu, Fe, Ag, Co, Mn, Re, Ru, Rh, Pd, Ir, Pt, B, Al, Ce, La, Pr, Sm, Eu, Yb, Lu, Dy, Ni, Zn, Bi, Sn are mixed under anaerobic conditions in an aqueous mixture at a temperature of from 50° C. to 150° C.
摘要:
A method for producing a thiometallate or selenometallate material is provided in which a first salt containing an anionic component selected from the group consisting of MoS42−, MoSe42−, WS42−, WSe42−, VS43−, and VSe43−, and a second salt containing a cationic component comprising a metal in any non-zero oxidation state selected from the group consisting of Fe, Ag, Co, Mn, Re, Ru, Rh, Pd, Ir, Pt, B, Al, Ce, La, Pr, Sm, Eu, Yb, Lu, Dy, Ni, Zn, Bi, Sn, Pb, Cd, Sb, Ge, Ga, In, Au, Hg are mixed under anaerobic conditions in an aqueous mixture at a temperature of from 15° C. to 150° C.
摘要:
The present invention provides a method for increasing hydrocarbon chain length. The method comprises providing a feedstock comprising fatty acids and/or fatty acid esters with hydrocarbon chain length below C23 into a reaction zone in which ketonisation is conducted in the presence of a hydrotreatment catalyst under hydrogen pressure. The obtained ketones have a hydrocarbon chain length of from C24 to C43. The present invention further provides a method for simultaneous production of base oil components and fuel components.
摘要:
A composition and method of making such a composition that has application in the hydroprocessing of hydrocarbon feedstocks. The method comprises selecting an organic additive by the use of a correlation model for predicting catalytic activity as a function of a physical property that is associated with the organic additive and incorporating the organic additive into a support material to provide the additive impregnated composition.
摘要:
An improved process for preparing a slurry catalyst for the upgrade of heavy oil feedstock is provided. In the process, high shear mixing is employed to generate an emulsion containing droplets of metal precursor in oil with droplet sizes ranging from 0.1 to 300 μm. The emulsion is subsequently sulfided with a sulfiding agent, or in-situ in a heavy oil feedstock to form a slurry catalyst. The in-situ sulfidation in heavy oil is under sufficient condition for the heavy oil feedstock to generate the sulfiding source needed for the sulfidation.
摘要:
A method of recovering unsupported fine catalyst from heavy oil comprises combining a slurry comprising unsupported fine catalyst in heavy oil with solvent to form a combined slurry-solvent stream. The combined slurry-solvent stream is filtered in a deoiling zone. A stream comprising unsupported fine catalyst and solvent is recovered from the deoiling zone. Unsupported fine catalyst is separated from the stream comprising unsupported fine catalyst and solvent. The deoiling zone can comprise a membrane that is rapidly displaced in a horizontal direction.
摘要:
The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The MMS catalyst is characterized as having a multi-phased structure comprising five phases: a molybdenum sulfide phase, a tungsten sulfide phase, a molybdenum tungsten sulfide phase, an active nickel phase, and a nickel sulfide phase.
摘要:
The present invention is directed to a composition comprising a solid material comprised of a first metal/metalloid comprised of a metal or metalloid selected from the group consisting of Cu, Fe, Ag, Co, Mn, Zr, Zn, Sn, Re, Rh, Ru, Pd, Ir, Pt, B, Al, Ce, La, Pb, Cd, Sb, Ge, Ga, In, Bi, and Au; and a second metal selected from molybdenum, tungsten, or vanadium, where the first metal/metalloid and the second metal form a bimetallic tetrathiometallate or a bimetallic tetraselenometallate with sulfur or with selenium. The solid material is comprised of particles and has a particle size distribution, where the mean particle size of the particle size distribution is from about 50 nm to about 5 μm.