摘要:
The invention concerns a process for upgrading lower quality carbonaceous feedstock using a slurry catalyst composition. The use of particular organometallic compounds as precursors for the dispersed active catalyst allows for reduced coke formation.
摘要:
The present invention is directed, at least in part, to a process for improving the efficiency of a photocatalyst (a semiconductor photocatalyst) by tethering (depositing) a metal (e.g., metal ions of a late transition metal, such as nickel) to the semiconductor (photocatalyst) surface through the use of an organic ligand. More specifically, 1,2-ethanedithiol (EDT) functions as an excellent molecular linker (organic ligand) to attach a transition metal complex (e.g., nickel (Ni 2+ ions)) to the semiconductor surface, which can be in the form of a cadmium sulfide surface. The photocatalyst has particular utility in generating hydrogen from H 2 S.
摘要:
A process for slurry hydrocracking catalyst recovery is described. In one embodiment, the process includes separating effluent from a slurry hydrocracking zone into a first portion comprising solvent and clarified pitch and a second portion comprising pitch and catalyst. The second portion is contacted with an acid to leach the catalyst out of the pitch forming an aqueous solution and pitch residue. The aqueous solution is contacted with an anion to form an insoluble salt which is the catalyst.
摘要:
The present invention relates to a method of making a chemical compound comprising nickel, aluminum, oxygen and sulfur having a general formula Ni2xAl2O2x+3−zSz, wherein 0.5≦̸x≦̸3 and 0≦̸z≦̸2x. The material is effective for the removal of S-compounds from gaseous streams, effective for catalyzing a water gas shift reaction and suppresses the formation of carbon monoxide and hydrogen under conditions where a water gas shift reaction is catalyzed.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Oxidgemisches enthaltend wenigstens eine Verbindung der allgemeinen Formel (1) Fe x (M 1 O y ) z und wenigstens eine Verbindung der allgemeinen Formel (II) M 1 m O n , ein solches Oxidgemisch, die Verwendung dieses Oxidgemisches als Katalysator bei der Herstellung von Formaldehyd durch Oxidation von Methanol, sowie ein Verfahren zur Herstellung von Formaldehyd durch Oxidation von Methanol, dadurch gekennzeichnet, dass ein solches Oxidgemisch als Katalysator eingesetzt wird. M 1 ist hierbei ein Metall ausgewählt aus der Gruppe bestehend aus Mo, V, Cu, Cr, Co, P, Si, B, S, Na und Mischungen davon.
摘要翻译:制备至少含有金属氧化物(I)和至少金属氧化物(II)的氧化物混合物包括:(a)在溶剂中提供至少含有铁和金属阳离子的化合物溶液; (b)通过沉淀步骤(a)中产生的溶液的化合物来生产氧化物混合物; (c)分离氧化物混合物; 和(d)在含氧气体中在80-550℃煅烧氧化物混合物,其中至少一种化合物(III)由步骤(a)中使用的化合物,(b)和/ 或(d)。 制备至少含有式(Fe x(M 1> O y)z)(I)的金属氧化物化合物和至少一种式(M 1> mO n)(II)的金属氧化物化合物)的氧化物混合物包括: (a)在溶剂中提供至少含有铁和金属阳离子的化合物溶液; (b)通过使步骤(a)中制备的溶液的化合物沉淀,制备含有(I)和(II)的氧化物混合物; (c)将步骤(b)中获得的氧化物混合物与溶剂分离; 和(d)在80-550℃下在含氧气体中煅烧步骤(c)中获得的氧化物混合物,其中至少由步骤(a)的化合物形成化合物(III),在 步骤(b)和/或(d)。 化合物(III)与化合物(I)和(II)不同。 氧与化合物(III)的摩尔比大于0.10。 M 1> Mo,V,Cu,Cr,Co,P,Si,B,S和/或Na; x,m:1-3; y:1-6; z:1-4; 和n:1-5。 其中x,y,z,m和n以化合物(I)和(II)分别具有电荷中性的方式选择。 还包括包含化合物(I)和(II)的氧化物混合物的独立权利要求。
摘要:
A highly efficient sulfide catalyst for reducing sulfur dioxide to elemental sulfur, which maximizes the selectively of elemental sulfur over byproducts and has a high conversion efficiency. Various feed stream contaminants, such as water vapor are well tolerated. Additonally, hydrogen, carbon monoxide, or hydrogen sulfides can be employed as the reducing gases while maintaining high conversion efficiency. This allows a much wider range of uses and higher level of feed stream contaminants than prior art catalysts.
摘要:
Contact of a crude feed with one or more catalysts produces a total product that includes a crude product. The crude feed has a residue content of at least 0.2 grams of residue per gram of crude feed. The crude product is a liquid mixture at 25 °C and 0.101 MPa. One or more properties of the crude product may be changed by at least 10% relative to the respective properties of the crude feed. In some embodiments, gas is produced during contact with one or more catalysts and the crude feed.
摘要:
The invention concerns a method whereby the gas to be treated is oxidised in sulphur by being contacted with an oxidation catalyst containing at least an oxysulphide of a metal selected among Fe, Cu, Ni, Co, Cr, Mo and W, associated with a silicon carbide support, by operating at temperatures, which are higher than the dew point of the sulphur formed in the treated gas and more specifically ranging between 180 DEG C and 500 DEG C. The invention is useful for eliminating H2S contained in gases of various origins with recovery of said H2S essentially in the form of sulphur.