摘要:
Disclosed is a process for producing C2+ hydrocarbons, and systems for implementing the process, that includes providing a reactant feed that includes methane and an oxygen containing gas to a first reaction zone, wherein the temperature of the reactant feed is less than 700 °C, contacting the reactant feed with a first catalyst capable of catalyzing an oxidative coupling of methane reaction (OCM) to produce a first product stream that includes C2+ hydrocarbons and heat, and contacting the first product stream with a second catalyst capable of catalyzing an OCM reaction to produce a second product stream that includes C2+ hydrocarbons, wherein the produced heat is at least partially used to heat the first product stream prior to or during contact with the second catalyst, wherein the amount of C2+ hydrocarbons in the second product stream is greater than the amount of C2+ hydrocarbons in the first product stream.
摘要:
Disclosed is a process for producing C2+ hydrocarbons, and systems for implementing the process, that includes providing a reactant feed that includes methane and an oxygen containing gas to a first reaction zone, wherein the temperature of the reactant feed is less than 700° C. contacting the reactant feed with a first catalyst capable of catalyzing an oxidative coupling of methane reaction (OCM) to produce a first product stream that includes C2+ hydrocarbons and heat, and contacting the first product stream with a second catalyst capable of catalyzing an OCM reaction to produce a second product stream that includes C2+ hydrocarbons, wherein the produced heat is at least partially used to heat the first product stream prior to or during contact with the second catalyst, wherein the amount of C2+ hydrocarbons in the second product stream is greater than the amount of C2+ hydrocarbons in the first product stream.
摘要:
Disclosed is a method for production of synthesis gas and ethylene by a combined oxidative coupling and dry reforming of methane process. Heat generated from the oxidative coupling of methane can be used to drive the endothermic dry reforming of methane reaction.
摘要:
The invention relates to a catalyst for catalytic reactors of which the outer shape is a helix with n blades, where n≥1 and is such that the stack void fraction percentage (SVFP) is between 75 % and 85 % and the surface area/volume ratio (S/V) is greater than 1000 m 2 /m 3 .
摘要:
Provided are the preparation of a metal lattice-doping catalyst in an amorphous molten state, and the process of catalyzing methane to prepare olefins, aromatics, and hydrogen using the catalyst under oxygen-free, continuous flowing conditions. Such a process has little coke deposition and realizes atom-economic conversion. Under the conditions encountered in a fixed bed reactor (i.e. reaction temperature: 750-1200 °C; reaction pressure: atmospheric pressure; the weight hourly space velocity of feed gas: 1000-30000 ml/g/h; and fixed bed), the conversion of methane is 8-50%. The selectivity of olefins is 30-90%. And the selectivity of aromatics is 10-70%.
摘要:
Provided are a selective hydrogenation catalyst exhibiting a superior reactivity and selectivity against an oxygen-containing polar functional group(s) in a compound having a hydrogenation reaction site(s) such as a carbon-carbon double bond and an oxygen-containing polar functional group(s) such as an epoxy bond; a method for producing such selective hydrogenation catalyst; and a method for selectively hydrogenating such compound using this type of selective hydrogenation catalyst. In a method for hydrogenating a compound having a hydrogenation reaction site(s) and an oxygen-containing polar functional groups(s), this compound is brought into contact with a hydrogen gas in a liquid phase under the presence of a selective hydrogenation catalyst with a silver component-cerium oxide complex being supported on a metal oxide support, the silver component-cerium oxide complex including silver component particles and a cerium oxide supported on the surfaces of such silver component particles. Thus, the oxygen atoms in the oxygen-containing polar functional group(s) can be selectively hydrogenated.
摘要:
The invention relates to a catalyst which is obtainable from a catalyst precursor comprising a catalytically active multimetal oxide which contains molybdenum and at least one further metal and is of the general formula (I) Mo 12 Bi a Fe b Co c Ni d Cr e X 1 f X 2 g O x ,in which the variables have the following meaning: X 1 = W, Sn, Mn, La, Ce, Ge, Ti, Zr, Hf, Nb, P, Si, Sb, Al, Cd and/or Mg; X 2 = Li, Na, K, Cs and/or Rb, a = 0.1 to 7, preferably 0.3 to 1.5; b = 0 to 5, preferably 2 to 4; c = 0 to 10, preferably 3 to 10; d = 0 to 10; e = 0 to 5, preferably 0.1 to 2; f = 0 to 24, preferably 0.1 to 2; g = 0 to 2, preferably 0.01 to 1; and x = a number which is determined by the valency and frequency of the elements in (I) that are different from oxygen, characterized in that the catalyst has the shape of a hollow cylinder, wherein the inner diameter is 0.2 to 0.8-times the outer diameter and the length is 0.5 to 2.5-times the outer diameter, and in that the catalyst precursor does not contain pore formers.
摘要翻译:本发明涉及可由包含催化活性多金属氧化物的催化剂前体获得的催化剂,所述催化活性多金属氧化物包含钼和至少一种其他金属并且具有通式(I)Mo 12 Bi a Fe b Co c Ni dCr eX 1 fX 2 gO x, 其中变量具有以下含义:X 1 = W,Sn,Mn,La,Ce,Ge,Ti,Zr,Hf,Nb,P,Si,Sb,Al,Cd和/或Mg; X 2 = Li,Na,K,Cs和/或Rb,a = 0.1至7,优选0.3至1.5; b = 0至5,优选2至4; c = 0至10,优选3至10; d = 0至10; e = 0-5,优选0.1-2; f = 0-24,优选0.1-2; g = 0-2,优选0.01-1; x =由(I)中的元素的价数和频率确定的与氧不同的数,其特征在于,催化剂具有中空圆柱体的形状,其中内径为0.2至0.8倍 外径和长度为外径的0.5至2.5倍,并且催化剂前体不含成孔剂。