摘要:
There are provided a catalyst composition for producing hydrocarbons and a method for producing hydrocarbons which exhibit a high CO conversion rate, generates minimal amount of gaseous components, and is also capable of efficiently obtaining, from a syngas, a gasoline fraction which is selective for and rich in the components having a high octane number, such as aromatic, naphthenic, olefinic and branched paraffinic hydrocarbons, by using a Fischer-Tropsch synthesis catalyst that contains at least one type of metal exhibiting activity in Fischer-Tropsch reaction and manganese carbonate and a zeolite serving as a solid acid.
摘要:
A catalyst for converting hydrocarbons, which catalyst contains, based on the weight of the catalyst, 1-60% by weight of a zeolite, 0.1-10% by weight of an assistant catalytic component, 5-98% by weight of a thermotolerant inorganic oxide, and 0-70% by weight of a clay in terms of the oxide. Said zeolite is a MFI-structured zeolite containing phosphor and transition metal(s) or a mixture of said zeolite and a macroporous zeolite, which comprises, based on the weight of the mixture, 75-100% by weight of said MFI-structured zeolite containing phosphor and transition metal(s) and 0-25% by weight of the macroporous zeolite. In terms of the mass of the oxide, said MFI-structured zeolite containing phosphor and transition metal(s) has the following anhydrous chemical formula: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(0-0.3)Na 2 O · (0.3-5.5)Al 2 O 3 · (1.0-10)P 2 O 5 · (0.7-15)M1 x O y · (0.01-5)M2 m O n · (0-10)RE 2 O 3 · (70-97)SiO 2 €ƒ€ƒ€ƒ€ƒ€ƒI or €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(0-0.3)Na 2 O · (0.3-5)Al 2 O 3 · (1.0-10)P 2 O 5 · (0.7-15)M p O q · (0-10)RE 2 O 3 · (70-98)SiO 2 €ƒ€ƒ€ƒ€ƒ€ƒII Said assistant catalytic component is one or more selected from the group consisting of the alkali earth metals, Group IVB metals, non-noble metals of Group VIII, and rare earth metals of the Periodic Table of the Elements. This catalyst has a higher ability to convert petroleum hydrocarbons and higher yields for propylene, ethylene, and light aromatics.
摘要:
The invention relates to a method for the non-oxidative dehydroaromatisation of aliphatic hydrocarbons by reacting an educt flow containing aliphatic hydrocarbons, in the presence of a catalyst containing at least one metalosillcate as a carrier, at least one element selected from the groups Mo, W and Re as active components and at least one additional transitional metal that is not a precious metal, as a dopant. The catalyst is regularly regenerated under non-oxidative conditions with hydrogen. Preferably, Fe, Ni, Cu and Co are used as additional transitional metals.
摘要:
To improve stability of catalytic performance, an aromatizing catalyst for converting lower hydrocarbons into aromatic compounds is regenerated. A regeneration process of the aromatizing catalyst according to the present invention includes the steps of: (a) reacting the aromatizing catalyst with a hydrogen gas in an atmosphere containing the hydrogen gas after using the aromatizing catalyst in an aromatizing reaction for converting lower hydrocarbons into aromatic compounds; (b) decreasing a temperature of the atmosphere containing the hydrogen gas reacted with the aromatizing catalyst, by supplying one of an inert gas and a reducing gas to the atmosphere; (c) reacting the aromatizing catalyst reacted with this inert gas, with an oxidizing gas; and (d) reacting the aromatizing catalyst reacted with the oxidizing gas, with a reducing gas. The reaction step between the aromatizing catalyst and hydrogen gas is conducted in a temperature region that is the same as the temperature of the aromatizing reaction. In the temperature decreasing step, an inert gas is supplied such that the temperature of the aromatizing catalyst becomes 400°C-550°C. In the step of reacting the aromatizing catalyst with an oxidizing gas, the temperature of an atmosphere, in which the aromatizing catalyst is reacted with the oxidizing gas, is set at 450°C-500°C.
摘要:
A process for converting ethylbenzene, by which ethylbenzene in a feedstocks containing C8 aromatic hydrocarbon is converted to benzene at a high degree of conversion is disclosed. The process for converting ethylbenzene comprises the step of bringing a C8 aromatic hydrocarbon mixed feedstocks containing ethylbenzene into contact with an acid type catalyst containing at least one metal selected from the group consisting of the metals belonging to Group VII and Group VIII in the presence of H 2 to convert ethylbenzene to benzene. The feedstocks contains C9-C10 aromatic hydrocarbons including ethyltoluene, and the ethyltoluene is converted to toluene together with the conversion of ethylbenzene.
摘要:
Low sulfur gasoline of relatively high octane-barrel value is produced from cracked, sulfur containing olefinic naphtas by hydrodesulfurization at low temperature and low space velocity over either a conventional catalyst, such as CoMo/A12O3, or a dual functional catalyst, such as CoMo ZSM-5/A12O3. This approach also minimizes the olefins/hydrogen sulfide re-combination frequently observed at high temperature. The process produces a gasoline having a reduced sulfur content with a less than 5 % change in motor octane number and a less than 10 % change in research octane number.
摘要:
This invention concerns a zeolite containing rare earth elements and possessing cocrystallization structure of ZSM-5 and ZSM-11, wherein, weight rate of crystal phase structure portion of ZSM-5 and ZSM-11 is from 0.1 to 10. Chemical composition of the prototype zeolite synthesized under anhydrous state is as follows: 0.1-1.0 Na2O, 0.01-1.0 RE2O3, Al2O3. 20-300 SiO2. X-ray diffraction spectral lines of the zeolite Na-type are shown in table 1. The zeolite possesses good acidic hydrothermal stability and anti-impurities contamination ability, and can be used as catalyst in varied hydrocarbon conversion processes.
摘要翻译:本发明涉及含有稀土元素并具有ZSM-5和ZSM-11的共晶结构的沸石,其中ZSM-5和ZSM-11的晶相结构部分的重量比为0.1-10。原型的化学组成 在无水状态下合成的沸石如下:0.1-1.0Na 2 O,0.01-1.0 RE 2 O 3,Al 2 O 3。 20-300SiO2。 Na型沸石的X射线衍射谱线示于表1中。该沸石具有良好的酸性水热稳定性和抗杂质污染能力,并且可用作各种烃转化过程中的催化剂。
摘要:
A tri-elemental catalyst on a support that includes a pentasil crystalline zeolite and is suitable for hydrocracking and hydrogenation of aromatics-containing petroleum hydrocarbon feedstocks such as hydrotreated cracked feedstock, virgin feedstock, vacuum distillate, middle distillate, mixtures thereof, and the like, is disclosed. The catalyst is suitable for hydrodesulfurization as well as hydrodenitrogenation, thus the feedstock can contain sulfur and nitrogen in addition to the aromatic components. Hydrocracking and aromatics hydrogenation of the petroleum hydrocarbon feedstocks is accomplished under a relatively wide range of process conditions in plural process zones using the tri-elemental catalyst that contains a catalytically active metal phase constituted by a Group VI-B element, a Group VIII first transition series element and a Group VIII second transition series element. In an upstream zone the catalytically active metal phase is supported on a titania-alumina support containing about 5% to about 30% by weight titania in the support. In a downstream zone the catalytically active metal phase is supported on a titania-alumina-pentasil crystalline zeolite support. The preferred pentasil crystalline zeolite is ZSM-5.