摘要:
Oxidic composition consisting essentially of oxidic forms of a first metal, a second metal, and optionally a third metal, the first metal being either Fe or Zn and being present in the composition in an amount of from about 5 to about 80 wt %, the second metal being Al and being present in the composition in an amount of from about 5 to about 80 wt %, the third metal being selected from the group consisting of Mo, W, Ce, and V, and being present in an amount of from 0 to about 17 wt %—all weight percentages calculated as oxides and based on the weight of the oxidic composition, the oxidic composition being obtainable by (a) preparing a physical mixture comprising solid compounds of the first, the second, and the optional third metal, (b) optionally aging the physical mixture, without anionic clay being formed, and (c) calcining the mixture. This composition is suitable for use in FCC processes for the reduction of SOx emissions from the regenerator and for the production of sulphur-lean fuels and has only a minimised influence on the zeolite's hydrothermal stability.
摘要:
A combined process for the conversion of solid starting particles into solid intermediate particles and reducing the median diameter of the intermediate particles to obtain product particles. This process involves flowing a suspension of starting particles through a series of at least two conversion vessels, thereby converting at least part of the starting particles into intermediate particles, adding a supercritical fluid to one or more of the conversion vessels, thereby forming a supercritical suspension, and releasing pressure from the supercritical suspension, thereby expanding the suspension and converting the intermediate particles into product particles.
摘要:
The invention relates to a catalyst composition comprising anionic clay, lanthanum (hydr)oxide carbonate, and cerium oxide. This composition can suitably be used in FCC for the reduction of NOx and/or SOx emissions, the reduction of the S and/or N-content in fuels, and as a metal trap. The composition can be prepared by forming a precipitate from a solution comprising a divalent metal salt, a trivalent metal salt, a lanthanum salt, and a cerium salt, calcining the precipitate at 200-800° C., and rehydrating the calcined precipitate in the presence of a carbonate source to form a composition comprising anionic clay, lanthanum (hydr)oxide carbonate, and cerium oxide.
摘要翻译:本发明涉及包含阴离子粘土,氧化镧(hydr),碳酸氧化铈和氧化铈的催化剂组合物。 该组合物可以适当地用于FCC中以减少NO x和/或SO x x排放,降低燃料中S和/或N含量,以及 作为金属陷阱。 该组合物可以通过从包含二价金属盐,三价金属盐,镧盐和铈盐的溶液中形成沉淀物来制备,在200-800℃煅烧沉淀物,并将煅烧后的沉淀物再水化 存在碳酸盐源以形成包含阴离子粘土,氧化镧(hydr),碳酸氧化铈和氧化铈的组合物。
摘要:
The present invention pertains to a quasi-crystalline boehmite containing additive in a homogeneously dispersed state. Suitable additives are compounds containing elements selected from the group of alkaline earth metals, alkaline metals, rare earth metals, transition metals, actinides, silicon, gallium, boron, titanium, and phosphorus. Said QCBs according to the invention may be prepared in several ways. In general, a quasi-crystalline boehmite precursor and an additive are converted to a quasi-crystalline boehmite containing the additive in a homogeneously dispersed state.
摘要:
The invention comprises a catalyst composition comprising a pentasil type of zeolite, one or more solid acidic promoters, an additional material selected from the group consisting of an anionic clay, smectite clay, and thermally or chemically modified clay, and optionally a filler and/or binder, methods for making the catalyst composition and a process for using the catalyst in the manufacture of olefins.
摘要:
The present invention relates to a process for the preparation of doped pentasil-type zeolite, which process comprises the steps of: a) preparing an aqueous precursor mixture from a silicon source, an aluminium source, and doped non-zeolitic seeds; and b) thermally treating the precursor mixture to form a doped pentasil-type zeolite. The term “non-zeolitic seeds” includes seeds made from materials selected from the group consisting of (i) X-ray amorphous materials, (ii) milled crystalline materials, such as milled zeolites, that have a relative crystallinity of not more than 75%, and (iii) crystalline materials other than zeolites, such as clays (e,g, bentonite and kaolin) and (low) crystalline aluminas.
摘要:
A method for performing a Fischer-Tropsch process using as a catalyst (precursor) an iron-containing layered material selected from the group consisting of layered materials in which iron is present in the layered structure as divalent and/or trivalent metal (group 1), iron-doped layered materials (group 2), calcined iron-doped layered materials (group 3), and calcined layered materials in which iron is present in the layered structure as divalent metal (group 4). The term “layered material” includes anionic clays, layered hydroxy salts, cationic clays, and cationic layered materials.
摘要:
The present invention is directed to a process for the preparation of crystalline anionic clay-containing bodies from sources comprising an aluminum source and a magnesium source comprising the steps of: a) preparing a precursor mixture, b) shaping the precursor mixture to obtain shaped- bodies, c) optionally thermally treating the shaped bodies, and d) aging to obtain crystalline anionic clay-containing bodies. The quintessence of the present invention is that the bodies are shaped prior to the forming of the crystalline anionic clay in said bodies. This results in very attrition resistant bodies, without the need to add a binder material.
摘要:
A composition of matter is described herein that can be subjected to pyrolysis and converted into a bio-oil. The composition comprises an intimate mixture of a particulate solid biomass material and a carbonaceous material. The carbonaceous material acts as a reducing agent during the pyrolysis reaction. The composition of matter produces bio-oil in a greater yield than prior art processes. The bio-oil is of improved quality, as evidenced by its low TAN value.
摘要:
A process is disclosed for making a biomass susceptible to depolymerization or liquefaction under mild conditions. The process comprises introducing into the biomass a material susceptible to the absorption of electro-magnetic radiation to form a radiation absorbent biomass. The radiation absorbent biomass is subjected to electro-magnetic radiation to form an activated biomass.