摘要:
A catalyst composition comprising: (i) a support; (ii) a first component comprising at least one metal component selected from Group 1 and Group 2 of the Periodic Table of Elements; and (iii) a second component comprising at least one metal component selected from Groups 6 to 10 of the Periodic Table of Elements, wherein the catalyst composition exhibits an oxygen chemisorption of greater than 50%.
摘要:
A catalysed soot filter comprising an oxidation catalyst for treating carbon monoxide (CO) and hydrocarbons (HCs) in exhaust gas from a compression ignition engine disposed on a filtering substrate, wherein the oxidation catalyst comprises: a platinum group metal (PGM) component selected from the group consisting of a platinum (Pt) component, a palladium (Pd) component and a combination thereof; an alkaline earth metal component; a support material comprising a modified alumina incorporating a heteroatom component.
摘要:
A dehydrogenation process for the dehydrogenation of at least one dehydrogenatable hydrocarbon, the process comprising contacting a feed comprising the at least one dehydrogenatable hydrocarbon under dehydrogenation conditions with a catalyst composition comprising a support and at least one dehydrogenation component wherein said conditions include a temperature of from 400° C. to 750° C. and a pressure of at least 50 psig (345 kPag).
摘要:
An exhaust gas purification catalyst apparatus, which is superior in oxidation performance of, in particular, nitrogen monoxide, among hydrocarbons, carbon monoxide, nitrogen oxides and particulate components such as soot, included in exhaust gas from a lean burn engine, and combustion performance of light oil. The exhaust gas purification apparatus arranged with an oxidation catalyst (DOC) comprising a noble metal component for oxidizing carbon monoxide, hydrocarbons, in particular, nitrogen monoxide among nitrogen oxides, and for combusting light oil, a catalyzed soot filter (CSF) including a noble metal component for collecting a particulate component such as soot and removing by combustion (oxidation). The oxidation catalyst (DOC) has a catalyst layer where platinum (Pt), palladium (Pd) and barium oxide (BaO) are supported on alumina (Al2O3) having a pore size of 12 to 120 nm, and ratio of platinum and palladium is 1:1 to 11:2 in weight equivalent.
摘要翻译:一种废气净化催化剂装置,其特征在于一氧化氮在烃类,一氧化碳,氮氧化物中的氧化性能以及来自稀燃燃烧发动机的排气中所含的烟灰等微粒组分,以及燃烧性能 轻油。 排气净化装置配置有氧化催化剂(DOC),其包含用于氧化一氧化碳的贵金属成分,特别是氮氧化物中的一氧化碳,以及用于燃烧轻质油的催化烟尘过滤器(CSF) 用于收集诸如烟灰的颗粒组分并通过燃烧(氧化)除去的金属组分。 氧化催化剂(DOC)具有催化剂层,其中铂(Pt),钯(Pd)和氧化钡(BaO)负载在孔径为12〜120nm的氧化铝(Al 2 O 3)上,铂和钯的比例为 1:1至11:2,重量当量。
摘要:
A supported precious metal catalyst for the high-temperature combustion of a hydrocarbon includes 1-10% by weight in total of one or more precious metals on a refractory metal oxide support material, and 1-20% by weight in total of one or more stabilizing metals selected from rare earths and Groups IA, IIA, and IIIA of the periodic table of the elements, wherein at least part of the precious metal is present as a mixed metal oxide with one or more of the stabilizing metals.
摘要:
Described is a catalyst comprising a substrate and a catalyst coating of two or more layers: (a) a first layer comprising Pd and Rh on the substrate; and (b) a second layer comprising Pt and/or Pd on the first layer; these layers each further comprising: one or more particulate support materials; one or more oxygen storage component (OSC) materials; and one or more nitrogen oxide storage materials comprising one or more elements selected from the group of alkali and/or alkaline earth metals, wherein the total amount of alkali and alkaline earth metals ranges from 0.18 to 2.0 g/in3 calculated as the respective alkali metal oxides M2O and alkaline earth metal oxides MO. Also described is a method for the production of a catalyst, as well as a process for the treatment of a gas stream, in particular of an exhaust gas stream resulting from an internal combustion engine.
摘要翻译:描述了一种催化剂,其包括基材和两层或更多层的催化剂涂层:(a)在基材上包含Pd和Rh的第一层; 和(b)在第一层上包含Pt和/或Pd的第二层; 这些层还包括:一种或多种颗粒状载体材料; 一种或多种储氧组分(OSC); 和一种或多种氮氧化物储存材料,其包含选自碱金属和/或碱土金属的一种或多种元素,其中碱金属和碱土金属的总量为0.18至2.0g / in 3,其计算为各自的碱金属 氧化物M2O和碱土金属氧化物MO。 还描述了一种用于生产催化剂的方法,以及用于处理气流,特别是由内燃机产生的废气流的方法。
摘要:
The present invention relates to a method for producing a shell catalyst that is suitable for producing vinyl acetate monomer (VAM). The present invention also relates to a shell catalyst that can be obtained by the method according to the invention as well as the use of the shell catalyst according to the invention for producing VAM.
摘要:
[RhxMgyAlw(OH)2](3x+2y+3w−2)+(A2−)(3x+2y+3w−2)/2,k H2) (I) Hydrotalcite-like compound of the formula (I): catalyst synthesis process involving such a compound, and the use of this catalyst for hydrocarbons reforming and for ethanol reforming.
摘要:
Disclosed are alumina materials including a barium sulfate, catalyst or adsorbent using the same, in particular, catalyst for exhaust gas purification superior in NOx purification performance, suitable as a catalyst for purifying harmful substances included in exhaust gas discharged from an internal combustion engine of a gasoline vehicle, a diesel vehicle. An alumina material containing a barium sulfate in an amount of 5 to 70% by mass to alumina, wherein average particle size of barium sulfate dispersing in the alumina material is 4 μm or smaller, average particle size of alumina is 50 μm or smaller, and BET specific surface area of the alumina material is 20 to 250 m2/g; a catalyst for exhaust gas purification using the alumina material including a barium sulfate. It is preferable that the alumina material including a barium sulfate is coated onto an integrated structure-type carrier, as a catalyst layer.
摘要:
Provided is a method for purifying exhaust gas discharged from an internal combustion engine of a vehicle, using an exhaust gas purifying catalyst including a composite oxide represented by the following general formula AO.x(B2-yCyO3-α), wherein A represents an element selected from monovalent elements, divalent elements and lanthanides; B represents a trivalent element; and C represents a noble metal; x represents an integer of 1; y represents an atomic ratio satisfying the following relation: 0