摘要:
A catalyst for the conversion of carbon monoxide which before reductive activation, has the chemical composition which corresponds to the formulaCu.sub.0.04-6 AlMg.sub.0.1-10.sup.O.sub.X,wherein x denotes the number of oxygen atoms required to maintain electroneutrality per formula unit; and wherein the intensity ratio between the x-ray diffraction lines of the spinels CuAl.sub.2 O.sub.4 and MgAl.sub.2 O.sub.4 at d=0.244 nm and copper oxide at d=0.232 nm, determined as the ratio of reflex heights is about 0.05 to 0.5.
摘要翻译:用于转化一氧化碳的催化剂,其在还原活化之前具有对应于式Cu0.04-6AlMg0.1-10OX的化学组成,其中x表示维持每个式单元的电中性所需的氧原子数; 并且其中d = 0.244nm处的尖晶石CuAl 2 O 4和MgAl 2 O 4的x射线衍射线与d = 0.232nm处的氧化铜之间的强度比确定为反射高度的比率为约0.05至0.5。
摘要:
A catalyst for the selective hydrogenation of polyunsaturated hydrocarbons which contain entirely or predominantly more than five carbon atoms, containing palladium with a promotor on a metal oxide support. The promotor is a metal from the subgroup IB of the periodic system (preferably silver) and the metal oxide support (TiO.sub.2 optionally mixed with CeO.sub.2 and/or ZrO.sub.2) is macroporous, the pore volume being about 0.2 to 0.4, preferably about 0.25 to 0.30 ml per g of carrier and the proportion of the macropores having a diameter of more than 14 nm being at least 65%.
摘要:
A catalyst for decreasing the content of nitrogen oxides in flue gases. The catalyst contains at least one of the metals titanium, zirconium, vanadium, tungsten, molybdenum, or cerium in the form of one or more of their oxides combined with a silicate with a three-layer structure (three-layer silicate) comprising acid-activated pyrophyllite. The crystalline layer structure of the acid-activated pyrophyllite is essentially retained, while being not yet X-ray amorphous. The acid activation increases the BET surface area at least 15% and preferably at least 50% in terms of the BET surface area of the pyrophyllite before acid activation. The atomic ratio of the silicon in the acid-activated pyrophyllite to the metal in the oxide is from 0.2 and 50 and preferably from 0.4 to 25.
摘要:
A catalyst is described based on crystalline aluminosilicates of the pentasil type, characterized in that it is constructed from primary crystallites with an average diameter of at least 0.01 μm and less than 0.1 μm, that are combined to at least 20% to agglomerates of 5 to 500 μm, in which the primary crystallites or agglomerates are bonded together by finely divided aluminum oxide, that its BET surface is 300 to 600 m2/g and its pore volume (determined according to mercury porosimetry) is 0.3 to 0.8 cm3/g, that it is present in H form and that the amount of finely divided aluminum oxide binder is 10 to 40 wt. %, referred to the total weight of the aluminosilicate, in which the finely divided aluminum oxide binder is used in the reaction charge as peptizable aluminum oxide hydrate, sodium aluminate being used as aluminum and alkali source, and primary synthesis of the crystalline aluminosilicate occurs without addition of acid. A method is also described for production of such a catalyst and its preferred applications.
摘要:
The invention describes a chromium-free catalyst for hydrogenation of organic compounds, especially organic compounds containing the carbonyl function, such as aldehydes, ketones, or carboxylic acids or their esters, to the corresponding alcohols wherein the catalysts is characterized by the following features:its oxide form corresponds to the compositionCu.sub.a Al.sub.b Zr.sub.c Mn.sub.d O.sub.xwherein the following relations apply:for the first embodiment:a>O; b>O; c.gtoreq.O; d>O; a>b/2; b>a/4; a>c; a>d;and for the second embodiment:a>O; b=a/40 to a/4; c.gtoreq.O; d>O; a>c; a=0.5 d to 0.95 dand x is the number of oxygen ions needed per formula unit for electrical neutrality.
摘要翻译:本发明描述了一种无铬催化剂,用于将有机化合物,特别是含有羰基官能团的有机化合物如醛,酮或羧酸或其酯氢化成相应的醇,其中催化剂的特征在于以下特征:其 氧化物形式对应于组成CuaAlbZrcMndOx,其中以下关系适用:对于第一实施方案:a> O; b> O; c> / = O; d> O; a> b / 2; b> a / 4; a> c a> d 并且对于第二实施例:a> O; b = a / 40到a / 4; c> / = O; d> O; a> c a = 0.5 d至0.95 d,x为电中性所需的每个配方单位所需的氧离子数。
摘要:
A catalyst based on crystalline aluminosilicates of the pentasil type, having an Si/Al atomic ratio of at least 10, has the structure of primary crystallites of a mean diameter of at least 0.1 micron and at most 0.9 micron, which crystallites are partially combined into agglomerates the primary crystallites and/or agglomerates being mutually joined by finely disperse alumina obtainable by hydrolysis of aluminum-organic compounds, the BET surface area of the catalyst being 300 to 600 m.sup.2 /g and its pore volume (determined by mercury porosimetry) being 0.3 to 0.8 cm.sup.3 /g.
摘要:
A process for decreasing the content of nitrogen oxides in flue gases. The process comprising contacting the flue gases with a catalyst. The catalyst contains at least one of the metals titanium, zirconium, vanadium, tungsten, molybdenum, or cerium in the form of one or more of their oxides combined with a silicate with a layer structure (layer silicate) comprising acid-activated kaolin. The crystalline layer structure of the acid-activated kaolin is essentially retained, while being not yet X-ray amorphous. The acid activation increases the BET surface area at least 15% and preferably at least 50% in terms of the BET surface area of the kaolin before acid activation. The atomic ratio of the silicon in the acid-activated kaolin to the metal in the oxide is from 0.2 and 50 and preferably from 0.4 to 25.
摘要:
A catalyst for lowering the nitrogen oxide content of flue gases contains as the active component an acid-activated layer silicate, in particular of the smectite type, whose layered structure is to a large extent intact after the acid treatment.
摘要:
A business application backend system, such as an Advanced Business Application Programming backend can receive and respond to representational state transfer (RESTful) service requests via both HTTP and Remote Function Call (RFC) protocols. In particular, the backend system extracts the RESTful service requests and fulfills the extracted requests using a protocol-independent resource controller. Related apparatus, systems, techniques and articles are also described.
摘要:
Particular embodiments described herein provide for an electronic device that can be configured to receive data in a data flow, extract a data visa from the data flow, wherein the data visa is related to the data, and determine a reputation of the data from the data visa. The data visa can include reputation determination information obtained by previous network elements in the data flow. In addition, the electronic device can update the data visa, and communicate the updated data visa and data to a next network element in the data flow.