Abstract:
A method for the production of nitric acid, comprising a step of oxidation of ammonia in the presence of a catalyst, comprising a step of monitoring the temperature of said catalyst by at least one contactless infrared sensor.
Abstract:
A catalyst structure suitable for use in an ammonia oxidation process is described comprising a plurality of shaped catalyst units supported on one or more members in a spaced relationship that allows the structure to flex.
Abstract:
Die vorliegende Erfindung betrifft einen beschichteten keramischen Katalysator, der in der Beschichtung und im Träger katalytisch aktive Komponenten enthält.
Abstract:
Die Erfindung betrifft ein Verfahren zur Oxidation von Ammoniak, das dadurch gekennzeichnet ist, dass als Katalysator mit katalytisch aktiven Materialien beschichtete Raumkörper aus hochtemperaturstabilem Material, enthaltend eine Fe-Cr-Al-Legierung, einsetzt werden, sowie den dafür geeignete Katalysator selbst. Gegenstände der Erfindung sind weiterhin ein Verfahren und eine entsprechende Vorrichtung zur Herstellung von Salpetersäure.
Abstract:
The invention concerns a method for eliminating N 2 O during nitric acid production, which consists in using as catalysts three-dimensional bodies coated or filled with materials with catalytic effect.
Abstract:
Illustrations are provided on applications and usage of electrically activated catalysts (101). Methods are disclosed for preparing catalysts from nanomaterials. Processes and devices are described that utilize catalysts. The invention can also be applied to improve the performance of existing catalysts, to enhance the performance of substances by inducing or applying charge in nanostructured forms of substances, and to prepare novel devices. Example processes for hydrogen production are discussed. Finally, the invention can be utilized to engineer the thermal, structural, electrical, magnetic, electrochemical, optical, photonic, and other properties of nanoscale substances.
Abstract:
The catalyst is a mixed oxide system prepared by hydrothermal oxidation of gelatine mixture obtained by way of precipitation of metal hydroxide forms from solutions of their salts, which system comprises manganese, magnesium or aluminium or zinc or calcium oxides or a mixture thereof, and cerium oxide doted with an activator in amount of 0-0,5 %. The inventive catalyst may be used in processes of selective oxidation of ammonia with molecular oxygen. The catalyst is active and high selective with respect to N2O at temperatures 140-240 DEG C, and maintains its stable activity during the whole time of performing the process.
Abstract:
The invention concerns a method which consists in selectively destroying nitrous oxide at high temperature on catalysts consisting of refractory oxide agglomerates (alumina or zirconium) having intergranular porosity impregnated with a zirconium salt. The method is useful for treating gases in workshops producing nitric acid. The invention is also useful, using specific initiators, for treating gases rich in N>2
Abstract translation:本发明涉及一种方法,其包括在高温下选择性地破坏一氧化二氮的催化剂,其由具有浸渍锆盐的晶间孔隙的难熔氧化物附聚物(氧化铝或锆)组成。 该方法可用于处理生产硝酸的车间中的气体。 本发明也可用于使用特定的引发剂处理富含有机化合物的硝酸氧化产生的N 2 O 3的气体。
Abstract:
Honeycomb structure for ammonia conversion based on non-platinum catalyst, formed as a layer of prizm-like elements joined together along their lateral sides without clearances in which equivalent hydrolyc diameter of prizm-like element and altitude thereof equal accordingly 4-100 and 2-75 of hydrolyc diameters of honeycomb structure's channel. Honeycomb structure in which prizm-like element's basis, is triangle, tetrahedral or hexahedral figure. Honeycomb structure in which is made of materials with one of the following compositions: Fe2O3-92 and Cr2O3-8%; Fe2O3-89.5, ZrO2-5, MgO-5, ZnBaO-0.5%; Fe2O3-79, Al2O3 -20, MgO-1%; perovskit (Ca0.1La0.9MnO3)- 90. Al2O3-8, SiO2-2%.