摘要:
A method of carrying out the dehydrogenation of lower alkanes in a fixed-bed reactor containing a catalyst bed, the catalyst bed comprising (i) catalyst particles supporting a catalyst effective to promote said dehydrogenation and (ii) engineered inert diluent particles, where the method comprises passing the lower alkane in gaseous form through the catalyst bed, wherein the engineered inert diluent particles have a cross-sectional shape having two opposing convex edges joined by and intersecting two opposing concave edges, and a plurality of holes between said edges penetrating through the particle.
摘要:
L'invention concerne un catalyseur dont la phase active comprend de l'oxyde de fer, comprend avantageusement du platine, et est exempt d'éléments alcalins et alcalino-terreux, supportée sur alumine alpha. L'invention concerne également un procédé de déshydrogénation d'hydrocarbures insaturés mettant en œuvre un catalyseur dont la phase active comprend de l'oxyde de fer, comprend avantageusement du platine, et est exempt d'éléments alcalins et alcalino-terreux, supportée sur alumine alpha.
摘要:
本发明涉及一种乙苯脱氢制备苯乙烯的催化剂及其制备方法。以催化剂质量为100份计,包括如下组份:a)45-75份K 2 Fe 10 O 16 ;b)20-50份K 2 Fe 22 O 34 ;c)1〜12份的铈氧化物,以Ce 2 O 3 计;d)1〜10份的钼和/或钨氧化物,以MoO 3 和/或WO 3 计;e)1〜10份的钙和/或镁氧化物,以CaO和/或MgO计;其中K 2 Fe 10 O 16 与K 2 Fe 22 O 34 的质量比例为1.0~3.5:1。该催化剂有较好的抗积炭能力和抗还原能力,具有良好的活性和稳定性,且使用寿命较长。
摘要:
Die vorliegende Erfindung betrifft einen Katalysator, der dadurch gekennzeichnet ist, dass er a) mindestens eine Metallverbindung, welche aus einer Gruppe, bestehend aus Metallcarbid, - nitrid, -silicid, -phosphid und -sulfid oder Mischungen davon, gewählt wird, wobei das Metall aus der Gruppe, bestehend aus Molybdän, Wolfram, Tantal, Vanadium, Titan, Niob, Lanthan und Chrom, gewählt wird, sowie b) mindestens ein nicht Brönsted-saures Bindemittel, welches aus der Gruppe, bestehend aus AIPO 4 , Bentonit, AIN und N 4 Si 3 , gewählt wird, umfasst. Des Weiteren betrifft die vorliegende Erfindung ein Verfahren und eine Vorrichtung zur Herstellung von Olefinen aus C2-, C3- und C4-Alkanen unter Verwendung dieses Katalysators.
摘要:
The present invention relates to a process for the production of 1, 3 -butadiene which comprises the following phases : a) extracting, by means of extractive distillation, in an extraction section, an end-product containing 1, 3 -butadiene and a raffinate product, starting from mixtures of saturated and unsaturated compounds having from 2 to 10 carbon atoms in the chain; b) sending the raffinate product to a dehydrogenation section; c) dehydrogenating the raffinate product in the dehydrogenation section in the presence of a dehydrogenation catalyst and an inert product so as to form a reaction effluent containing 1,3- butadiene; d) recirculating the reaction effluent containing 1, 3 -butadiene directly to the extraction section after separating the incondensable compounds.
摘要:
A process for the production of propylene from a propane rich hydrocarbon source is presented. The process converts a propane rich stream and uses less equipment and energy for the separation and production of propylene. The process uses a non-noble metal catalyst and utilizes a continuous reactor-regeneration system to keep the process on line for longer periods between maintenance.
摘要:
Disclosed are dehydrogenation catalyst composites and methods of making the dehydrogenation catalyst composites. The dehydrogenation catalyst composites contain alumina, lithium oxide, alkaline earth metal oxide, chromium oxide, and sodium oxide. Also disclosed are methods of dehydrogenating a dehydrogenatable hydrocarbon involving contacting the dehydrogenatable hydrocarbon with a dehydrogenation catalyst composite containing alumina, lithium oxide, alkaline earth metal oxide, chromium oxide, and sodium oxide to provide a dehydrogenated hydrocarbon, such as an olefin.
摘要:
A catalyst comprising a dehydrogenation catalyst and a water gas shift co- catalyst can be used for the dehydrogenation of alkylaromatic hydrocarbons to alkenylaromatic hydrocarbons. For instance, the catalyst can be used for the dehydrogenation of ethylbenzene to styrene. The catalyst can include an iron compound, a potassium compound, and a cerium compound.