Class / Patent application number | Description | Number of patent applications / Date published |
585656000 | Using acceptor, e.g., hydrogen-exchange disproportionation, etc. | 26 |
20100191031 | ADIABATIC REACTOR TO PRODUCE OLEFINS - Processes for production of olefins from hydrocarbon feedstocks are provided. In one aspect, the processes of the present invention utilize coils passing through a pyrolysis furnace to partially convert a hydrocarbon feedstock to olefins, followed by further conversion of the hydrocarbon feedstock in an adiabatic reactor. A portion of the coils in the pyrolysis furnace carry the hydrocarbon feedstock and the remainder carry steam only. After a selected period of time, the material flowing through the coils is switched. By flowing steam through the coils that had previously contained the hydrocarbon feedstock, on-line decoking can occur. In another aspect, a high temperature reactor is used to convert methane or natural gas to olefins. | 07-29-2010 |
20170233312 | FLUIDIZABLE CATALYST FOR OXIDATIVE DEHYDROGENATION OF ALKANES TO OLEFINS IN AN OXYGEN FREE ENVIRONMENT | 08-17-2017 |
585658000 | Elemental O or S acceptor with extraneous nonhydrocarbon agent, e.g., catalyst, etc. | 24 |
20090318743 | COMBINED CARBON DIOXIDE AND OXYGEN PROCESS FOR ETHYLBENZENE DEHYDROGENATION TO STYRENE - Processes for using a combination of carbon dioxide and oxygen in the dehydrogenation of hydrocarbons are provided. A hydrocarbon feedstock, carbon dioxide and oxygen are fed to an oxidative dehydrogenation reactor system containing one or more catalysts that promote dehydrogenation of the hydrocarbon feedstock to produce a dehydrogenated hydrocarbon product. The processes of the present invention may be used, for example, to produce styrene monomer by dehydrogenation of ethylbenzene using carbon dioxide and oxygen as oxidants. | 12-24-2009 |
20100030004 | Hybrid autothermal catalytic process for converting alkanes to alkenes and catalysts useful for same - The present invention relates to a thermally integrated multi-zone process for conversion of alkanes to their corresponding alkenes, involving endothermically converting an alkane to its corresponding alkene by soft oxidant conversion in an endothermic reaction zone, in the presence of a weak oxidant, a suitable catalyst, and heat, to produce an intermediate product gas comprising the corresponding alkene and hydrogen. The weak oxidant may be, for example, carbon dioxide. The hydrogen is then removed from the intermediate product gas by contacting the intermediate product gas, in an exothermic reaction zone, with different second catalyst, and oxygen, to combust the hydrogen and produce a heated product stream comprising the corresponding alkene, water and heat. Heat is recovered from the heated product stream and recycled back to the endothermic reaction zone, while the resulting cooled product stream comprising the corresponding alkene may be subjected to further reaction and/or processing. | 02-04-2010 |
20110152597 | CATALYTIC OXIDATIVE DEHYDROGENATION, AND MICROCHANNEL REACTORS FOR CATALYTIC OXIDATIVE DEHYDROGENATION - The invention provides methods of oxidative dehydrogenation (ODH). Conducting ODH in microchannels has unexpectedly been found to yield superior performance when compared to the same reactions at the same conditions in larger reactors. ODH methods employing a Mo—V—Mg—O catalyst is also described. Microchannel apparatus for conducting ODH is also disclosed. | 06-23-2011 |
20110245571 | Oxidative dehydrogenation of paraffins field of the invention - The present invention provides a process for the oxidative dehydrogenation of a paraffin such as ethane to the corresponding alkene such as ethylene in which the alkane is contacted with a bed of oxidative dehydrogenation catalyst having an enhanced labile oxygen content in the crystal structure on an inert support optionally with a regenerable metallic oxidant composition in the absence of a gaseous feed containing oxygen. | 10-06-2011 |
20120041247 | CATALYST FOR PRODUCING ALKENE, THE METHOD FOR PRODUCING THE SAME AND THE METHOD FOR PRODUCING ALKENE - The present invention relates to a catalyst for producing alkene using as a starting material alkane obtained by reducing an Mo—V—Te composite oxide having a crystal structure and being represented by formula (1): | 02-16-2012 |
20120083641 | CATALYST FOR OXIDATIVE DEHYDROGENATION OF PROPANE TO PROPYLENE - The catalyst for oxidative dehydrogenation of propane to propylene includes vanadium and aluminum incorporated into the framework of a mesoporous support, viz., MCM-41, to form V—Al-MCM-41, and nickel impregnated onto the walls of the mesoporous support. Nickel loading is preferably in the range of 5 to 15% by weight of the catalyst. A process for the production of propylene from propane includes steps of placing the catalyst in a fixed bed reactor, introducing a flow of feedstock in a propane:oxygen:nitrogen ratio of about 6:6:88 by volume, maintaining the reactor at atmospheric pressure and in a temperature range of about 400 to 550° C., collecting the product, and separating propylene from the product. The process achieves propane conversion between about 6 to 22%, and a selectivity for propylene between about 22 and 70%, depending upon percent nickel content and temperature of the reaction. | 04-05-2012 |
20130072737 | Membrane-Supported Catalysts and the Process of Oxidative Dehydrogenation of Ethane Using the Same - The present invention provides a continuous process for the oxidative dehydrogenation of ethane to ethylene using a mixed oxide catalyst supported onto a ceramic membrane by supplying an oxygen containing gas (air or pure oxygen) and pure ethane to the opposite sides of the membrane, so that the paraffin and the oxygen do not directly mix in the reactor. | 03-21-2013 |
20130165728 | NANOWIRE CATALYSTS AND METHODS FOR THEIR USE AND PREPARATION - Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2 hydrocarbons. Related methods for use and manufacture of the same are also disclosed. | 06-27-2013 |
20130317272 | Manganese Oxides and Their Use in the Oxidation of Alkanes - Catalytic structures are provided comprising octahedral tunnel lattice manganese oxides ion-exchanged with metal cations or mixtures thereof. The structures are useful as catalysts for the oxidation of alkanes and may be prepared by treating layered manganese oxide under highly acidic conditions, optionally drying the treated product, and subjecting it to ion exchange. | 11-28-2013 |
20140094635 | METAL CATALYST COMPOSITION - Embodiments include metal catalyst compositions and methods of forming metal catalyst compositions. A metal catalyst composition can be formed by (a) contacting a supported metal catalyst surface with a ligand-containing alumina precursor for a predetermined contact time to form an intermediate layer having a plurality of aluminum moieties that chemically bond to the supported metal catalyst surface, optionally, contacting the intermediate layer of aluminum moieties with an inert gas for a predetermined intermediate stripping time to remove unreacted ligand-containing alumina precursors, (b) reacting the aluminum moieties with an oxidation reagent for a predetermined reaction time to convert at least a portion of the ligands to hydroxyl groups thereby forming a layer of the alumina over-coat on the supported metal catalyst surface or a previously formed layer of the alumina over-coat, (c) contacting the layer of the alumina over-coat formed in step (b) with an inert gas for a predetermined stripping time to remove unreacted oxidation reagents, replicating the sequential steps (a-c) to form an additional layer of the alumina over-coat, and (d) activating the alumina over-coat, after forming a final layer of the alumina over-coat, to form a plurality of pores therein. | 04-03-2014 |
20140114109 | Oxidative dehydrogenation of ethane to ethylene and preparation of multimetallic mixed oxide catalyst for such process - Oxidative dehydrogenation of light paraffins, such as ethane at moderate temperatures (<500° C.) to produce ethylene without the formation of side products such as acetic acid and/or other oxygenated hydrocarbons is achieved using tellurium-free, multimetallic catalysts possessing orthorhombic M1 phase and other crystalline structures that have an important role for obtaining high performance catalysts for the oxidative dehydrogenation of ethane to ethylene. Such catalysts are prepared using thermal and hydrothermal methods. | 04-24-2014 |
20140128653 | Catalyst for Selective Dehydrogenation / Oxidative Dehydrogenation Reactions and Process for the Preparation Thereof - The present invention provides a process and catalyst for the direct and selective conversion of ethane to ethylene. The process provides a direct single step vapor phase selective dehydrogenation/oxidative dehydrogenation of ethane to ethylene over Mo supported nanocrystalline TiO | 05-08-2014 |
20140200383 | FORMING ETHYLENE - Form ethylene via a method that includes vaporizing elemental sulfur, providing a metal sulfide catalyst, and contacting the metal sulfide catalyst with a mixture of methane and the vaporized elemental sulfur to form ethylene. The mixture has a methane to sulfur molar ratio greater than 1.2:1.0. | 07-17-2014 |
20140275685 | MULTIMETALLIC MIXED OXIDES, ITS PREPARATION AND USE FOR THE OXIDATIVE DEHYDROGENATION OF ETHANE FOR PRODUCING ETHYLENE - A layered multimetallic mixed oxide (LMMO) is characterized by one or more diffraction peaks at 5<2θ<15, preferably between 10<2θ<15. The catalysts can be represented by the general formula: | 09-18-2014 |
20140371503 | SINGLE STAGE REACTOR SYSTEM WITH OXIDATIVE PREHEAT FOR DEHYDROGENATION OF HYDROCARBONS - A single stage dehydrogenation reactor system including a charge heater and one or more reactors is described. The hydrocarbon feed is combined with hydrogen and heated in a charge heater to a temperature lower than the dehydrogenation temperature to avoid thermal cracking. Before entering the dehydrogenation reactors, oxygen is added. The oxidative preheat then takes place in the presence of the dual functional catalyst which has dehydrogenation and selective oxidation activities. The oxygen selectively burns hydrogen and raises the reaction temperature, and the dehydrogenation reaction then occurs. | 12-18-2014 |
20140371504 | FLUIDIZED CATALYST CIRCULATION REACTOR FOR PARAFFIN OXYDATIVE DEHYDROGENATION - A process of oxidative dehydrogenation in a fluidized riser reactor is described. Hydrocarbon feed and catalyst are fed to the bottom of the fluidized riser reactor. Part of the hydrogen produced in the dehydrogenation reaction is oxidized using oxygen introduced into the riser reactor through oxygen injection ports to produce the heat required for the dehydrogenation reaction. | 12-18-2014 |
20150087875 | NANOWIRE CATALYSTS AND METHODS FOR THEIR USE AND PREPARATION - Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2 hydrocarbons. Related methods for use and manufacture of the same are also disclosed. | 03-26-2015 |
20150112109 | MULTIMETALLIC MIXED OXIDES, ITS PREPARATION AND USE FOR THE OXIDATIVE DEHYDROGENATION OF ETHANE FOR PRODUCING ETHYLENE - A layered multimetallic mixed oxide (LMMO) is characterized by one or more diffraction peaks at 5<2θ<15, preferably between 10<2θ<15. The catalysts can be represented by the general formula: | 04-23-2015 |
20150119622 | CATALYST FOR ALKANE OXIDATIVE DEHYDROGENATION AND/OR ALKENE OXIDATION - The invention relates to a process for treating a catalyst for alkane oxidative dehydrogenation and/or alkene oxidation, which catalyst is a mixed metal oxide catalyst containing molybdenum, vanadium and niobium, wherein the process comprises: contacting the catalyst with a gas mixture comprising an inert gas and oxygen (02), wherein the amount of oxygen is of from 10 to less than 10,000 parts per million by volume (ppmv), based on the total volume of the gas mixture, at an elevated temperature. | 04-30-2015 |
20150141727 | INHERENTLY SAFE ODH OPERATION - In the operation of an oxidative dehydrogenation (ODH) process, it is desirable to remove oxygen in the product stream for a number of reasons, including to reduce oxidation of the product. This may be achieved by having several pre-reactors upstream of the main reactor having a catalyst system containing labile oxygen. The feed passes through one or more reactors saturated with labile oxygen. When the labile oxygen is consumed through a valve system, the pre-reactor accepts product from the main reactor and complexes reactive oxygen in the product stream until the catalyst system is saturated with labile oxygen. Then the reactor becomes a pre-reactor and another pre-reactor becomes a scavenger. | 05-21-2015 |
20150328623 | Catalyst For Production Of Butadiene, Process For Producing The Catalyst, And Process For Producing Butadiene Using The Catalyst - A catalyst for producing butadiene using n-butene as a raw material, a process for producing the same and a process for producing butadiene using the catalyst are provided, and specifically, a catalyst for producing butadiene by gas-phase contact oxidative dehydrogenation of n-butene, which is capable of stably producing butadiene in a high yield from the beginning of the reaction, a process for producing the same and a process for producing butadiene, in which the catalyst is a shaped catalyst containing a complex metal oxide having molybdenum as an essential ingredient, wherein the pore volume of macropores is 80% or more, more preferably 90% or more, based on the total pore volume, are provided. | 11-19-2015 |
20160038922 | CATALYST FOR ALKANE OXIDATIVE DEHYDROGENATION AND/OR ALKENE OXIDATION - The invention relates to a process for treating a catalyst for alkane oxidative dehydrogenation and/or alkene oxidation, which catalyst is a mixed metal oxide catalyst containing molybdenum, vanadium and niobium, wherein the process comprises: contacting, during a period of time from 30 minutes to shorter than 5 hours, the catalyst with a gas mixture comprising an inert gas and oxygen (O | 02-11-2016 |
20160074844 | CATALYSTS FOR NATURAL GAS PROCESSES - Catalysts, catalytic forms and formulations, and catalytic methods are provided. The catalysts and catalytic forms and formulations are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane. Related methods for use and manufacture of the same are also disclosed. | 03-17-2016 |
20180021760 | CONTROLLED PRESSURE HYDROTHERMAL TREATMENT OF ODH CATALYST | 01-25-2018 |