Patent application number | Description | Published |
20090030253 | Production of Aromatics from Aliphatics - In a process for converting a low carbon number aliphatic hydrocarbon to higher hydrocarbons including aromatic hydrocarbons, a feed containing the aliphatic hydrocarbon is contacted with a dehydrocyclization catalyst under conditions effective to convert the aliphatic hydrocarbon to aromatic hydrocarbons and produce an effluent stream comprising aromatic hydrocarbons and hydrogen. The dehydrocyclization catalyst comprises a metal or metal compound and a molecular sieve wherein the ratio of the amount of any Bronsted acid sites in the catalyst to the amount of said metal in the catalyst is less than 0.4 mol/mol of said metal. | 01-29-2009 |
20090281361 | Organic Compound Conversion Process - The present invention provides a process for conversion of feedstock comprising organic compounds to desirable conversion product at organic compound conversion conditions in the presence of catalyst comprising an acidic, porous crystalline material and having a Proton Density Index of greater than 1.0, for example, from greater than 1.0 to about 2.0, e.g. from about 1.01 to about 1.85. The acidic, porous crystalline material of the catalyst may comprise a porous, crystalline material or molecular sieve having the structure of zeolite Beta, an MWW structure type material, e.g. MCM-22, MCM-36, MCM-49, MCM-56, or a mixture thereof. | 11-12-2009 |
20090286670 | Catalyst Composition - The present invention provides an improved catalyst and a method for its manufacture. The catalyst comprises an acidic, porous crystalline material and has a Proton Density Index of greater than about 1.0, for example from greater than 1.0 to about 2.0, e.g. from about 1.01 to about 1.85. This catalyst may be used to effect conversion in chemical reactions, and is particularly useful in a process for selectively producing a monoalkylated aromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent under at least partial liquid phase conditions. The acidic, porous crystalline material of the catalyst may comprise an acidic, crystalline molecular sieve having the structure of zeolite Beta, an MWW structure type material, e.g. MCM-22, MCM-36, MCM-49 MCM-56, or a mixture thereof. | 11-19-2009 |
20100152513 | System And Method For Reducing Decomposition Byproducts In A Methanol To Olefin Reactor System - The invention relates to a feed vaporization and introduction system for an OTO reactor. The invention includes: means for vaporizing at least a portion of the feed; means for contacting the at least partially vaporized feed with a first catalyst comprising one or more metals from Groups 2, 3, and 4 of the Periodic Table and/or one or more metals in the Lanthanide and Actinide series. | 06-17-2010 |
20100152514 | Methods For Determining Efficacy Of Metal Oxide Co-Catalysts For Oxygenates-To-Olefins Reactions - The invention involves a process for converting an oxygenate-containing feed into an olefin-containing product comprising: (a) providing a co-catalyst oxide of a metal from Groups 2-4 of the Periodic Table of Elements, Lanthanides, Actinides, and combinations thereof, (b) contacting the metal oxide with nitromethane under conditions sufficient for the nitromethane to adsorb onto the metal oxide; (c) analyzing the nitromethane-adsorbed metal oxide using NMR to determine a basic site density of the metal oxide; (d) providing a catalyst system comprising a primary catalyst comprising aluminosilicates, aluminophosphates, silicoaluminophosphates, and metal-containing derivatives and combinations thereof, and the co-catalyst metal oxide whose basic site density is ≧0.085 mmol/g and whose BET surface area is ≧20 m | 06-17-2010 |
20100179363 | Oxygenate Conversion Catalyst System And Processes For Making And Using Same - The invention includes a method for impregnating a molecular sieve primary catalyst with an aromatic co-catalyst, the method comprising contacting the small pore molecular sieve primary catalyst having a porous framework structure with a combination of from at least 50 wt % to about 99.9 wt % of an aromatic co-catalyst and from about 0.1 wt % to less than 50 wt % of a polar impregnation agent containing one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, phosphorus, and boron, under conditions sufficient to impregnate the porous framework structure of the primary catalyst with the aromatic co-catalyst (and optionally also with the polar impregnation agent), thus forming an integrated catalyst system. Methods for converting oxygenates to olefins using said integrated catalyst system are also described herein. | 07-15-2010 |
20110021857 | Method And Apparatus For Regenerating Catalyst During Oxygenates To Olefins Reaction - Disclosed herein is a method of recovery of the activity of a molecular sieve catalyst following use of the catalyst in an OTO conversion process. This is achieved by a regeneration apparatus and a method of regenerating a molecular sieve catalyst, comprising two stages. In a pretreatment stage, the catalyst is pretreated under pretreatment conditions by heating the catalyst to a temperature of between 320° C. to 700° C. in an oxygen depleted medium for a residence time of between 1 minute to two hours; and, in a regeneration stage, the catalyst is regenerated under regeneration conditions by heating the catalyst at a temperature of between 200° C. to 700° C. in an oxidizing medium for a residence time of between 1 to 60 minutes. | 01-27-2011 |
20110054128 | Controlling Prime Olefin Ratio In An Oxygenates-To-Olefins Reaction - Disclosed herein is a method of controlling production of olefins in an oxygenates-to-olefins reaction by combining in a reactor methanol and a molecular sieve, a AlPO or SAPO in certain embodiments, under conditions to produce at least ethylene and propylene having a first ethylene/propylene ratio; adding to the reactor a first amount of a C | 03-03-2011 |