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Chemistry Of Hydrocarbon Compounds > Aromatic Compound Synthesis > By Isomerization > Using Metal Oxide- Or Sulfide-containing Catalyst > Crystalline Aluminosilicate Crystalline AluminosilicateCrystalline Aluminosilicate patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.01/04/07 - 20070004948 - Selective aromatics isomerization process A process for isomerizing xylenes while retaining ethylbenzene in a C8-aromatics stream in liquid phase uses a gallium-substituted pentasil zeolite in the absence of hydrogen. ... 01/04/07 - 20070004947 - Two-stage aromatics isomerization process This invention is drawn to a process for isomerizing a non-equilibrium mixture of alkylaromatics in two sequential zones, the first zone operating in the absence of hydrogen using a platinum-free catalyst and the second zone using a catalyst comprising a molecular sieve and a platinum-group metal component to obtain improved ... 12/21/06 - 20060287563 - Process for making xylene isomer using a deheptanizer with a side draw recycle In processes for recovering one or more xylene isomers and isomerizing the remaining isomers for recycle, the isomerate is distilled to provide a toluene-containing overhead, a mid-boiling fraction containing C8 aromatics and a bottoms fraction containing C8 aromatics and C9+ aromatics. The mid-boiling fraction is recycled to the unit for ... 06/08/06 - 20060122445 - Process for the preparation of 2,6-dimethylnaphthalene A highly selective process is described for preparing 2,6-dimethylnaphthalene which comprises reacting a naphthalene hydrocarbon selected from naphthalene, methylnaphthalenes, dimethylnaphthalenes, trimethylnaphthalenes, polymethylnaphthalenes, and/or their mixtures with one or more benzene hydrocarbons selected from benzene, toluene, xylenes, trimethylbenzenes, tetramethylbenzenes, pentamethylbenzene and/or hexamethylbenzene, under at least partially liquid phase conditions and in ... 12/15/05 - 20050277796 - Process for c8 alkylaromatic isomerization A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al2 MTW-type zeolite that preferably is substantially free of mordenite. The catalyst may be bimetallic where the two metals are platinum and tin. ... 07/28/05 - 20050165265 - Process for producing para-xylene A process and a system for increasing para-xylene production from a C8 aromatic feedstream by coupling at least one xylene isomerization reactor with at least one pressure swing adsorption unit or temperature swing absorption unit to produce a product having a super-equilibrium para-xylene concentration. This product is then subjected to ... 06/30/05 - 20050143615 - Process and bimetallic catalyst for c8 alkylaromatic isomerization A process for isomerizing ethylbenzene into xylenes such as para-xylene using a bimetallic zeolitic catalyst system based on MTW-type zeolite is disclosed. Preferably the two metals are platinum and tin. The invention obtains a stable and improved yield of xylenes such as para-xylene without excess benzene production by dealkylation. The ... 06/30/05 - 20050143614 - Process and catalyst for c8 alkylaromatic isomerization A process for isomerizing ethylbenzene into paraxylene using a zeolitic catalyst system based on MTW-type zeolite that is substantially free of mordenite. The invention obtains an improved yield of paraxylene without excess benzene production by dealkylation. The zeolitic silica-to-alumina ratio ranges from 20 to 45. Elimination of mordenite in the ... 06/16/05 - 20050131261 - Process and catalysts for c8 alkylaromatic isomerization A liquid or partially liquid phase process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene uses a zeolitic catalyst system preferably based on zeolite beta and on pentasil-type zeolite. The invention obtains an improved yield of para-xylene from the mixture relative to prior art processes in a more economical ... ### FreshPatents.com Support |