Patent application number | Description | Published |
20080262233 | SYNTHESIS OF PREFFERED ISOMER FRACTIONS OF N, N-DIETHYLDECAHYDROQUINOLINIUM CATION - The present invention relates to a process for synthesizing trans-N,N-diethyldecahydroquinolinium cation or a mixture of a cis-N,N-diethyldecahydroquinolinium cation and a trans-N,N-diethyldecahydroquinolinium cation. | 10-23-2008 |
20080292543 | METHOD OF PREPARING MOLECULAR SIEVE SSZ-74 - A method of preparing a crystalline material, herein designated as SSZ-74, comprising contacting under crystallization conditions (1) a source of silicon oxide, (2) a source of another metal oxide, (3) fluoride ions, and (4) a structure directing agent comprising a hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium) dication. A method of preparing a crystalline material having a defined X-ray powder diffraction pattern, by (1) forming a reaction mixture having one or more metal oxides, one being silicon oxide, and a hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium) dication, (2) maintaining the reaction mixture at an elevated temperature until crystals are formed, (3) separating the crystalline material, and (4) optionally calcining the crystalline material. A method for preparing a crystalline material, comprising (1) forming a defined reaction mixture, (2) maintaining the reaction mixture under conditions where crystals are formed, (3) separating out the crystalline material, and (4) water-washing and drying the crystalline material such that it has a defined X-ray powder diffraction pattern. | 11-27-2008 |
20090060813 | MOLECULAR SIEVE SSZ-82 COMPOSITION OF MATTER AND SYNTHESIS THEREOF - The present invention is directed to a new crystalline molecular sieve designated SSZ-82, a method for preparing SSZ-82 using a 1,6-bis(N-cyclohexylpyrrolidinium)hexane dication as a structure directing agent, and uses for SSZ-82. | 03-05-2009 |
20110100872 | N-paraffin selective hydroconversion process using borosilicate ZSM-48 molecular sieves - The present invention is directed to processes using a borosilicate ZSM-48 as a catalyst for the selective hydroconversion of heavy normal paraffins into lighter normal paraffin products, with minimal formation of isoparaffins. The borosilicate ZSM-48 molecular sieve has a mole ratio of between 40 and 400 of silicon oxide to boron oxide, synthesized using novel structure directing agents. | 05-05-2011 |
20110105302 | METHOD FOR MAKING BOROSILICATE ZSM-48 MOLECULAR SIEVES - The present invention is directed to a borosilicate ZSM-48 molecular sieve having a mole ratio of between 40 and 400 of silicon oxide to boron oxide, synthesized using novel structure directing agents. Also disclosed are processes using a borosilicate ZSM-48 as a catalyst for the selective hydroconversion of heavy normal paraffins into lighter normal paraffin products, with minimal formation of isoparaffins. | 05-05-2011 |
20110118368 | PROCESS OF SYNTHESIS GAS CONVERSION TO LIQUID FUELS USING MIXTURE OF SYNTHESIS GAS CONVERSION CATALYST AND DUAL FUNCTIONALITY CATALYST - A process is disclosed for converting a feed comprising synthesis gas to liquid hydrocarbons within a single reactor at essentially common reaction conditions. The synthesis gas contacts a catalyst bed comprising a mixture of a synthesis gas conversion catalyst on a support containing an acidic component and a dual functionality catalyst including a hydrogenation component and a solid acid component. The hydrocarbons produced are liquid at about 0° C., contain at least 25% by volume C | 05-19-2011 |
20110123433 | METHOD FOR MAKING ALUMINOSILICATE ZSM-12 - An aluminosilicate ZSM-12 may be prepared de novo in a small crystalline form from a reaction mixture containing a source of silica and a source of alumina. A small crystalline form of aluminosilicate ZSM-12 may also be prepared from a small crystalline form of borosilicate ZSM-12 by replacement of boron in the borosilicate ZSM-12 framework with aluminum. The aluminosilicate ZSM-12 is useful as an isomerization selective catalyst in processes such as isomerization dewaxing hydrocarbon feedstocks. | 05-26-2011 |
20120260628 | TREATMENT OF COLD START ENGINE EXHAUST - A method of treating a cold-start engine exhaust gas stream comprising hydrocarbons and other pollutants, the method comprising: flowing the exhaust gas stream over a molecular sieve bed, the molecular sieve bed comprising an alkali metal cation-exchanged molecular sieve having intersecting 10- and 12-membered ring pore channels, to provide a first exhaust stream; flowing the first exhaust gas stream over a catalyst to convert any residual hydrocarbons and other pollutants contained in the first exhaust gas stream to innocuous products to provide a treated exhaust stream; and discharging the treated exhaust stream into the atmosphere. | 10-18-2012 |
20140072494 | Treatment of Cold Start Engine Exhaust - The present invention relates to a process for reducing cold start emissions in an exhaust gas stream by contacting the exhaust stream with a combination of molecular sieves comprising (1) a small pore crystalline molecular sieve or mixture of molecular sieves having pores no larger than 8 membered rings selected from the group consisting of SSZ-13, SSZ-16, SSZ-36, SSZ-39, SSZ-50, SSZ-52 and SSZ-73 and (2) a medium-large pore crystalline molecular sieve having pores at least as large as 10 membered rings selected from the group consisting of SSZ-26, SSZ-33, SSZ-64, zeolite Beta, CIT-1, CIT-6 and ITQ-4. | 03-13-2014 |