Patent application number | Description | Published |
20080274034 | PROCESS FOR PREPARING MULTIMETALLIC ANIONIC CLAYS AND PRODUCTS THEREOF - Multimetallic anionic clays (MACs) are prepared using economical raw materials or reactants and a procedure for obtaining a series of multimetallic mixed oxides derived from the thermal decomposition of the MACs which comprises: (1) dissolving water-soluble bimetallic and/or trimetallic sources in water, (2) dispersing and homogenizing separate water-insoluble divalent and/or trivalent metal precursors with a high-speed stirrer in order to obtain small and reactive particles; depending on the nature of the water-insoluble divalent and/or trivalent metal precursors, this process can be adjusted to a desired pH, (3) adding the suspension obtained in (2) to solution (1) with the reaction medium still dispersed to facilitate solid particle's reduction/dissociation, and (4) afterwards the slurry is aged for several hours and finally dried. This process enables raw materials or reactants to be easily handled, and eliminates unit operations involving product washing and/or purification steps. | 11-06-2008 |
20100081566 | PROCESS FOR PREPARING MULTIMETALLIC ANIONIC CLAYS AND PRODUCTS THEREOF - Multimetallic anionic clays (MACs) are prepared using economical raw materials or reactants and a procedure for obtaining a series of multimetallic mixed oxides derived from the thermal decomposition of the MACs which comprises: (1) dissolving water-soluble bimetallic and/or trimetallic sources in water, (2) dispersing and homogenizing separate water-insoluble divalent and/or trivalent metal precursors with a high-speed stirrer in order to obtain small and reactive particles; depending on the nature of the water-insoluble divalent and/or trivalent metal precursors, this process can be adjusted to a desired pH, (3) adding the suspension obtained in (2) to solution (1) with the reaction medium still dispersed to facilitate solid particle's reduction/dissociation, and (4) afterwards the slurry is aged for several hours and finally dried. This process enables raw materials or reactants to be easily handled, and eliminates unit operations involving product washing and/or purification steps. | 04-01-2010 |
20130171058 | PROCESS FOR ALTERING THE PHYSICO-CHEMICAL PROPERTIES OF FAUJASITE Y-TYPE ZEOLITES - The present invention relates to a process for modifying the physical and chemical properties of Faujasite Y-type zeolites (FAU), mainly used as a base material of catalyst used in the Fluid Catalytic Cracking (FCC) process, for the interest of the oil refining industry, in which the conversion of oil heavy fractions into lighter fractions, with a higher commercial value, is carried out. | 07-04-2013 |
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 |
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 |
20150086471 | MULTIMETALLIC MIXED OXIDES, ITS PREPARATION AND USE FOR THE OXIDATIVE DEHYDROGENATION OF ETHANE FOR PRODUCING ETHYLENE - A layered multimetallic oxide catalyst having the formula | 03-26-2015 |
20150087505 | 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. | 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 |