Class / Patent application number | Description | Number of patent applications / Date published |
549256000 | Preparing by oxidation | 26 |
20100087663 | POLYNARY METAL VANADIUM OXIDE PHOSPHATE - A novel polynary metal oxide phosphate of the general formula I | 04-08-2010 |
20100105926 | POLYNARY METAL OXIDE PHOSPHATE - A novel polynary metal oxide phosphate of the general formula I | 04-29-2010 |
20100105927 | POLYNARY VANADYL PYROPHOSPHATE - A novel polynary vanadyl pyrophosphate of the general formula I | 04-29-2010 |
20110257413 | CATALYST AND METHOD FOR PRODUCING MALEIC ANHYDRIDE - The invention relates to a catalyst molded body for preparing maleic anhydride by gas-phase oxidation of a hydrocarbon having at least four carbon atoms using a catalytically active composition contains vanadium, phosphorus and oxygen, where the shaped catalyst body has an essentially cylindrical body having a longitudinal axis, wherein the cylindrical body has at least two parallel internal holes which are essentially parallel to the cylinder axis of the body and go right through the body. The catalyst molded body has a large outer surface area, a lower pressure loss and sufficient mechanical stability. | 10-20-2011 |
20110257414 | CATALYST MOLDED BODIES AND METHOD FOR PRODUCING MALEIC ACID ANHYDRIDE - The catalytically active mass of a catalyst molded body comprises a multi-element oxide containing vanadium and phosphorus. The specific pore volume PV (in ml/g) of the catalyst molded body, the bulk density p of the catalyst molded body (in kg/l), the geometric surface area A | 10-20-2011 |
20120149919 | MALEIC ANHYDRIDE SYNTHESIS CATALYST PRECURSOR AND PROCESS FOR ITS PREPARATION - A process for preparing a vanadium, phosphorus, and oxygen comprising catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms, which comprises
| 06-14-2012 |
20150361022 | METHODS FOR THE VALORIZATION OF CARBOHYDRATES - There are provided methods for the valorization of carbohydrates. The methods comprise reacting a fluid comprising at least one carbohydrate with at least one metal catalyst or at least one metal catalytic system in a fluidized bed reactor so as to obtain at least one organic acid or a derivative thereof. | 12-17-2015 |
20160031788 | METHOD OF MANUFACTURING DICARBOXYLIC ACIDS AND DERIVATIVES FROM COMPOSITIONS COMPRISING KETOCARBOXYLIC ACIDS - A crude composition comprising a ketocarboxylic acid such as levulinic acid, derived from biomass in an aqueous phase comprising impurities, can be efficiently converted in high yield to the corresponding dicarboxylic acid, such as succinic acid, which can be purified and dried. | 02-04-2016 |
549257000 | Of benzene or hydrocarbyl substituted benzene | 9 |
20090043114 | Flow reactors for chemical conversions with heterogeneous catalysts - Improved apparatus for use in process systems which include exothermic chemical conversions of organic compounds to value added products is disclosed, more particularly, flow reactors for exothermic chemical conversions using a fixed heterogeneous catalyst with means for control of the exotherm. Flow reactors of the invention comprise a plurality of walled conduits each having an outer surface disposed for contact with a heat-transfer medium, an inlet distribution manifold adapted for flow communication with a downstream manifold through channels formed by heterogeneous catalytic material disposed within each conduit during operation in a sequence of zones for catalyst having the same or different length along the longitudinal coordinate of the conduit and within each zone essentially uniform cross-section of the conduit measured in a plane perpendicular to the longitudinal coordinate thereby defining volume of the zone, and the sequence of zones comprising of at least two zones such that each downstream zone has a larger or smaller cross-section than the contiguous upstream zone. Another aspect of the invention includes processes which use such flow reactors, for example the continuous manufacture of maleic anhydride. | 02-12-2009 |
20100010238 | PROCESS FOR PRODUCING A RINGLIKE OXIDIC SHAPED BODY - A process for producing a ringlike oxidic shaped body by mechanically compacting a pulverulent aggregate introduced into the fill chamber of a die, wherein the outer face of the resulting compact corresponds to that of a frustocone. | 01-14-2010 |
20110144356 | Flow reactors for chemical conversions with heterogeneous catalysts - Improved apparatus for use in process systems which include exothermic chemical conversions of organic compounds to value added products is disclosed, more particularly, flow reactors for exothermic chemical conversions using a fixed heterogeneous catalyst with means for control of the exotherm. Flow reactors of the invention comprise a plurality of walled conduits each having an outer surface disposed for contact with a heat-transfer medium, an inlet distribution manifold o adapted for flow communication with a downstream manifold through channels formed by heterogeneous catalytic material disposed within each conduit during operation in a sequence of zones for catalyst having the same or different length along the longitudinal coordinate of the conduit and within each zone essentially uniform cross-section of the conduit measured in a plane perpendicular to the longitudinal coordinate thereby defining volume of the zone, and the sequence of zones comprising of at least two zones such that each downstream zone has a larger or smaller cross-section than the contiguous upstream zone. Another aspect of the invention includes processes which use such flow reactors, for example the continuous manufacture of maleic anhydride. | 06-16-2011 |
20110201829 | MODIFIED TRILOBE SHAPE FOR MALEIC ANHYDRIDE CATALYST - Embodiments of the present invention include improved shaped catalyst structures containing catalytic material comprised of mixed oxides of vanadium and phosphorus and using such shaped catalyst structures for the production of maleic anhydride. | 08-18-2011 |
20110201830 | HIGH PORE VOLUME VPO CATALYST FOR MALEIC ANHYDRIDE PRODUCTION - Embodiments of the present invention disclose improved micro-pore catalyst structures containing catalytic material comprised of mixed oxides of vanadium and phosphorus and using such improved micro-pore catalyst structures for the production of maleic anhydride. | 08-18-2011 |
20130165671 | OXIDATION CATALYST FOR MALEIC ANHYDRIDE PRODUCTION - A process for preparing a catalyst by selecting an active catalyst and contacting the active catalyst with one or more fluids containing an organic solvent or mixture of organic solvents. In one embodiment, each organic solvent has a dielectric constant within a range of about 5 to about 55 when measured at a temperature of 20° C. to 25° C. The catalyst thus prepared may be used in a process for preparing maleic anhydride. | 06-27-2013 |
20130172577 | PROCESS FOR PRODUCING A RINGLIKE OXIDIC SHAPED BODY - A process for producing a ringlike oxidic shaped body by mechanically compacting a pulverulent aggregate introduced into the fill chamber of a die, wherein the outer face of the resulting compact corresponds to that of a frustocone. | 07-04-2013 |
20140046077 | Process For The Production Of Anhydrides - In a process for producing anhydrides in a tubular reactor, gaseous reactants are passed downwardly through at least one reactor tube to a catalyst carrier where they pass into a passage defined by an inner perforated wall of a catalyst container before passing radially through the catalyst bed towards a perforated outer container wall. The reaction occurs as gas contacts the catalyst. Unreacted reactant and product exits the container though the perforated outer wall and then upwardly between an inner surface of a container skirt and the outer wall of the container and then over the end of the skirt and caused to flow downwardly between the outer surface of the skirt and the inner surface of the reactor tube where heat transfer takes place. These steps are repeated at any subsequent catalyst carrier product is then removed from the reactor outlet. | 02-13-2014 |
20140194631 | High Pore Volume VPO Catalyst for Maleic Anhydride Production - Embodiments of the present invention disclose improved micro-pore catalyst structures containing catalytic material comprised of mixed oxides of vanadium and phosphorus and using such improved micro-pore catalyst structures for the production of maleic anhydride. | 07-10-2014 |
549258000 | Of acyclic or alicyclic hydrocarbon | 9 |
20080300414 | PROCESS FOR RECHARGING THE REACTION TUBES OF A TUBE BUNDLE REACTOR WITH A NEW FIXED CATALYST BED - A process for recharging the reaction tubes of a tube bundle reactor with a new fixed catalyst bed, in which a heterogeneously catalyzed partial gas phase oxidation of an organic compound had been performed beforehand in a preceding fixed catalyst bed comprising Mo-comprising multielement oxide active compositions to form a steam-comprising product gas mixture, in which, before the recharge, solid deposit which had been deposited on the tube inner walls and comprises molybdenum oxide and/or molybdenum oxide hydrate is brushed away with the aid of a brush. | 12-04-2008 |
20110166368 | METHOD AND SYSTEM FOR OBTAINING SOLID REACTION PRODUCTS FROM SOLUTIONS - A process for recovering solid reaction products during partial oxidation of hydrocarbons in a liquid solvent as a reaction medium by multi-stage evaporative crystallization includes determining a final temperature of the multi-stage evaporative crystallization based on a melting point of the solvent. The pressure and temperature of the solvent is reduced in steps via successive crystallization stages until the final temperature is reached. Each of the crystallization stages includes a compressor configured to perform the reducing of the pressure and to withdraw vapors formed. The vapors from the compressor of a lower expansion pressure crystallization stage are introduced into a vapor discharge conduit of a next successive higher expansion pressure crystallization stage upstream of the compressor of the higher expansion pressure crystallization stage. | 07-07-2011 |
20110184191 | TWO-ZONE FLUIDISED-BED REACTOR | 07-28-2011 |
549259000 | Vanadium and phosphorus, in compound or elemental form, utilized | 6 |
20100210858 | OXIDATION CATALYST FOR MALEIC ANHYDRIDE PRODUCTION - A process for preparing a catalyst by selecting an active catalyst and contacting the active catalyst with one or more fluids containing an organic solvent or mixture of organic solvents. In one embodiment, each organic solvent has a dielectric constant within a range of about 5 to about 55 when measured at a temperature of 20° C. to 25° C. The catalyst thus prepared may be used in a process for preparing maleic anhydride. | 08-19-2010 |
20130217896 | GAS PHASE OXIDATION CATALYST WITH LOW CHARGE TRANSPORT ACTIVATION ENERGY - A catalyst for the gas phase oxidation of organic hydrocarbons comprises a multielement oxide which comprises at least one transition meal such as vanadium, wherein the catalyst has a charge transport activation energy E | 08-22-2013 |
20130338378 | SHAPED CATALYST BODY FOR FLOW-THROUGH FIXED-BED REACTORS - The invention relates to a shaped catalyst body for the catalytic conversion of organic and inorganic components in fixed-bed reactors, wherein the shaped catalyst body is formed as cylinder with a base, a cylinder surface, a cylinder axis and at least one continuous opening running parallel to the cylinder axis, and the base of the cylinder has at least four corners. | 12-19-2013 |
549260000 | Additional heavy metal, other than titanium, utilized | 3 |
20080227992 | Catalyst and Methods for Producing Maleic Anhydride - Catalysts comprising a catalytically active composition, the catalytically active composition comprising vanadium, phosphorus, iron and oxygen, wherein the catalytically active composition has an iron:vanadium atomic ratio of 0.005 to <0.05, and wherein iron in the catalytically active composition is derived from an iron starting material comprising Fe(III) phosphate; and processes for making such catalysts as well as uses therefor to prepare maleic anhydride are described. | 09-18-2008 |
20100069650 | POLYNARY METAL OXIDE PHOSPHATE - A novel polynary metal oxide phosphate of the general formula I | 03-18-2010 |
20130217897 | VPO CATALYST WITH LOW VANADIUM OXIDATION STATE FOR MALEIC ANDHYDRIDE PRODUCTION (D#81,745) - An oxidation catalyst comprising vanadium, phosphorus, and oxygen having average vanadium valence less than about 4.10, and a method of preparing such catalyst, is provided. The catalyst has side crush strength of at least about 5 lbs. and improved yield of maleic anhydride from n-butane between about 1% and about 6% absolute. The catalyst is formed by exposing a conventional active VPO catalyst having average vanadium valence between about 4.10 and about 4.40 to an organic solvent having a dielectric constant between about 5 and about 55 under conditions that facilitate an oxidation-reduction reaction, reducing the valence of the vanadium below 4.10. | 08-22-2013 |