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"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 8188310 | Process for the long-term operation of a heterogeneously catalyzed partial gas phase oxidation of an organic starting compound A process for the long-term operation of a heterogeneously catalyzed partial gas phase oxidation of an organic starting compound, in which the reaction gas input mixture is partially oxidized over a fixed catalyst bed which is accommodated in two successive temperat... | 05/29/2012 |
| 8178720 | Method for producing unsaturated aldehyde and unsaturated carboxylic acid Disclosed is a method of a gas-phase catalytic oxidation reaction of propylene, isobutylene, or tertiary butanol with molecular oxygen in the presence of a catalyst to produce a corresponding unsaturated aldehyde and a corresponding unsaturated carboxylic acid, in w... | 05/15/2012 |
| 8142742 | Method of producing unsaturated acid from olefin Disclosed is a shell-and-tube heat exchanger type reactor that can be used for a process of producing unsaturated acids from olefins via fixed-bed catalytic partial oxidation, which comprises at least one reaction tube, each including at least one first-step catalys... | 03/27/2012 |
| 8080686 | Integrated process for preparing a carboxylic acid from an alkane The present invention relates to an integrated process for producing unsaturated carboxylic acids from the corresponding C2-C4 alkane. The process begins with performance of thermally integrated dehydrogenation reactions which convert a C2... | 12/20/2011 |
| 8076510 | Process for starting-up a heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid or of methacrolein to methacrylic acid A process for starting-up a heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid or of methacrolein to methacrylic acid over a fixed catalyst bed disposed in a tube bundle reactor cooled by a heat exchange medium, wherein the temperature... | 12/13/2011 |
| 7910772 | Mixed metal oxide catalysts and processes for their preparation and use A catalyst for the oxidation of an alkane, alkene or mixtures thereof. The catalyst includes a mixed-metal oxide having the formula MoaVbNbcTedSbeOf wherein, when a=1, b=0.01 to 1.0, c=0.01 to 1.0, d=... | 03/22/2011 |
| 7906679 | Metal surfaces to inhibit ethylenically unsaturated monomer polymerization Materials for making apparatus and a method of inhibiting polymerization during manufacture, purification, handling and storage of subject ethylenically unsaturated monomers are disclosed. In particular, copper or metals containing copper, in the presence of oxygen,... | 03/15/2011 |
| 7897813 | Reactor for gas phase catalytic oxidation and a process for producing acrylic acid using it Conventional gas-phase catalytic oxidation reaction apparatus comprising two reactors for production of acrylic acid is subject to problems of high equipment costs for the reactors and piping, necessity for wide installation area and easy accumulation of carbides ge... | 03/01/2011 |
| 7897812 | Process for preparing acrolein or acrylic acid or a mixture thereof from propane A process for preparing acrolein or acrylic acid or a mixture thereof as the target product from propane, in which propane is partially dehydrogenated under heterogeneous catalysis in a reaction zone A, molecular hydrogen formed is at least partly combusted to water... | 03/01/2011 |
| 7880034 | Acrylic acid preparation method The invention relates to a method for preparing acrylic acid from propylene, comprising the oxidation of propylene to acrolein and a second step comprising the oxidation of acrolein to acrylic acid, including a glycerol dehydration step preformed in the presence of ... | 02/01/2011 |
| 7825277 | Process for the ozonolysis of unsaturated compounds A process for the ozonolysis of unsaturated starting materials, which is characterized in that the reaction is carried out in a structured reactor. ... | 11/02/2010 |
| 7816559 | Method of producing unsaturated acid from olefin Disclosed is a shell-and-tube heat exchanger type reactor that can be used for a process of producing unsaturated acids from olefins via fixed-bed catalytic partial oxidation, which comprises at least one reaction tube, each including at least one first-step catalys... | 10/19/2010 |
| 7807853 | Process for heterogeneously catalyzed partial gas phase oxidation of propylene to acrylic acid A process for heterogeneously catalyzed partial gas phase oxidation of propylene to acrylic acid in the absence of propane as an inert diluent gas, in which, in the starting reaction gas mixture, cyclopropane is substantially avoided as an impurity and crude propyle... | 10/05/2010 |
| 7799946 | Process for separating methacrolein from methacrylic acid in a gas phase product from the partial oxidation of isobutene A system and process for separating methacrolein (MA) from methacrylic acid (MAA) and acetic acid in the gas phase product from partial oxidation of isobutylene (IB) in two oxidation steps is disclosed. The process and system maximize recovery of all three component... | 09/21/2010 |
| 7795469 | Process for the selective (AMM) oxidation of lower molecular weight alkanes and alkenes An improved process for the production of unsaturated carboxylic acids and unsaturated nitriles from their corresponding C3 to C5 alkanes, or mixtures of C3 to C5 alkanes and alkenes, that involves oxidation in the presenc... | 09/14/2010 |
| 7579501 | Composite oxide catalyst and method of producing the same A composite oxide catalyst for the oxidation of an olefin containing Mo and Bi as essential components, characterized in that it has a specific surface area of 5 to 25 m2/g and a pore volume of 0.2 to 0.7 cc/g, and has a pore diameter distribution wherein... | 08/25/2009 |
| 7544836 | Process for producing (meth)acrolein or (meth)acrylic acid An object of the invention is to provide a production method for (meth)acrolein or (meth)acrylic acid which can continue an operation without causing a decomposition reaction of acrolein or the like. According to the invention, provided is a production method... | 06/09/2009 |
| 7518016 | Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound A process for the long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound over a catalyst bed, in which, in order to counteract the deactivation of the catalyst bed, the working pressure in the gas phase is inc... | 04/14/2009 |
| 7488845 | Method for the safe operation of a gas-phase partial oxidation A method for the safe operation of a continuously operated heterogeneously catalyzed gas-phase partial oxidation of an organic compound in a reactor, the composition of the feed gas mixture being controlled by pressure-controlled concentration determination of relev... | 02/10/2009 |
| 7396956 | Process for stably operating a continuous preparation process for obtaining acrolein or acrylic acid or a mixture thereof from propane A process for stably operating a continuous preparation process for obtaining acrolein or acrylic acid or a mixture thereof from propane, in which the feed rate of fresh propane to the process is utilized as a correcting element for stable steady-state operation. | 07/08/2008 |
| 7388109 | Preparation of acrolein or acrylic acid or a mixture thereof from propane A process for preparing acrolein or acrylic acid or a mixture thereof from propane, in which the propane is initially dehydrogenated under heterogeneous catalysis to give propene, secondary components are removed and the remaining gas mixture, comprising propane and... | 06/17/2008 |
| 7388107 | Process for producing (meth)acrylic acid or (meth)acrolein A method for producing (meth)acrylic acid or (meth)acrolein, comprising a catalytic gas phase oxidation process for producing (meth)acrylic acid or (meth)acrolein by supplying propylene, propane, or isobutylene and a gas containing molecular oxygen to a reactor whic... | 06/17/2008 |
| 7368602 | Process for producing (meth) acrylic acid There is provided a process for producing (meth)acrylic acid including an absorption step of bringing a (meth)acrylic acid-containing gas obtained by a gas phase catalytic oxidation method into an absorption tower and allowing the gas to contact with an absorbent, i... | 05/06/2008 |
| 7361622 | Multi-staged catalyst systems and process for converting alkanes to alkenes and to their corresponding oxygenated products Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared cumulatively from corresponding alkanes utilizing using a multi-staged catalyst system and a multi-stage process which comprises steam cracking of alk... | 04/22/2008 |
| 7358380 | Ru-substituted polyoxometalates and process for their preparation The invention relates to polyoxometalates represented by the formula (An)m+[R2(H2O)6X2W20O70]m− or solvates thereof, wherein A represents a cation, n is the number o... | 04/15/2008 |
| 7348455 | Process for producing (meth)acrylic acids A process for producing (meth)acrylic acid or (meth)acrylic acid esters, which comprises a reaction step comprising vapor phase catalytic oxidation of propylene, propane or isobutylene and, if necessary, a reaction step comprising an esterification step, characteriz... | 03/25/2008 |
| 7332626 | Method for production of (meth) acrylic acid A method for producing acrylic acid by absorbing acrylic acid at a high ratio and obtaining an acrylic acid-containing solution of high concentration is provided. This method comprises a step of circulating part of a discharged gas from an absorption step of acrylic... | 02/19/2008 |
| 7332624 | Method for production of acrylic acid A method for the production of acrylic acid comprises (i) a step for introducing a polymerization inhibitor to a stage other than a stage for supplying a raw material and a stage for supplying a reflux of said distilling column or (ii) a step for supplying the acryl... | 02/19/2008 |
| 7326802 | Preparation of at least one partial oxidation and/or ammoxidation product of propylene In a process for preparing at least one partial oxidation and/or ammoxidation product of propylene, the propylene is obtained from crude propane by dehydrogenating and subjected in the presence of unconverted propane as a constituent of a gas mixture 2 which compris... | 02/05/2008 |
| 7321060 | Method for production of acrylic acid A method for the production of acrylic acid of high concentration by absorbing acrylic acid with high absorption ratio of acrylic acid is provided. In a method for producing acrylic acid by a procedure comprising a step of catalytic gas phase oxidation reaction and ... | 01/22/2008 |
| 7321058 | Method for producing acrolein and/or acrylic acid Acrolein and/or acrylic acid are prepared from propane and/or propene by a process comprising the following steps: (a) separation of propane and/or propene from a propane- and/or propene-containing gas mixture by absorption in an absorbent, (b) separation of the pro... | 01/22/2008 |
| 7304180 | Process for producing metal oxide catalyst The invention relates to a process for producing a metal oxide catalyst capable of producing acrylic acid, acrylonitrile or the like in one stage by catalytic oxidation reaction of propane in a high yield. The invention is characterized by using one obtained ... | 12/04/2007 |
| 7304159 | Ligands and catalyst systems thereof for ethylene oligomerisation to linear alpha olefins Mixed bis-imine pyridine ligands of formula (I), wherein Z1, which is different from Z2, is an optionally substituted aryl group; and Z2 comprises an optionally substituted heterohydrocarbyl moiety, or an optionally substituted aryl ... | 12/04/2007 |
| 7300555 | Method for the rectifying separation of liquids containing (meth)acrylic monomers in a rectification column A process for rectificatively separating liquids containing (meth)acrylic monomers in a rectification column is provided, in which a stream is withdrawn from the rectification column and recycled into the rectification column as a molecular oxygen-enriched liquid ph... | 11/27/2007 |
| 7294741 | Process for the production of acrylic acid The present invention relates to a process for the production of acrylic acid (AA) comprising the steps wherein: a) a 1st gas mixture comprising propylene, oxygen, an inert gas and steam is subjected to a 1st catalytic oxidation reaction stage thereby converting the... | 11/13/2007 |
| 7294734 | Process for converting a hydrocarbon to an oxygenate or a nitrile This invention relates to a process for converting a hydrocarbon reactant to a product comprising an oxygenate or a nitrile, the process comprising: (A) flowing a reactant composition comprising the hydrocarbon reactant, and oxygen or a source of oxygen, and optiona... | 11/13/2007 |
| 7288669 | NOx treated mixed metal oxide catalyst An improved catalyst comprising a mixed metal oxide, either promoted or not, is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase ammoxidation of an alkane or a mixture... | 10/30/2007 |
| 7285679 | Oxidation of alkanes Alkanes are oxidised to oxygenates such as carboxylic acids with molecular oxygen employing a two component catalyst system which uses a liganded heavy metal compound and a mixed metal oxide. ... | 10/23/2007 |
| 7279442 | Process for producing catalyst for production of unsaturated aldehyde and unsaturated carboxylic acid A process for producing a catalyst which has a high mechanical strength and is capable of producing an unsaturated aldehyde and an unsaturated carboxylic acid constantly over a long period of time and in good yield; and, a method for producing an unsaturated aldehyd... | 10/09/2007 |
| 7262324 | Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system The present invention provides a process of producing unsaturated acids from unsaturated aldehydes by fixed-bed catalytic partial oxidation in a shell-and-tube heat exchanger-type reactor, as well as a shell-and-tube heat exchanger-type reactor for use in the proces... | 08/28/2007 |
