141 |
Conversion of alkanes to liquid oxygenates |
US10750984 |
2004-01-02 |
US20060009662A1 |
2006-01-12 |
John Waycuilis |
A process is provided for converting an alkane to an oxygenated product by passing an alkane gas over a first fixed bed containing a higher valence bromide salt to produce an alkyl bromide, a hydrobromic acid, and a lower valence bromide salt. The alkyl bromide and hydrobromic acid are conveyed as a gas to a second fixed bed containing a metal oxide and are passed over the second fixed bed to produce the first bromide salt and the oxygenated product. The metal oxide in the second fixed bed is regenerated by passing oxygen over the second fixed bed producing the metal oxide and bromine. The bromine is conveyed as a gas from the second fixed bed to the first fixed bed. The first bromide salt of the first fixed bed is regenerated by passing the bromine over the first fixed bed producing the first bromide salt. |
142 |
Long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound |
US11121986 |
2005-05-05 |
US20050261517A1 |
2005-11-24 |
Martin Dieterle; Gerhard Laqua; Klaus Mueller-Engel |
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 increased during the operating time of the catalyst bed. |
143 |
Method for oxidizing hydrocarbons |
US10239215 |
2001-03-22 |
US06852893B2 |
2005-02-08 |
Adolf Kühnle; Mark Duda; Carsten Jost; Guido Fries; Jochen Kirchhoff; Thomas Schiffer; Roger Arthur Sheldon; Sasidharan Manickam; Isabella W. C. E. Arends |
The invention relates to a method for oxidizing substrates such as hydrocarbons, waxes or soot. The method involves the use of a compound of formula (I) in which: R1 and R2 represent H, an aliphatic or aromatic alkoxy radical, carboxyl radical, alkoxycarbonyl radical or hydrocarbon radical, each having 1 to 20 hydrocarbon atoms, SO3H, NH2, OH, F, Cl, Br, I and/or NO2, whereby R1 and R2 designate identical or different radicals or R1 and R2 can be linked to one another via a covalent bonding; Q1 and Q2 represent C, CH, N, CR5, each being the same or different; X and Z represent C, S, CH2, each being the same or different; Y represents O and OH; k=0, 1, 2; l=0, 1, 2; m=1 to 3, and; R5 represents one of the meanings of R1. Said compound is used as a catalyst in the presence of a radical initiator, whereby the molar ratio of the catalyst to the hydrocarbon is less than 10 mol %. Peroxy compounds or azo compounds can be used as the radical initiator. Preferred substrates are aliphatic or aromatic hydrocarbons. |
144 |
Method for producing organic compound by substituting halogen atoms |
US10864533 |
2004-06-10 |
US20040256743A1 |
2004-12-23 |
Setsuko
Funaki; Yoshiteru
Taniguchi; Tadahito
Nobori; Yoshihiro
Yamamoto; Isao
Hara; Takaomi
Hayashi; Kazumi
Mizutani; Shinji
Kiyono |
A method for producing an organic compound having Q, the method including a step of reacting a compound represented by general formula (2) with an organic starting material having at least one halogen atom bonded to a carbon atom having four null bonds so as to replace the halogen atom in the organic starting material with Q: MQanullnull(2) wherein M, Q and a are defined in the presence of a compound represented by general formula (1) 1 wherein Znull and Rs are also defined. |
145 |
Method for producing saturated alcohols, ketones, aldehydes and carboxylic acids |
US10482777 |
2004-06-25 |
US20040249197A1 |
2004-12-09 |
Adolf
Kuhnle; Carsten
Jost; Roger
Arthur
Sheldon; Sandrine
M.M.
Chatel; Isabella
W.C.E.
Arends |
The invention relates to a method for catalytically oxidizing unsaturated hydrocarbons to form oxidation products, and to the production of saturated alcohols, ketones, aldehydes or carboxylic acids by subsequently hydrogenating the oxidation product. A compound of formula (I) is used as a catalyst during oxidizing in which: R1, R2nullH, an aliphatic or aromatic alkoxy radical, carboxyl radical, alkoxycarbonyl radical or hydrocarbon radical, each having 1 to 20 carbon atoms, SO3H, NH2, OH, F, Cl, Br, I and/or NO2, whereby R1 and R2 signify identical or different radicals or R1 and R2 can be coupled to one another via a covalent bond, with Q1, Q2nullthe same or different, C, CH, N; X, ZnullC, S or CH2; YnullO or OH; knull0, 1 or 2; 1null0, 1 or 2; mnull1 to 100 in the presence of a radical initiator. Peroxy compounds or azo compounds can be used as radical initiators. Preferred substrates are cyclic aliphatic or aromatic compounds. |
146 |
Process for catalyzing the oxidation of organic compounds |
US10049208 |
2002-02-08 |
US06815543B1 |
2004-11-09 |
Patrick Bernardelli |
Oxidation of organic compounds is catalyzed by addition of a catalytic amount of a metalloporphyrin in a non-reactive aprotic solvent. |
147 |
Process for producing oxide with higher oxidation than alcohol |
US09959844 |
2001-11-28 |
US06797830B2 |
2004-09-28 |
Hideo Tanaka; Yutaka Kameyama |
The present invention provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound thereon and an oxidative catalyst thereon, and oxidizing the alcohol compound in the presence of an oxidizing agent, giving an oxide higher in oxidizing degree than the alcohol compound, and also provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound, and subjecting the alcohol compound to an electrolytic oxidation, giving an oxide higher in oxidizing degree than the alcohol compound. |
148 |
Catalytic oxidation of organic substrates by transition metal complexes in organic solvent media expanded by supercritical or subcritical carbon dioxide |
US10205863 |
2002-07-26 |
US06740785B2 |
2004-05-25 |
Bala Subramaniam; Daryle H. Busch; Ghezai T. Musie; Ming Wei |
Improved oxidation methods are provided wherein a reaction mixture comprising a substrate to be oxidized (e.g., phenols, alkenes) and an oxidation catalyst (typically dispersed in an organic solvent system) is supplemented with a compressed gas which expands the reaction mixture, thus accelerating the oxidation reaction. In preferred practice pressurized subcritical or supercritical carbon dioxide is used as the expanding gas, which is introduced into the reaction mixture together with an oxidizing agent. The inventive methods improve the substrate conversion and product selectivity by increasing the solubility of the oxidizing agent in the reaction mixture. |
149 |
Oxidative reactions using membranes that selectively conduct oxygen |
US10130822 |
2002-05-23 |
US06730808B2 |
2004-05-04 |
Stefan Bitterlich; Hartwig Voss; Hartmut Hibst; Andreas Tenten; Ingolf Voigt; Ute Pippardt |
Reactor membranes for used in oxidation reactions of hydrocarbons involving oxygen comprising a selective oxidation catalyst on a mixed conducting, oxide ion selective ceramic membrane of the composition (Sr1-xCax)1-yAyMn1-zBzO3-&dgr;, where A is Ba, Pb, Na, K, Y, an element of the lanthanide group or a combination thereof, B is Mg, Al, Ga, In, Sn, an element of the 3d or 4d period or a combination thereof, x is from 0.2 to 0.8, y is from 0 to 0.4, z is from 0 to 0.6, and &dgr; is a number, dependent on x, y and z, that renders the composition charge neutral. |
150 |
Method for oxidizing hydrocarbons |
US10453754 |
2003-06-03 |
US20030204102A1 |
2003-10-30 |
Markus
Weisbeck; Ernst
Ulrich
Dorf; Gerhard
Wegener; Christoph
Schild |
The present invention relates to a catalyst for oxidizing hydrocarbons with a hydrogen/oxygen mixture. The catalyst contains a) a support material containing titanium and b) silver particles having an average particle size of from 0.3 to 100 nm. |
151 |
Method for oxidizing hydrocarbons |
US10239215 |
2003-01-15 |
US20030176733A1 |
2003-09-18 |
Adolf
Knullnhle; Mark
Duda; Carsten
Jost; Guido
Fries; Jochen
Kirchhoff; Thomas
Schiffer |
The invention relates to a method for oxidizing substrates such as hydrocarbons, waxes or soot. The method involves the use of a compound of formula (I) in which: R1 and R2 represent H, an aliphatic or aromatic alkoxy radical, carboxyl radical, alkoxycarbonyl radical or hydrocarbon radical, each having 1 to 20 hydrocarbon atoms, SO3H, NH2, OH, F, Cl, Br, I and/or NO2, whereby R1 and R2 designate identical or different radicals or R1 and R2 can be linked to one another via a covalent bonding; Q1 and Q2 represent C, CH, N, CR5, each being the same or different; X and Z represent C, S, CH2, each being the same or different; Y represents O and OH; knull0, 1, 2; lnull0, 1, 2; mnull1 to 3, and; R5 represents one of the meanings of R1. Said compound is used as a catalyst in the presence of a radical initiator, whereby the molar ratio of the catalyst to the hydrocarbon is less than 10 mol %. Peroxy compounds or azo compounds can be used as the radical initiator. Preferred substrates are aliphatic or aromatic hydrocarbons. |
152 |
Process for producing oxide with higher oxidation than alcohol |
US09959844 |
2001-11-28 |
US20030114712A1 |
2003-06-19 |
Hideo
Tanaka; Yutaka
Kameyama |
The present invention provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound thereon and an oxidative catalyst thereon, and oxidizing the alcohol compound in the presence of an oxidizing agent, giving an oxide higher in oxidizing degree than the alcohol compound, and also provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound, and subjecting the alcohol compound to an electrolytic oxidation, giving an oxide higher in oxidizing degree than the alcohol compound. |
153 |
Catalytic oxidation of organic substrates by transition metal complexes in organic solvent media expanded by supercritical or subcritical carbon dioxide |
US09545214 |
2000-04-07 |
US06448454B1 |
2002-09-10 |
Bala Subramaniam; Daryle H. Busch; Ghezai T. Musie; Ming Wei |
Improved oxidation methods are provided wherein a reaction mixture comprising a substrate to be oxidized (e.g., phenols, alkenes) and an oxidation catalyst (typically dispersed in an organic solvent system) is supplemented with a compressed gas which expands the reaction mixture, thus accelerating the oxidation reaction. In preferred practice pressurized subcritical or supercritical carbon dioxide is used as the expanding gas, which is introduced into the reaction mixture together with an oxidizing agent. The inventive methods improve the substrate conversion and product selectivity by increasing the solubility of the oxidizing agent in the reaction mixture. |
154 |
Method for regenerating a zeolitic catalyst |
US10061282 |
2002-02-04 |
US20020082159A1 |
2002-06-27 |
Georg
Heinrich
Grosch; Ulrich
Mueller; Andreas
Walch; Norbert
Rieber; Wolfgang
Harder |
A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600null C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at from 250 to 800null C., preferably from 350 to 600null C., with a gas stream which contains from 0.1 to 4% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof, and (III) treating the catalyst at from 250 to 800null C., preferably from 350 to 600null C., with a gas stream which contains from more than 4 to 100% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof. |
155 |
Radioactive seeds for brachytherapy and a process for making the same |
US09191672 |
1998-11-13 |
US06391279B1 |
2002-05-21 |
Prahlad R. Singh; Gerald P. Tercho; Jack N. Wentz; Keith R. Olewine |
Novel radioactive seeds for brachytherapy and a reproducible method of manufacturing the seeds is described, wherein the seeds contain either Pd-103 or I-125 disposed within a cured resin matrix. |
156 |
Process for preparing alkylene oxide adducts |
US13208998 |
1998-08-10 |
US6372927B2 |
2002-04-16 |
TATSUMI NOBUHIRO; OGURA YOSHIKAZU; KATAYAMA TAKANOBU; TABATA OSAMU |
The process for preparing an alkylene oxide adduct, including the steps of feeding an organic compound having active hydrogen and an alkylene oxide to a reaction column packed with a solid catalyst, and carrying out addition reaction of the organic compound having active hydrogen with an alkylene oxide in a gas-liquid fixed bed reaction, wherein the alkylene oxide is in a state of gas and the organic compound having active hydrogen is in a state of liquid. |
157 |
Process for photo-induced partial oxidation of organic chemicals to alcohols, ketones, and aldehydes using flame deposited non-structured photocatalysts |
US09906810 |
2001-07-18 |
US20020029955A1 |
2002-03-14 |
Endalkachew
Sahle-Demessie; Pratim
Biswas; Michale
A.
Gonzalez; Zhong-Min
Wang; Subhas
K.
Sikdar |
Organic molecules are partially oxidized in that the gas phase on supported and immobilized photocatalysts deposited having a nanostructure. the photocatalysts are semiconductors such as titanium dioxide and are preferentially coated onto a substrate by flame aerosol coating. |
158 |
PROCESS FOR PREPARING ALKYLENE OXIDE ADDUCTS |
US09132089 |
1998-08-10 |
US20020010350A1 |
2002-01-24 |
NOBUHIRO
TATSUMI; YOSHIKAZU
OGURA; TAKANOBU
KATAYAMA; OSAMU
TABATA |
The process for preparing an alkylene oxide adduct, including the steps of feeding an organic compound having active hydrogen and an alkylene oxide to a reaction column packed with a solid catalyst, and carrying out addition reaction of the organic compound having active hydrogen with an alkylene oxide in a gas-liquid fixed bed reaction, wherein the alkylene oxide is in a state of gas and the organic compound having active hydrogen is in a state of liquid. |
159 |
Addition reaction of hydroxyl-containing compounds with alkynes or
allenes |
US92058 |
1998-06-05 |
US6060035A |
2000-05-09 |
Joaquim Henrique Teles; Norbert Rieber; Klaus Breuer; Dirk Demuth; Hartmut Hibst; Alfred Hagemeyer |
Compounds of the formulae I and II ##STR1## are prepared by an addition reaction of a compound of the formula IIIR.sup.1 OH IIIwith an acetylene or allene of the formula IV or V ##STR2## where R.sup.1 and R are as defined, in the gas phase at elevated temperatures in the presence of a heterogeneous, silicate-containing catalyst, by a process in which the catalyst used is one which contains or consists of, as the active component, a zinc silicate obtained by precipitation in aqueous solution from a soluble silicon compound and zinc compound, zinc silicate beinga) an essentially X-ray amorphous zinc silicate of the formula VIZn.sub.a Si.sub.c O.sub.a+2c-0.5e (OH).sub.e.fH.sub.2 O VI, where e is from 0 to 2a+4c and the ratio a:c is from 1 to 3.5, and the ratio f:a is from 0 to 200, and/orb) a crystalline zinc silicate having the structure of hemimorphite of the formula Zn.sub.4 Si.sub.2 O.sub.7 (OH).sub.2.H.sub.2 O. |
160 |
Process for catalytic addition of nucleophiles to alkynes or allenes |
US91235 |
1998-06-15 |
US6037482A |
2000-03-14 |
Michael Schulz; Joaquim Henrique Teles |
A process for the catalytic addition of nucleophilic agents to alkynes or allenes to form alkenes substituted by the nucleophile which may further react with the nucleophile and/or isomerize comprises using a catalyst comprising a wholly or partly ionized complex of univalent gold. |