Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

40731results about "Bulk chemical production" patented technology

4'-thionucleosides and oligomeric compounds

ActiveUS20050130923A1Organic active ingredientsBiocideThionucleosidesOrganic chemistry
The present invention provides modified oligomeric compounds and compositions of oligomeric compounds for use in the RNA interference pathway of gene modulation. The modified oligomeric compounds include siRNA and asRNA having at least one affinity modification.
Owner:IONIS PHARMA INC

Process for catalytically producing ethylene directly from acetic acid in a single reaction zone

A process for the selective production of ethylene by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form ethylene in a single reaction zone is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over either a copper supported on iron oxide, copper-aluminum catalyst, cobalt supported on H-ZSM-5, ruthenium-cobalt supported on silica or cobalt supported on carbon selectively produces ethylene in a vapor phase at a temperature in the range of about 250° C. to 350° C.
Owner:CELANESE INT CORP

Process of methanol conversion for preparing arene and catalyst and catalyst preparation method

InactiveCN1880288AHigh selectivityHigh flexibility in process operationMolecular sieve catalystsHydrocarbonsGas phaseAromatic hydrocarbon
This invention relates to a process for transforming methanol to aromatic hydrocarbons, comprising: use methanol as raw material, with modified ZSM-5 molecular sieve as catalyst, under conditions of operation pressure 0.1-5.0Mpa, operation temperature 300-460Deg C, raw material liquid air speed 0.1-6.0h-1, transformed to products with aromatic hydrocarbons as main components; separate the gas-phase products lower carbon hydrocarbons from the liquid-phase C5+ hydrocarbons by cooling separation; the liquid-phase C5+ hydrocarbons then can be separated to be aromatic hydrocarbons and non-aromatic hydrocarbons by extracting separation. This invention is characterized of high total selectivity of aromatic hydrocarbons and flexible process operation.
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI +1

Tunable catalyst gas phase hydrogenation of carboxylic acids

A process for selective formation of ethanol from acetic acid includes contacting a feed stream containing acetic acid and hydrogen at an elevated temperature with catalyst comprising platinum and tin on a high surface area silica promoted with calcium metasilicate. Selectivities to ethanol of over 85% are achieved at 280° C. with catalyst life in the hundreds of hours.
Owner:CELANESE INT CORP

Enhanced pyruvate to acetolactate conversion in yeast

ActiveUS20090305363A1Improve throughputReduction of pyruvate decarboxylase activityFungiTransferasesYeastCytosol
A high flux in conversion of pyruvate to acetolactate was achieved in yeast through expression of acetolactate synthase in the cytosol in conjunction with reduction in pyruvate decarboxylase activity. Additional manipulations to improve flux to acetolactate are reduced pyruvate dehydrogenase activity and reduced glycerol-3-phosphate dehydrogenase activity. Production of compounds having acetolactate as an upstream intermediate benefit from the increased conversion of pruvate to acetolactate in the described strains.
Owner:GEVO INC

Apparatus for on-site production of nitrate ions

An apparatus and method produces nitrate ions on-site from water, natural gas and air extracted in proximity to the apparatus. The apparatus generates nitrate ions and brings the nitrate ions into contact with an aqueous system. Hydrogen sulfide present in the aqueous system is removed and the production of hydrogen sulfide by sulfate-reducing bacteria (SRB) is eliminated by introducing into the system nitrate ions, whereby denitrifying microorganisms, using nitrate, outcompete the sulfate-reducing bacteria for the available carbon nutrients, thus preventing the SRB from producing hydrogen sulfide. Nitrate ions generated by the apparatus and added to the aqueous system which contains the denitrifying microorganisms can enhance oil recovery by means of microbial enhanced oil recovery mechanisms.
Owner:NITRA GEN LLC

Biomass Char Compositions for Catalytic Gasification

InactiveUS20090217575A1Efficient utilization of carbonEfficient comprehensive utilizationProductsReagentsParticulatesHydrogen
Particulate compositions are described comprising an intimate mixture of a biomass char producedfrom the combustion of a biomass, such as switchgrass or hybrid poplar, with at least a second carbonaceous material, such as petroleum coke or coal, and, optionally a gasification catalyst, for gasification in the presence of steam to yield a plurality of gases including methane and at least one or more of hydrogen, carbon monoxide, and other higher hydrocarbons are formed. Processes are also provided for the preparation of the particulate compositions and converting the particulate composition into a plurality of gaseous products.
Owner:SURE CHAMPION INVESTMENT LTD

Nucleoside and oligonucleotide analogues

A probe for a gene or a primer for starting amplification comprising an oligonucleotide analogue comprising two or more nucleoside units, wherein at least one of the nucleoside units is a structure of the formula (2):wherein A represents a C1-C4 alkylene group, and B is an unsubstituted purin-9-yl group, an unsubstituted 2-oxo-pyrimidin-1-yl-group, a substituted purin-9-yl-group or a substituted 2-oxo-pyrimidin-1-yl group. Also a method for preventing or treating a disease preventable or treatable by the antisense or antigene activity of an oligonucleotide by administering the oligonucleotide analogue.
Owner:DAIICHI SANKYO CO LTD

Olefin metathesis reaction catalyst and preparation method therefor

The present invention relates to an olefin metathesis reaction catalyst where rhenium (Re) oxide or molybdenum (Mo) oxide is supported, as a catalyst main component, on a surface-modified mesoporous silica or mesoporous alumina support, and a preparation method therefor. The olefin metathesis reaction catalyst of the present invention allows highly efficient metathesis of long-chain unsaturated hydrocarbons having at least eight carbons at a low temperature of 150° C. or lower. The catalyst can be separated readily from reaction solution, regenerated at a low temperature of 400° C. or lower by removing toxins accumulated on it during the metathesis reaction, and used repeatedly in metathesis reaction many times, thereby being made good use in commercial olefin metathesis processes.
Owner:KOREA RES INST OF CHEM TECH

Catalyst-Loaded Coal Compositions, Methods of Making and Use

ActiveUS20090048476A1Efficient and high-yielding gasificationHigh yield productionCatalyst regeneration/reactivationSolid fuelsPtru catalystCoal matrix
The present invention relates to catalyst-loaded coal compositions having a moisture content of less than about 6 wt %, a process for the preparation of catalyst-loaded coal compositions, and an integrated process for the gasification of the catalyst-loaded coal compositions. The catalyst-loaded coal compositions can be prepared by a diffusive catalyst loading process that provides for a highly dispersed catalyst that is predominantly associated with the coal matrix, such as by ion-exchange.
Owner:SURE CHAMPION INVESTMENT LTD

Hydrogenolysis of 6-carbon sugars and other organic compounds

Methods for hydrogenolysis are described which use a Re-containing multimetallic catalyst for hydrogenolysis of both C—O and C—C bonds. Methods and compositions for reactions of hydrogen over a Re-containing catalyst with compositions containing a 6-carbon sugar, sugar alcohol, or glycerol are described. It has been surprisingly discovered that reaction with hydrogen over a Re-containing multimetallic catalyst resulted in superior conversion and selectivity to desired products such as propylene glycol.
Owner:MICHIGAN STATE UNIV +1

Ester compounds, polymers, resist compositions and patterning process

A novel ester compound having an exo-form 2-alkylbicyclo[2.2.1]heptan-2-yl group as the protective group is provided as well as a polymer comprising units of the ester compound. The polymer is used as a base resin to formulate a resist composition having a higher sensitivity, resolution and etching resistance than conventional resist compositions.
Owner:SHIN ETSU CHEM IND CO LTD

System and process for preparing aromatic hydrocarbon by converting methanol or dimethyl ether

The invention relates to a system and a process for preparing aromatic hydrocarbon by converting methanol or dimethyl ether and belongs to the technical field of aromatic hydrocarbon production. The methanol or the dimethyl ether serving as a raw material firstly reacts in an aromatization reactor; a reaction product is separated; H2, methane, mixed C8 aromatic hydrocarbon and partial C9s + hydrocarbons serving as products are output from the system; and C2+ non-aromatic hydrocarbon and aromatic hydrocarbons except the mixed C8 aromatic hydrocarbon and the partial C9s + hydrocarbons are take as a circular material flow and return to corresponding reactors for further aromatization reaction. By separating and recycling the product obtained in the process of aromizing the methanol or the dimethyl ether, the system and the process improve the yield and selectivity of the aromatic hydrocarbon; and moreover, the process is flexible, and target products can be changed according to market demands.
Owner:TSINGHUA UNIV

System and method for converting biomass to ethanol via syngas

A method and apparatus for synthesizing ethanol using synthetic routes via synthesis gas are disclosed. A method and apparatus for gasifying biomass, such as biomass, in a steam gasifier that employs a fluidized bed and heating using hot flue gases from the combustion of synthesis gas is described. Methods and apparatus for converting synthesis gas into ethanol are also disclosed, using stepwise catalytic reactions to convert the carbon monoxide and hydrogen into ethanol using catalysts including iridium acetate.
Owner:WOODLAND BIOFUELS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products