18511 results about "Methanol" patented technology

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.

A process for preparing dimethylbenzene by aromatization of methanol relates to a process for preparing dimethylbenzene by conducting aromatization reaction in a methanol aromatization reactor with methanol and hydrocarbon as raw materials. The process uses a metal-modified molecular sieve composite material as catalyst and causes the mixture of methanol and one or a plurality of C1-C12 hydrocarbons to conduct aromatization reaction in the methanol aromatization reactor. By adjusting the ratio between methanol and hydrocarbons in the raw material, the process regulates and controls the coordination between aromatization and alkylation reaction and realizes the purposes of effectively improving the yield of the target product dimethylbenzene and prolonging the service cycle of catalyst.

A method was developed to prepare silk fibroin microspheres using lipid vesicles as templates to efficiently load therapeutic agents in active form for controlled release. The lipids are subsequently removed through the use of a dehydration agent, such as methanol or sodium chloride, resulting in β-sheet structure dominant silk microsphere structures having about 2 μm in diameter. The therapeutic agent can be entrapped in the silk microspheres and used in pharmaceutical formulations for controlled-release treatments.

A system involving a two-step gasification of a carbonaceous source to produce bulk hydrogen that avoids the early formation of CO₂ and obviates the traditional water gas shift (WGSR) step, carbochlorination of a metallic ore the production of metals found in the ore that utilizes carbon monoxide as an oxygen sink, rather than the traditional coke, and carbon oxides management that eliminates major impediments to emission-neutral power generation and the reduction of major metals. The gasification uses a rotary kiln reactor and gas-gas cyclonic separation process to separate synthesis gas into purified hydrogen and purified carbon monoxide. Purified bulk carbon monoxide issued in metallurgical reduction, and purified bulk hydrogen as fuel for an emission-neutral hydrogen combined cycle (HCC) turbine power generation station. The carbochlorination is integrated with: a) the concurrent separation and purification of all metal-chlorides (metchlors) and capture of CO₂ for passage to the carbon oxides management system; b) the direct reduction of metchlors to nanoscale metallurgical powders and/or to dendritically-shaped particles, including metchlor reduction for the ultrahigh-performance semiconductor metals of the III-V group; and, c) the reforming of metal-oxides with improved crystalline structure from metchlors. The carbon oxides management collects, stores and directs to points of usage, carbon oxides that arise in various processes of the integrated system, and captures carbon monoxide for process enhancement and economic uses and captures carbon dioxide as a process intermediate and for economic uses.

The present invention relates to an improved process to prepare cis-3-dihydrocarbylmethano-5-hydrocarbyidihydro-furan-2-ones. The present invention also relates to novel compositions of matter comprising enantiomerically pure cis-3-dihydrocarbylmethano-5-hydrocarbyldihydro-furan-2-ones, being the (3S,5S), (3R,5R), (3S,5R), or (3R,5S) optically pure isomers, and a new, more cost efficient process to prepare said optically pure isomers.

An environmentally beneficial method of producing methanol from varied sources of carbon dioxide including flue gases of fossil fuel burning power plants, industrial exhaust gases or the atmosphere itself. Converting carbon dioxide by an electrochemical reduction of carbon dioxide in a divided electrochemical cell that includes an anode in one cell compartment and a metal cathode electrode in another cell compartment that also contains an aqueous solution comprising methanol and an electrolyte of one or more alkyl ammonium halides, alkali carbonates or combinations thereof to produce therein a reaction mixture containing carbon monoxide and hydrogen which can be subsequently used to produce methanol while also producing oxygen in the cell at the anode.

To eliminate the drawbacks of false alarm problems due to mimic flame features of sunlight or moonlight reflecting on wave or mimic flame features of fabrics, animals or stage flames and alarm failures of methanol or ethanol burning flames or flames under a high illumination background condition, a multi-wavelength video image fire detecting system is disclosed consisting of a multi-wavelength video image fire detector, which is comprised of a color and near IR dual-mode camera, a color and B/W dual-mode camera, an image capture module, a processor and controller, an I/O module, a housing and a visible light and near IR view window, an alarm and indicate equipment, a setting and debugging system, a communication equipment, an area alarm and monitor system, and a pan & title and control system.

A coating liquid for an intermediate layer of an electrophotographic photoconductor comprises at least one of alcohol solvents; and N-methoxymethylated nylon, in which the N-methoxymethylated nylon has solution viscosity within a range from 43 mPa·s to 50 mPa·s when dissolving into methanol at 30° C. in a concentration of 20% by mass.

A fuel cell comprising: (a) a binary anode, (b) a cathode, and (c) a liquid electrolyte disposed between and interacting with the binary anode and the cathode, wherein the binary anode includes at least one liquid fuel and at least one solid fuel. Preferably, the electrolyte includes an alcohol such as methanol, and the solid fuel includes aluminum, magnesium and/or zinc.

Process for converting synthesis gas to ethanol, including the steps of 1) introducing synthesis gas, together with methyl ethanoate and/or ethyl ethanoate, into an alcohol synthesis unit to produce methanol and ethanol, 2) separating the methanol from the ethanol of step 1, 3) introducing methanol, from step 2, together with CO, into a carbonylation unit in the presence of a methanol carbonylation catalyst, to produce ethanoic acid, and 4) introducing ethanoic acid, from step 3, together with methanol and/or ethanol, into an esterification unit to produce methyl ethanoate and/or ethyl ethanoate. In step 5), methyl ethanoate and/or ethyl ethanoate, produced in step 4, are fed into the alcohol synthesis unit of step 1, and in step 6) ethanol from step 2 is recovered.

The invention relates to a method for preparing polyoxymethylene dimethyl ether. The invention mainly solves the problems of the prior art that: catalyst is corrosive, and is complexly separated from reactant, and energy consumption is high. The method adopts methanol and trioxymethylene as materials, the materials react with catalyst by way of contact under mild conditions, so that the polyoxymethylene dimethyl ether is produced, wherein the catalyst is selected from Beta zeolite, ZSM-5 molecular sieve, MCM-22 and MCM-56 zeolite molecular sieve. The method effectively solves the problems, and can be used in the industrial production of polyoxymethylene dimethyl ether.

The invention discloses a process for producing low carbon olefin and arene parallel cogeneration gasoline by using methanol as a raw material. In the process, the methanol is used as the raw material and a molecular sieve catalyst is adopted to produce the low carbon olefin and arene parallel cogeneration gasoline by a methanol alkylation reaction and aromatization. In the process, the coal-based methanol is used as the raw material and can replace the conventional petroleum raw material to cogenerate a basis organic chemical raw material, and thus, the dependence degree of the conventional petrochemical industry on the petroleum can be reduced. Meanwhile, the process is also beneficial for reducing the foreign dependence degree of national petroleum, the strategic safety of energy and resources is improved, the production process of the process has low discharge, low pollution and low energy consumption, the requirements on green and environment protection are met, and the process has the advantages of low production cost and strong market competitiveness.

The invention belongs to the field of macromolecule super-amphiphobic materials and discloses a super-amphiphobic polymer and a super-amphiphobic surface. The super-amphiphobic polymer is a random copolymer composed of structural units shown as a formula I and a formula II. The super-amphiphobic surface is obtained by comprising the following steps of: pre-processing a substrate material; placinga micro-balloon in a fluorine-containing solvent, and ultrasonically dissolving to obtain a micro-balloon supernatant solution; adding the super-amphiphobic polymer, a hydrochloric acid tetrahydrofuran solution and water into the micro-balloon solution while stirring, placing the substrate material, and reacting for 5-24 h; and taking out the substrate material, washing by using the fluorine-containing solvent, methanol and water in turn, drying in vacuum, and obtaining the super-amphiphobic surface. The super-amphiphobic polymer disclosed by the invention can give good surface hydrophobic ability and oleophobic ability to the substrate. Because the polymer has the characteristics of the fluorine-containing polymer so that the polymer can be chemically bonded with the surface of the substrate, the obtained super-amphiphobic surface has good scrubbing resistant property and corrosion resistant property.

The invention discloses a catalyst for preparing aromatic hydrocarbon through methanol conversion. The catalyst comprises a component A and components B, wherein the mass ratio of component A to components B is 0.25-4; the component A is a modified zeolite molecular sieve and comprises 80-99wt% of molecular sieves and 1-20wt% of molecular sieve modifiers; the components B are oxide loaded metallic elements and halogen and comprise 85-95wt% of oxide, 0.5-10wt% of total metallic elements and 0.1-5wt% of halogen; and the component A and the components B are formed through squashing or extruding after being mixed uniformly. The catalyst has the following characteristics that: (1) the total recovery of benzene, toluene and xylene is higher and selectivity is high; (2) the raw material treatment capacity is large; (3) the non-aromatic hydrocarbon liquid product can serve as the solvent oil or gasoline component; (4) C4 hydrocarbon and non-aromatic hydrocarbon liquid phase products in the gas phase product can circularly enter into the catalyst bed layer, thus not only balancing the reaction heat but also improving the total recovery of the aromatic hydrocarbon; and (5) the catalyst has high activity and long life.

The invention relates to a gastight, pressure-resistant storage and/or transport container (10) for low-molecular, reactive filling media, especially for hydrogen, oxygen, air, methane and/or methanol. Said container has a high filling pressure and is embodied in an essentially rotationally symmetric manner, having at least one connector cap (15) with a sealing device (16). The wall (12) of the container is essentially comprised of a thermoplastic synthetic material having at least one diffusion barrier (18, 19) system and/or a diffusion barrier and anti-corrosion system (18, 19). In order to offer protection for hydrogen and oxygen containers, the diffusion barrier system can be embodied in the form of at least one compact layer and/or can contain finely dispersed, distributed reactive nanoparticles (18) in the wall (12) of the container, in at least one composite film (28) and/or in at least one diffusion barrier layer (18).

The invention relates to a catalyst for preparing aromatic hydrocarbons by methanol conversion and a preparation method thereof, and mainly solves problems of complex technical route flow and low object product selectivity of a prior art. The catalyst comprises a) 20-80 parts of molecular sieve carrier, b) 0.1-20 parts of gallium element or oxide thereof carried by the molecular sieve carrier, c) 0.1-12 parts of lanthanum or phosphor element or oxide thereof, d) 20-80 parts of binder; and the molecular sieve comprises HZSM-5 and HMCM-22 in a mass ratio of 0.1-10:1. The invention also provides a preparation method of the catalyst. The above technical scheme well solves the problems and can be applied to industrial production of aromatic hydrocarbons by methanol conversion.

The invention relates to a catalyst for preparing aromatic hydrocarbon through methanol conversion and a preparation method thereof, and mainly solves the problems of complex technological process and low selectivity of the target product in the prior art. According to the invention, the catalyst comprises the following components of: by weight, a) 20-80 parts of a molecular sieve carrier; b) 0.5-12 parts of lanthanum element or its oxide which is carried on a); c) 0.5-10 parts of phosphor element or its oxide; d) 20-80 parts of a binder, wherein the molecular sieve comprises a mixture of HZSM-5 and at least one component selected from HZSM-11 or Hbeta molecular sieves; and the weight ratio of HZSM-5 to the at least one component selected from HZSM-11 or Hbeta is 0.1-10: 1. The technical scheme provided by the invention greatly solves the problems and can be used in the industrial production of aromatic hydrocarbon through methanol conversion.

Systems and methods for producing syngas are provided. A first hydrocarbon can be partially oxidized in the presence of an oxidant and one or more first catalysts at conditions sufficient to partially combust a portion of the first hydrocarbon to provide carbon dioxide, non-combusted first hydrocarbon, and heat. The non-combusted first hydrocarbon can be reformed in the presence of the heat generated in the partial oxidation step and the one or more first catalysts to provide a first syngas. Heat can be indirectly exchanged from the first syngas to a second hydrocarbon to reform at least a portion of the second hydrocarbon in the presence of steam and one or more second catalysts to provide a second syngas. A syngas, which can include the at least a portion of the first syngas, at least a portion of the second syngas, or a mixture thereof can be converted to provide one or more Fischer-Tropsch products, methanol, derivatives thereof, or combinations thereof.

A multifunctional methanol processing method belongs to the field of petrochemical and coal chemical technology. Methanol is used to produce low carbon olefins, gasoline and aromatics. The method adopts a two-step processing technique. The first step is to use methanol to produce low carbon olefins. The second step is to use low carbon olefins to synthesize aromatics and/or gasoline. The invention also provides a reactor and a regenerator used for the method. The method and the reactor and the regenerator can produce products with low carbon olefins, gasoline and aromatics which are urgently needed for economic construction, and have the advantages of flexible program, short process, low investment and high efficiency.

An environmentally beneficial method of producing methanol from varied sources of carbon dioxide including flue gases of fossil fuel burning power plants, industrial exhaust gases or the atmosphere itself. Converting carbon dioxide by an electrochemical reduction of carbon dioxide in a divided electrochemical cell that includes an anode in one compartment and a metal cathode electrode in a compartment that also contains an aqueous solution comprising methanol and an electrolyte. An anion-conducting membrane can be provided between the anode and cathode to produce at the cathode therein a reaction mixture containing carbon monoxide and hydrogen, which can be subsequently used to produce methanol while also producing oxygen in the cell at the anode. The oxygen produced at the anode can be recycled for efficient combustion of fossil fuels in power plants to exclusively produce CO₂ exhausts for capture and recycling as the source of CO₂ for the cell.

A process for satisfying variable power demand and a method for maximizing the monetary value of a synthesis gas stream are disclosed. One or more synthesis gas streams are produced by gasification of carbonaceous materials and passed to a power producing zone to produce electrical power during a period of peak power demand or to a chemical producing zone to produce chemicals such as, for example, methanol, during a period of off-peak power demand. The power-producing zone and the chemical-production zone which are operated cyclically and substantially out of phase in which one or more of the combustion turbines are shut down during a period of off-peak power demand and the syngas fuel diverted to the chemical producing zone. This out of phase cyclical operational mode allows for the power producing zone to maximize electricity output with the high thermodynamic efficiency and for the chemical producing zone to maximize chemical production with the high stoichiometric efficiency. The economic potential of the combined power and chemical producing zones is enhanced.

The invention discloses a preparation method of a catalyst with a core-shell structure for a low-temperature fuel cell, belonging to the technical field of fuel cells. In the catalyst with the core-shell structure prepared with the preparation method, platinum is taken as a shell, a metal alloy consisting of more than one of metals including ruthenium, platinum, iron, cobalt, nickel, copper, tin, iridium, gold and silver is taken as an inner core, and the shell and the inner core are loaded on a carbon carrier. The preparation method comprises the following preparation steps of: reducing a metal chloride or a metal nitrate with a reducing agent, and forming a core on the carbon carrier with a large specific surface area; stabilizing the core; and precipitating Pt on a core layer with a impregnation reduction method, a high-pressure organic sol method, a microwave method or an electrodeposition process to form the catalyst with the core-shell structure. Due to the adoption of the preparation method, the utilization ratio of noble metal platinum is increased, the cost of an electro-catalyst is reduced effectively, and the methanol oxidizing capability and oxygen reducing activity of the obtained catalyst are increased by 10.8 times and 8.7 times in maximum respectively in comparison to the mass ratio and activity of a commercial JM4100Pt/C catalyst.

The invention provides a non-naturally occurring microbial organism having an acetyl-CoA pathway and the capability of utilizing syngas or syngas and methanol. In one embodiment, the invention provides a non-naturally occurring microorganism, comprising one or more exogenous proteins conferring to the microorganism a pathway to convert CO, CO₂ and/or H₂ to acetyl-coenzyme A (acetyl-CoA), methyl tetrahydrofolate (methyl-THF) or other desired products, wherein the microorganism lacks the ability to convert CO or CO₂ and H₂ to acetyl-CoA or methyl-THF in the absence of the one or more exogenous proteins. For example, the microbial organism can contain at least one exogenous nucleic acid encoding an enzyme or protein in an acetyl-CoA pathway. The microbial organism is capable of utilizing synthesis gases comprising CO, CO₂ and/or H₂, alone or in combination with methanol, to produce acetyl-CoA. The invention additionally provides a method for producing acetyl-CoA, for example, by culturing an acetyl-CoA producing microbial organism, where the microbial organism expresses at least one exogenous nucleic acid encoding an acetyl-CoA pathway enzyme or protein in a sufficient amount to produce acetyl-CoA, under conditions and for a sufficient period of time to produce acetyl-CoA.

The invention relates to a catalyst for preparing arene by methanol conversion and a preparation method thereof. The problems of complex process route flow and low selectivity of a target product in the prior art are mainly solved. The problems are well solved by adopting the technical scheme that: the catalyst comprises the following components in part by weight: a) 20 to 80 parts of molecular sieve carrier, b) 0.1 to 12 parts of zinc element or oxide thereof carried on the molecular sieve carrier, c) 0.1 to 10 parts of nickel or phosphorus element or oxide thereof and d) 20 to 80 parts of adhesive, wherein the molecular sieve comprises a mixture of HZSM-5 and at least one of HZSM-11 and HMCM-22 molecular sieves, and the weight ratio of the HZSM-5 to the at least one of the HZSM-11 and the HMCM-22 is (0.1-10): 1. The catalyst can be used in the field of industrially producing the arene by methanol conversion.

The invention relates to a method for improving the yield of low-carbon olefin, which mainly solves the problem that the yield of the low-carbon olefin in the prior art is low. The invention discloses the method for improving the yield of the low-carbon olefin, which mainly comprises the following steps: (1) providing a fluidized bed reactor comprising a first reaction zone, a second reaction zone, a gas-solid separation zone, a catalyst steam stripping zone, and a catalyst circulation zone; (2) putting a raw material with methanol into the first reaction zone to contact a molecular sieve catalyst so as to produce a product with the low-carbon olefin which enters the second reaction zone along with the catalyst to contact a regenerated catalyst from a regenerator so as to produce a product substance flow with higher content of the low-carbon olefin; and (3) separating the product substance flow with the higher content of the low-carbon olefin and the catalyst, putting the product substance flow with the higher content of the low-carbon olefin into a separating section, performing steam stripping on the separated catalyst and putting part of the catalyst into the regenerator for regeneration, wherein part of the catalyst recycles back to the first reaction zone, thus the technical proposal solves the problems better and can be used in the industrial production of the low-carbonolefin.

PCT No. PCT/EP96/01180 Sec. 371 Date Jun. 10, 1998 Sec. 102(e) Date Jun. 10, 1998 PCT Filed Mar. 19, 1996 PCT Pub. No. WO97/03937 PCT Pub. Date Feb. 6, 1997A process for the synthesis of methanol on X-ray amorphous catalysts with a copper, zinc and zirconium oxide content in relative proportions of 10 to 70 weight percent of copper, 10 to 50 weight percent of zinc and 20 to 80 weight percent of zirconium. The process for the synthesis of methanol is distinguished by high space time yields.

The invention relates to a method for producing aromatic hydrocarbons by methanol conversion and mainly solves the problems of complex technological process and low selectivity of target products in the prior art. According to the invention, methanol is used as a raw material to react with a catalyst active component which is an HZSM-5 and HMCM-22 molecular sieve mixture containing rare earth metal or its oxide while the reaction temperature is 320-480 DEGC, the reaction pressure is 0.1-3.0MPa and weight hourly space velocity of the raw material is 0.5-6.0 h<-1>. The technical scheme greatly solves the problems and can be used in the industrial production of aromatic hydrocarbons by methanol conversion.

This invention relates to a method of making flat sheet asymmetric membranes, including cellulose diacetate/cellulose triacetate blended membranes, polyimide membranes, and polyimide/polyethersulfone blended membranes by formulating the polymer or the blended polymers dopes in a dual solvent mixture containing 1,3 dioxolane and a second solvent, such as N,N′-methylpyrrolidinone (NMP). The dopes are tailored to be closed to the point of phase separation with or without suitable non-solvent additives such as methanol, acetone, decane or a mixture of these non-solvents. The flat sheet asymmetric membranes are cast by the phase inversion processes using water as the coagulation bath and annealing bath. The dried membranes are coated with UV curable silicone rubber. The resulting asymmetric membranes exhibit excellent permeability and selectivity compared to the intrinsic dense film performances.

A partially hydrophobic precipitated silica having a methanol wettability of 10 to 49%, in particular with a DBP uptake on a dry basis of greater than 250 g/100 g and a mean particle size of 1 to 12 mum and/or a carbon content of 0.3 to 1.85% and/or a loss on drying of 2.6 to 10.0% and/or a pH value of 5.5 to 10.0, is prepared by mixing the amount of water-repellent agent with the precipitated silica suspension at very short residence time and low pH value, filtering off the solid substance, washing free of salt, drying, post-treating thermally and milling. The partially hydrophobic precipitated silica can be used in active substance formulations and active substance formulations of hydrolysis-sensitive substance and in defoaming agents.

The present invention discloses a novel electrode-catalyst for direct methanol fuel cell prepared by introducing a carbon precursor into pores of a wormhole-like molecular sieve template, carbonizing the carbon precursor, removing the molecular sieve template to obtain a wormhole-like mesoporous carbon having a high specific surface of 800-1000 m²/g and a pore size of 4-5 nm, and depositing catalyst metal such as Pt—Ru on the mesoporous carbon.