14results about "Oxygen compounds preparation by reduction" patented technology

Disclosed herein is a metal oxide aerogel catalyst for hydrogenation and / or hydrodeoxygenation, a method for preparing the same, and a method for hydrogenation and / or hydrodeoxygenation using the same. The catalyst consists of a metal and an oxide thereof, and the catalyst is in a form of an aerogel produced by supercritical drying. The catalyst has an effect of providing high hydrogenation and / or hydrodeoxygenation efficiency of an oxygen-containing compound.

Method to produce an upgraded oil using a lignin-rich feedstock, said method comprises the following steps: - providing a lignin-rich feedstock, wherein said lignin-rich feedstock comprises more than 60 wt% of lignin-based compounds obtained from delignification of biomass, where said lignin-based compounds are selected from the group consisting of: lignin-derived monomers, lignin-derived dimers, lignin-derived oligomers and combinations thereof; - providing an acidic composition having a pH of less than 1, said acidic composition comprising:  an acid selected from the group consisting of: sulfuric acid; an alkylsulfonic acid; and an arylsulfonic acid; and  an alcohol selected from the group consisting of C1-C8 linear alcohol and C3-C8 branched alcohol and mixtures thereof; - combining said lignin-rich feedstock with said acidic composition into a reaction mixture; - heating up said mixture to a temperature ranging from 25oC to 120oC; and - allowing sufficient time of reaction to convert at least a portion of said lignin-derived material into said at least one esterified lignin derivative; - separating said at least one esterified lignin derivative from said acidic composition; - performing a hydrodeoxygenation reaction on said at least one esterified lignin derivative, wherein the hydrodeoxygenation reaction is carried out in the presence of a hydrogen-rich source at a temperature ranging from 250oC to 400oC under a H2 pressure ranging from 15 to 50 bar, more preferably 35 bar, in the presence of a catalyst adapted for HDO reactions, for a period of time sufficient to result in an upgraded oil having a TAN of about 2.5 mg KOH / g and viscosity of 3.4 cP.

Methods and systems or devices for synthesis of valuable chemicals from carbon dioxide and hydrogen are provided. A high surface area hollow fiber catalytic membrane reactor such as with hollow fibers coated with a water permeable membrane material is used. The reactor also contains methanol synthesis component, and as needed, a dehydration catalyst component such that the two-step reaction takes place on the catalyst surface. Produced water permeates through the membrane, exiting the reactor immediately after it is formed. Unreacted reactants and products flow to the reactor exit. The valuable chemicals can be liquefied petroleum gas (LPG), dimethyl either (DME), methanol, ethanol, olefin, jet fuel or a combination thereof.

A cathode is disclosed that includes a conductive support substrate having an electrocatalytic coating containing nickel phosphide nanoparticles and a promoter. The conductive support substrate can incorporate a material to be reduced, such as CO or CO. The promoter is either incorporated in the electrolyte solution, in the conductive support, or adsorbed, deposited, or incorporated into the bulk cathode material, and alters the electrocatalytic properties by interacting with reaction intermediates to enhance carbon product selectivity. An electrochemical method for selectively producing hydrocarbon and / or carbohydrate products from CO or CO using water as a hydrogen source is also disclosed.

The invention relates to a process for the synthesis of methanol by catalytic hydrogenation of CO2, comprising at least one step (E1) in which the following are brought into contact within a reactor comprising at least one first reaction chamber (1) having at least one first inlet (10) and at least one first outlet (90): - a gas stream containing CO2 and H2 flowing from the first inlet (10) to the first outlet (90); and - a hydrogenation catalyst contained in the reaction chamber, between the first inlet (10) and the first outlet (90), whereby at least a part of the CO2 and H2 in the gas stream is converted into methanol and water during step (E1), characterized in that: • the pressure is at least 14 MPa (140 bar) during step (E1);and• the gas stream obtained at the end of step (E1), which includes residual CO2 and H2, is reinjected through a second inlet (20) into a reaction chamber containing a hydrogenation catalyst, this chamber being identical or different from that of step (E1). Figure for the abbreviation: Figure 4;

The invention relates to a process for the synthesis of methanol by catalytic hydrogenation of carbon dioxide, comprising at least one step (E1) where the following are brought into contact, within a reactor comprising at least one first reaction chamber (1) equipped with at least one first inlet (10) and at least one first outlet (80, 90): - a gaseous flow containing carbon dioxide CO2 and dihydrogen H2 circulating from said first inlet (10) of the first reaction chamber to said first outlet (90) of the first reaction chamber; and a hydrogenation catalyst (30, 40, 50, 60) contained in said first reaction chamber, between said first inlet (10) and said first outlet (80, 90), whereby at least a part of the carbon dioxide CO2 and dihydrogen H2 of the gas stream is converted into methanol and water during step (E1), characterized in that, during step (E1): • the pressure is greater than or equal to 14 MPa;and • the inlet velocity of the gas stream into the first reaction chamber (1) is at least 0.4 cm / s; and • the first reaction chamber (1) is provided with at least one second outlet (70) towards which the water and methanol, produced in liquid form, are carried by gravity. Figure for the abstract: Figure 1;

A method of producing renewable fuel of non-biological origin, wherein carbonaceous feedstock is subjected to reforming, thereby converting the carbonaceous feedstock to syngas containing hydrogen and one or more carbon oxides. The reforming uses energy (e.g., heat and / or light) generated from electricity, at least some of which is renewable electricity of non-biological origin. The reforming produces syngas, a portion of which has an energy content that is associated with the renewable electricity of non-biological origin. The syngas is fed to one or more processes to produce fuel comprising the renewable fuel of non- biological origin (e.g., a purification process to produce hydrogen and / or a synthesis wherein at least the hydrogen is reacted with one or more carbon oxides). Advantageously, at least some of the carbonaceous feedstock can be renewable.

A process for producing acetic acid comprising: (a) reacting, via a catalytic partial oxidation (CPO) reaction, a CPO reactant mixture in a CPO reactor to produce a hydrogen-lean syngas; wherein the hydrocarbons comprise equal to or greater than about 3 mol% C2+ alkanes; wherein the hydrogen-lean syngas comprises hydrogen, carbon monoxide, carbon dioxide, and unreacted hydrocarbons; and wherein the hydrogen-lean syngas is characterized by a hydrogen to carbon monoxide (H2 / CO) molar ratio of from about 0.7 to about 1.3; (b) feeding at least a portion of the hydrogen-lean syngas and dimethyl ether (DME) to a DME carbonylation unit to produce methyl acetate and a hydrogen-enriched syngas characterized by a H2 / CO molar ratio of from about 1.8 to about 2.2; and (c) feeding at least a portion of the methyl acetate and water to a methyl acetate hydrolysis reaction zone to produce acetic acid and a methanol stream.

The present specification describes a catalyst for the hydrodeoxygenation of an alcohol, the catalyst comprising: from 0.1 wt% to 1.5 wt% palladium on a zirconia support; from 1.0 wt% to 5.0 wt% of molybdenum; and from 0.05 wt% to 0.5 wt% of tin. A method for making the catalyst and a hydrodeoxygenation process using the catalyst are also described.

[Problem] To provide a reduction catalyst of which the catalytic activity is hardly reduced even in the presence of a poisonous substance. [Solution] This reduction catalyst comprises: a carrier containing at least one among titania, alumina, silica, ceria, zirconia, magnesia, and activated carbon; and at least one metal which is selected from among elements belonging to groups 8, 9, and 10 in the periodic table and is supported on the carrier.

The present invention provides a process for producing dialkyl succinate, the process comprising hydrogenating dialkyl maleate in a multi-stage process comprising at least two hydrogenation stages wherein: in a first hydrogenation stage a feed stream comprising the dialkyl maleate is exposed to hydrogenating conditions over a catalyst at a temperature T1 to produce a first stream comprising dialkyl succinate and unsaturated compound(s), and in a second hydrogenation stage the first stream is exposed to hydrogenating conditions at a temperature T2 to produce a second stream comprising dialkyl succinate and a lower concentration of the unsaturated compound(s) than the first stream; wherein T2 is less than T1.

The utility model relates to the technical field of chemical engineering, in particular to a novel reactor for continuously producing methyl glycolate and ethylene glycol products, which comprises a heating furnace body, an upper group of independent reaction systems and a lower group of independent reaction systems are symmetrically arranged in the heating furnace body, and each group of reaction systems comprises a material inlet. A gas-phase material and a liquid-phase material are gasified by a preheater after entering, and then enter a first reaction tube after passing through a gas distributor, a second reaction tube is connected behind the first reaction tube, and discharge tubes are arranged between the first reaction tube and the second reaction tube and behind the second reaction tube and are connected to a condenser; liquid condensed by the condenser is collected and separated by a gas-liquid separator, and the bottom of the gas-liquid separator is connected with a product extraction pipe; a gas phase condensed by the condenser is connected to the dryer through a pipeline, and an outlet of the dryer is connected to the material inlet through a pipeline. According to the reactor provided by the utility model, through the structural design, three procedures of hydrogenation reaction, activation reaction and hydrogen recycling are integrated together, so that the production process is greatly simplified, and the production efficiency is improved.

An apparatus for forming C1 to C5 alcohol, carboxylic acid, or mixture thereof from carbon dioxide and hydrogen is described. The apparatus comprises: a dielectric barrier discharge, DBD, device arranged to generate a plasma; and a passageway having an inlet for the carbon dioxide and the hydrogen and an outlet for the C1 to C5 alcohol, carboxylic acid, or mixture thereof and including therein a catalyst comprising nickel and / or cobalt and / or copper on a support. The passageway extends, at least in part, through the DBD device wherein, in use, the carbon dioxide is exposed to the catalyst in the presence of the hydrogen in the generated plasma, thereby forming the C1 to C5 alcohol, carboxylic acid, or mixture thereof from at least some of the carbon dioxide and the hydrogen. The DBD devices comprises a water electrode. A method and a catalyst are also described.