The invention relates to a method (100) for producing a target compound, wherein a paraffin is subjected to an oxidative dehydrogenation (1) with oxygen to obtain an olefin, and wherein the olefin is subjected to a hydroformylation (2) with carbon monoxide to obtain an aldehyde, wherein the paraffin and the olefin have a carbon chain having a first carbon number and the aldehyde has a carbon chain having a second carbon number which is one greater than the first carbon number. It is provided that carbon dioxide is formed as a by-product in the oxidative dehydrogenation (1), that the carbon dioxide is subjected to dry reforming (3) at least in part with methane to obtain carbon monoxide and hydrogen, and that the carbon monoxide obtained in the dry reforming (3) and/or the hydrogen obtained in the dry reforming (3) is supplied to the hydroformylation (2). A corresponding installation is also the subject matter of the invention.

Disclosed are gas-phase ODH and OCP processes for converting alkanes (e.g., C.sub.2H.sub.6 and C.sub.3H.sub.8) to alkenes (e.g., C.sub.2H.sub.4 and C.sub.3H.sub.6) or oxygenates (e.g., methanol, ethanol, isopropanol, or propylene oxide) or converting alkenes (e.g., ethylene and propene) and oxygenates (e.g., methanol, ethanol, isopropanol or propylene oxide) to longer carbon-chain alkenes or longer carbon-chain alkanes with or without solid catalysts.

A novel catalyst composition and its use in the dehydrogenation of alkanes to olefins. The catalyst comprises a Group VIII noble metal and a metal selected from the group consisting of manganese, vanadium, chromium, titanium, and combinations thereof, on a support. The Group VIII noble metal can be platinum, palladium, osmium, rhodium, rubidium, iridium, and combinations thereof. The support can be silicon dioxide, titanium dioxide, aluminum oxide, silica-alumina, cerium dioxide, zirconium dioxide, magnesium oxide, metal modified silica, silica-pillared clays, silica-pillared micas, metal oxide modified silica-pillared mica, silica-pillared tetrasilicic mica, silica-pillared taeniolite, zeolite, molecular sieve, and combinations thereof. The catalyst composition is an active and selective catalyst for the catalytic dehydrogenation of alkanes to olefins.

Mixed metal oxide catalysts having an amorphous content of not less than 40 wt. % are prepared by calcining the catalyst precursor fully or partially enclosed by a porous material having a melting temperature greater than 600° C. in an inert container including heating the catalyst precursor at a rate from 0.5 to 10° C. per minute from room temperature to a temperature from 370° C. to 540° C. under a stream of pre heated gas chosen from steam and inert gas and mixtures thereof at a pressure of greater than or equal to 1 psig having a temperature from 300° C. to 540° C. and holding the catalyst precursor at that temperature for at least 2 hours and cooling the catalyst precursor to room temperature.

Disclosed is a catalyst system, its methods of preparation and its use for producing, among others, alkenes and/or saturated or unsaturated oxygenates and, which include at least one of an aldehyde and an acid (such as propyl aldehyde, acrolein, acrylic acid, isobutyl aldehyde, methacrolein, methacrylic acid), comprising subjecting the corresponding an alcohol or a diol selected from the group consisting of propanol, propanediol and isobutanol that is derivable from biomass, to a vapor phase process over the catalytic system described herein in the presence of a gas mixture of oxygen, air or nitrogen and/or other suitable diluting gas. In the case where one of 1-propanol, or 1,2-propanediol or 1,3-propanediol or a mixture thereof is subjected to a vapor phase catalytic process over the said catalytic system in the presence of air or oxygen, and a co-fed gas, such as nitrogen or other diluting gas, the product is at least one of propylene, propyl aldehyde, acrolein and acrylic acid. In the case where isobutanol is subjected to such a process, the product is at least one of isobutylene, isobutyl aldehyde, methacrolein and methacrylic acid. The catalyst system comprises a single catalytic zone or multi-catalytic zones, in each of which the composition of the co-feed and other reaction parameter can be independently controlled.

Provided in this disclosure are oxidative dehydrogenation catalysts that include a mixed metal oxide having the empirical formula:
Mo.sub.1.0V.sub.0.12-0.49Te.sub.0.05-0.17Nb.sub.0.10-0.20O.sub.d
wherein d is a number to satisfy the valence of the oxide. The oxidative dehydrogenation catalyst is characterized by having XRD diffraction peaks (2θ degrees) at 22±0.2, 27±0.2, 28.0±0.2, and 28.3±0.1. The disclosure also provides methods of making the catalysts that include wet ball milling.

A catalyst for oxidative dehydrogenation of alkanes includes a substrate including an oxide; at least one promoter including a transition metal or a main group element of the periodic table; and an oxidation-active transition metal. The catalyst is multimetallic.

This document relates to oxidative dehydrogenation catalysts that include molybdenum, vanadium, and oxygen.

Oxidative dehydrogenation (ODH) of alkanes to alkenes, e.g., propane to propylene, may use solid phase oxygen in VO.sub.x based mixed oxide catalysts. Beyond catalysis, the metal oxide species provide lattice oxygen. The catalysts can be prepared by depositing vanadium oxide(s) on θ-Al.sub.2O.sub.3 mixed with various alkaline earth metal oxide support, e.g., CaO, MgO, BaO, etc. Surface area, acidity, and reduction properties of the catalyst systems can be modified by the support. The catalysts may allow multistage reduction of VO.sub.x, indicating different VO.sub.x species. Vanadium on θ-Al.sub.2O.sub.3/CaO can suppress COx species, while vanadium on θ-Al.sub.2O.sub.3/BaO can yield at least ca. 49% olefins.

A method for reducing carbon dioxide to manufacture a multi-carbon hydrocarbon compound includes steps as follows. A reduction reaction with separation and purification system is provided, which includes a carbon dioxide absorption tower, a reactor, a gas-liquid separation device, a liquid-phase purification device and a gas-phase purification device. An absorption step is performed, wherein a carbon dioxide gas is absorbed to form a mixed solution. A photocatalysis step is performed, wherein the mixed solution is reacted with a photocatalyst to form a carbon-based compound. A separation step is performed, wherein the carbon-based compound is separated to form a liquid-phase mixture and a gas-phase mixture. A liquid-phase purification step is performed, wherein the liquid-phase mixture is purified. A gas-phase purification step is performed, wherein the gas-phase mixture is separated and purified to form a multi-carbon hydrocarbon compound.