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Применить Всего найдено 8. Отображено 6.
09-07-2015 дата публикации

Production of maleic or fumaric acid from levulinic acid

Номер: US20150191411A1
Автор: Anargyros Chatzidimitriou, Jesse Quentin Bond
Принадлежит: SYRACUSE UNIVERSITY

The production of maleic acid and fumaric acid (or the anhydride form of either, maleic anhydride) via gas-phase, oxidative cleavage of levulinic acid in a single packed bed reactor over a reducible oxide catalyst. The production may be carried out in an initial mixing vessel into which levulinic acid is continuously charged and mixed with both inert (He, N 2 , Ar, etc.) and oxidizing (O 2 , air, etc.) gases. The feed stream can then be safely heated to reaction temperature, which generally ranges from 200-500° C., without initiating polymerization, in a second stage preheater that thermally equilibrates the gaseous mixture of LA, O2, and inert diluent and fed to a third stage catalytic reactor for final processing.

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Номер записи: 1
15-07-2021 дата публикации

PRODUCTION OF PROTOANEMONIN BY OXIDATION OF LEVULINIC ACID OR ANGELICALACTONE ISOMERS

Номер: US20210214325A1
Автор: Bond Jesse Quentin, ZHU Ran
Принадлежит: SYRACUSE UNIVERSITY

A process for forming protoanemonin from an amount of levulinic acid or an amount of α-Angelica lactone using oxidative dehydrogenation. Biomass-derived levulinic acid (LA) is a green platform chemical and, using an oxidative scission pathway can be transformed into cyclic intermediates, namely angelicalactones to form protoanemonin. The oxidative dehydrogenation may be heterogeneously catalyzed in a gas-phase to perform aerobic oxidation using a solid oxide such as vanadium oxide. Protoanemonin is an intriguing polyfunctional molecule that is uniquely suited to bio-based production, and can be synthesized in yields from 50%-75% during periods of transient reactor operation. 1. A process of forming protoanemonin , comprising the steps of:providing an amount of levulinic acid or an amount of α-Angelica lactone; andperforming oxidative dehydrogenation of the amount of levulinic acid or the amount of α-Angelica lactone to form an amount of protoanemonin.2. The process of claim 1 , wherein the step of oxidative dehydrogenation is heterogeneously catalyzed.3. The process of claim 1 , wherein the step of oxidative dehydrogenation is performed in a gas-phase.4. The process of claim 1 , wherein the step of oxidative dehydrogenation comprises aerobic oxidation.5. The process of claim 1 , wherein the step of oxidative dehydrogenation is performed with a solid oxide catalyst.6. The process of claim 5 , wherein the solid oxide catalyst is performed with vanadium oxide.7. The process of claim 1 , wherein the step of oxidative dehydrogenation includes the formation of β-Angelica lactone as an intermediate product.8. The process of claim 1 , wherein the step of oxidative dehydrogenation is performed at a temperature of 473 Kelvin. This application claims priority to U.S. Provisional Application No. 62/960,848, filed on Jan. 14, 2020.This invention was made with government support under Grant No. 1454346 awarded by the National Science Foundation (NSF). The government has certain ...

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Номер записи: 2
13-12-2018 дата публикации

Production of maleic acid, fumaric acid, or maleic anhydride from levulinic acid analogs

Номер: US20180354883A1
Автор: Anargyros Chatzidimitriou, Jesse Quentin Bond
Принадлежит: SYRACUSE UNIVERSITY

A system and method for the conversion of a levulinate ester to maleic anhydride using a reducible oxide catalyst. Levulinic acid oxidation delivers maleic anhydride in good yields without viscosity and stability issues that make continuous production problematic. Due to the fact that levulinate esters are more amenable to processing, the conversion of levulinate esters to maleic anhydride represents an appropriate for the commercial production of maleic anhydride from renewable resources.

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Номер записи: 3
01-12-2011 дата публикации

Integrated process and apparatus to produce hydrocarbons from aqueous solutions of lactones, hydroxy-carboxylic acids, alkene-carboxylic acids, and/or alcohols

Номер: CA2783638A1
Автор: David Martin Alonso, Dong Wang, James A. Dumesic, Jesse Quentin Bond, Ryan M. West
Принадлежит: WISCONSIN ALUMNI RESEARCH FOUNDATION

A process for producing hydrocarbons, especially C8 or larger alkenes, from lactones, hydroxy-carboxylic acids, alkene-carboxylic acids, alcohols, or mixtures thereof, or an aqueous solution of lactones, hydroxy-carboxylic acids, alkene-carboxylic acids, alcohols, or mixtures thereof is described. The process includes reacting the starting materials with a first acid catalyst to yield a first product mixture. The first product mixture is then reacted with a second acid catalyst (which can be the same or different from the first acid catalyst) to yield a second product mixture comprising hydrocarbons, for example alkenes having a chain length of C8+. The process is suitable for producing hydrocarbons that can be used in or as liquid transportation fuels.

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Номер записи: 4
21-11-2012 дата публикации

Integrated process and apparatus to produce hydrocarbons from aqueous solutions of lactones, hydroxy-carboxylic acids, alkene-carboxylic acids, and/or alcohols

Номер: EP2523929A2
Автор: David Martin Alonso, Dong Wang, James A. Dumesic, Jesse Quentin Bond, Ryan M. West
Принадлежит: WISCONSIN ALUMNI RESEARCH FOUNDATION

A process for producing hydrocarbons, especially C 8 or larger alkenes, from lactones, hydroxy-carboxylic acids, alkene-carboxylic acids, alcohols, or mixtures thereof, or an aqueous solution of lactones, hydroxy-carboxylic acids, alkene-carboxylic acids, alcohols, or mixtures thereof is described. The process includes reacting the starting materials with a first acid catalyst to yield a first product mixture. The first product mixture is then reacted with a second acid catalyst (which can be the same or different from the first acid catalyst) to yield a second product mixture comprising hydrocarbons, for example alkenes having a chain length of C 8+ . The process is suitable for producing hydrocarbons that can be used in or as liquid transportation fuels.

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Номер записи: 5
17-11-2015 дата публикации

Production of maleic or fumaric acid from levulinic acid

Номер: US9187399B2
Автор: Anargyros Chatzidimitriou, Jesse Quentin Bond
Принадлежит: SYRACUSE UNIVERSITY

The production of maleic acid and fumaric acid (or the anhydride form of either, maleic anhydride) via gas-phase, oxidative cleavage of levulinic acid in a single packed bed reactor over a reducible oxide catalyst. The production may be carried out in an initial mixing vessel into which levulinic acid is continuously charged and mixed with both inert (He, N 2 , Ar, etc.) and oxidizing (O 2 , air, etc.) gases. The feed stream can then be safely heated to reaction temperature, which generally ranges from 200-500° C., without initiating polymerization, in a second stage preheater that thermally equilibrates the gaseous mixture of LA, O2, and inert diluent and fed to a third stage catalytic reactor for final processing.

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Номер записи: 6