Gekoppelte Herstellung von Wasserstoff und Ethylen in einem Membranreaktor

Jiang, Heqing; Cao, Zhilong; Schirrmeister, Steffen; Schiestel, Thomas; Caro, Jürgen

doi:10.1002/ange.201000664

Cited by 11 publications

(3 citation statements)

References 44 publications

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“…Despite the lack of reports dedicated to membrane reactors for CO 2 ‐OCM, membrane reactors have been studied for O 2 ‐OCM since the 1990s [178] . Because of the high operating temperature of oxygen‐permeable membranes, there exist potential engineering challenges associated with the mechanical and chemical stability of the membranes over prolonged high‐temperature operations [175] …”

Section: Reaction Engineering Approachesmentioning

confidence: 99%

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Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

et al. 2020

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Decarbonizing the chemical industry will eventually entail using CO 2 as a feedstock for chemical synthesis. However, many chemical syntheses involve CO 2 reduction using inputs such as renewable hydrogen. In this review, chemical processes are discussed that use CO 2 as an oxidant for upgrading hydrocarbon feedstocks. The captured CO 2 is inherently reduced by the hydrocarbon co-reactants without consuming molecular hydrogen or renewable electricity. This CO 2 utilization approach can be potentially applied to synthesize eight emission-intensive molecules, including olefins and epoxides. Catalytic systems and reactor concepts are discussed that can overcome practical challenges, such as thermodynamic limitations, overoxidation, coking, and heat management. Under the best-case scenario, these hydrogen-free CO 2 reduction processes have a combined CO 2 abatement potential of approximately 1 gigatons per year and avoid the consumption of 1.24 PWh renewable electricity, based on current market demand and supply.

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Section: Reaction Engineering Approachesmentioning

confidence: 99%

“…For instance, Jiang et al. used BaCo x Fe y Zr 1‐ x ‐ y O 3‐ δ hollow‐fiber membranes for H 2 O−ODHE and achieved 59 % ethane conversion and 89 % ethylene selectivity at 800 °C [175] . Dimitrakopoulos et al.…”

Section: Reaction Engineering Approachesmentioning

confidence: 99%

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

et al. 2020

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“…In recent years, coupling catalytic reactions in membrane reactors has been regarded as an efficient way to achieve process intensification . Ammonia synthesis, conversion of benzene into phenol, and water splitting have been performed with high efficiency in membrane reactors . Here, we present a membrane reactor with an MIEC membrane and catalyst to coproduce ASG and LFSG from water, air, and methane in one step (see Figure S1 c in the Supporting Information).…”

Section: Figurementioning

confidence: 99%

Integration of Nine Steps into One Membrane Reactor To Produce Synthesis Gases for Ammonia and Liquid Fuel

2016

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The synthesis of ammonia and liquid fuel are two important chemical processes in which most of the energy is consumed in the production of H2 /N2 and H2 /CO synthesis gases from natural gas (methane). Here, we report a membrane reactor with a mixed ionic-electronic conducting membrane, in which the nine steps for the production of the two types of synthesis gases are shortened to one step by using water, air, and methane as feeds. In the membrane reactor, there is no direct CO2 emission and no CO or H2 S present in the ammonia synthesis gas. The energy consumption for the production of the two synthesis gases can be reduced by 63 % by using this membrane reactor. This promising membrane reactor process has been successfully demonstrated by experiment.

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CO₂‐stabile und cobaltfreie Zweiphasenmembranen zur Sauerstoffabtrennung

et al. 2010

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, die in Gegenwart von CO 2 zur Bildung von Carbonaten neigen.[7] Wenn Perowskite als Oxidationskatalysatoren verwendet werden, kann der negative Effekt des Produkts CO 2 allerdings bei Durchführung der Reaktion im Mikrowellenfeld vermindert werden. [8,9] Die genannten Probleme können durch neuartige cobalt-und erdalkalimetallfreie Zweiphasenmembranen gelöst werden. Diese bestehen aus einander durchdringenden Netzwerken je eines Sauerstoffionenleiters (Festoxid-Elektrolyt) und eines elektrischen Leiters (interne Kurzschlusselektrode). In einer erweiterten Sichtweise dieses Konzeptes können die Zweiphasenmembranen auch aus MIECM mit variierenden Transportgeschwindigkeiten für Sauerstoffionen und Elektronen bestehen. [10] Die ersten Zweiphasenmembranen bestanden aus Sauerstoffionenleitern und Edelmetallen: (Bi 2 O 3 ) 0.74 SrO 0.26 -Ag, [11] Bi 1.5 Y 0.3 Sm 0.2 O 3 -Ag, [12] Bi 1.5 Er 0.5 O 3 -Ag, [13] Bi 1.6 Y 0.4 O 3 -Ag [14] und YSZ-Pd.[15] Die großtechnische Anwendbarkeit dieser Materialien ist jedoch durch hohe Materialkosten und eine große Diskrepanz der thermischen Ausdehnungskoeffizienten (CTE) von keramischen und metallischen Phasen sowie durch eine geringe Sauerstoffpermeabilität eingeschränkt. Bei einem anderen Ansatz wurden Oxide mit Perowskit-oder Fluorit-Struktur anstelle der Edelmetalle als elektrische Leiter genutzt. [16][17][18] Hier ergibt sich allerdings wieder der Nachteil der geringen CO 2 -Stabilität der verwendeten Perowskite. Aus thermodynamischen Betrachtungen und gravimetrischen Untersuchungen geht hervor, dass diese Oxide idealerweise aus Lanthanoiden und Übergangsmetallen bestehen sollen, da diese sehr beständig gegen Carbonatbildung sind. [19,20] Hier berichten wir über die Präparation und Charakterisierung neuartiger erdalkalimetallfreier Zweiphasenmembranen 40NFO-60CGO, die aus 40 Gew.-% NiFe 2 O 4 mit Spinell-Struktur und 60 Gew.-% Ce 0.9 Gd 0.1 O 2Àd mit FluoritStruktur bestehen. Diese Membranen wurden einerseits durch Mischen der gepulverten Komponenten mit anschlie-

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Gekoppelte Herstellung von Wasserstoff und Ethylen in einem Membranreaktor

Cited by 11 publications

References 44 publications

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

Integration of Nine Steps into One Membrane Reactor To Produce Synthesis Gases for Ammonia and Liquid Fuel

CO₂‐stabile und cobaltfreie Zweiphasenmembranen zur Sauerstoffabtrennung

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Gekoppelte Herstellung von Wasserstoff und Ethylen in einem Membranreaktor

Cited by 11 publications

References 44 publications

Synthesizing High‐Volume Chemicals from CO2 without Direct H2 Input

Synthesizing High‐Volume Chemicals from CO2 without Direct H2 Input

Integration of Nine Steps into One Membrane Reactor To Produce Synthesis Gases for Ammonia and Liquid Fuel

CO2‐stabile und cobaltfreie Zweiphasenmembranen zur Sauerstoffabtrennung

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Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

Synthesizing High‐Volume Chemicals from CO₂ without Direct H₂ Input

CO₂‐stabile und cobaltfreie Zweiphasenmembranen zur Sauerstoffabtrennung