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  1. Article ; Online: Methanol Synthesis with Steel-Mill Gases

    Kai Girod / Heiko Lohmann / Stefan Schlüter / Stefan Kaluza

    Processes, Vol 8, Iss 1673, p

    Simulation and Practical Testing of Selected Gas Utilization Scenarios

    2020  Volume 1673

    Abstract: The utilization of CO 2 -containing steel-mill gases for synthesis of methanol was investigated. Four different scenarios with syngas derived from steel-mill gases were considered. A process model for an industrial methanol production including gas ... ...

    Abstract The utilization of CO 2 -containing steel-mill gases for synthesis of methanol was investigated. Four different scenarios with syngas derived from steel-mill gases were considered. A process model for an industrial methanol production including gas recirculation was applied to provide realistic conditions for catalyst performance tests. A long-term test series was performed in a close-to-practice setup to demonstrate the stability of the catalyst. In addition, the experimental results were used to discuss the quality of the simulation results. Kinetic parameters of the reactor model were fitted. A comparison of two different kinetic approaches and the experimental results revealed which approach better fits CO-rich or CO 2 -rich steel-mill gases.
    Keywords Carbon2Chem ® ; methanol synthesis ; steel-mill gases ; process simulation ; MegaMax ® 800 ; gas recirculation ; Chemical technology ; TP1-1185 ; Chemistry ; QD1-999
    Language English
    Publishing date 2020-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Electrochemical CO2 reduction toward multicarbon alcohols - The microscopic world of catalysts & process conditions

    Theresa Jaster / Alina Gawel / Daniel Siegmund / Johannes Holzmann / Heiko Lohmann / Elias Klemm / Ulf-Peter Apfel

    iScience, Vol 25, Iss 4, Pp 104010- (2022)

    2022  

    Abstract: Summary: Tackling climate change is one of the undoubtedly most important challenges at the present time. This review deals mainly with the chemical aspects of the current status for converting the greenhouse gas CO2 via electrochemical CO2 reduction ... ...

    Abstract Summary: Tackling climate change is one of the undoubtedly most important challenges at the present time. This review deals mainly with the chemical aspects of the current status for converting the greenhouse gas CO2 via electrochemical CO2 reduction reaction (CO2RR) to multicarbon alcohols as valuable products. Feasible reaction routes are presented, as well as catalyst synthesis methods such as electrodeposition, precipitation, or sputtering. In addition, a comprehensive overview of the currently achievable selectivities for multicarbon alcohols in CO2RR is given. It is also outlined to what extent, for example, modifications of the catalyst surfaces or the use of bifunctional compounds the product distribution is shifted. In addition, the influence of varying electrolyte, temperature, and pressure is described and discussed.
    Keywords Catalysis ; Electrochemistry ; Science ; Q
    Language English
    Publishing date 2022-04-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article ; Online: Electrochemical CO2 reduction - The macroscopic world of electrode design, reactor concepts & economic aspects

    Alina Gawel / Theresa Jaster / Daniel Siegmund / Johannes Holzmann / Heiko Lohmann / Elias Klemm / Ulf-Peter Apfel

    iScience, Vol 25, Iss 4, Pp 104011- (2022)

    2022  

    Abstract: Summary: For the efficient electrochemical conversion of CO2 into valuable chemical feedstocks, a well-coordinated interaction of all electrolyzer compartments is required. In addition to the catalyst, whose role is described in detail in the part “ ... ...

    Abstract Summary: For the efficient electrochemical conversion of CO2 into valuable chemical feedstocks, a well-coordinated interaction of all electrolyzer compartments is required. In addition to the catalyst, whose role is described in detail in the part “Electrochemical CO2 Reduction toward Multicarbon Alcohols - The Microscopic World of Catalysts & Process Conditions” of this divided review, the general cell setups, design and manufacture of the electrodes, membranes used, and process parameters must be optimally matched. The authors' goal is to provide a comprehensive review of the current literature on how these aspects affect the overall performance of CO2 electrolysis. To be economically competitive as an overall process, the framework conditions, i.e., CO2 supply and reaction product treatment must also be considered. If the key indicators for current density, selectivity, cell voltage, and lifetime of a CO2 electrolyzer mentioned in the techno-economic consideration of this review are met, electrochemical CO2 reduction can make a valuable contribution to the creation of closed carbon cycles and to a sustainable energy economy.
    Keywords Catalysis ; Electrochemistry ; Economics ; Science ; Q
    Subject code 660
    Language English
    Publishing date 2022-04-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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