CO 2 utilization with a novel dual function material (DFM) for capture and catalytic conversion to synthetic natural gas: An update

Duyar, Melis S.; Wang, Shuoxun; Arellano-Treviño, Martha A.; Farrauto, Robert J.

doi:10.1016/j.jcou.2016.05.003

Cited by 195 publications

(124 citation statements)

References 41 publications

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“…The CO2 adsorbed and methanation in mmol per gram on Al2O3 supported K2CO3, Na2CO3, and MgO powder adsorbents with weight loadings from 5% to 20% were previously reported [30]. In this study K2CO3 and Na2CO3 showed the largest CO2 adsorption relative to Al2O3 supported CaO and MgO.…”

Section: Na2co3 Loading Studysupporting

confidence: 72%

“…Based on the methanation capacities, DFM composed of 5% Ru, 10% Na2CO3/Al2O3 generated the most methane (1.05 mol CH4/kg of DFM) compared to other adsorbents at the same loading [30]. Herein, further studies were conducted on Al2O3 supported Ru-Na2CO3 DFM.…”

Section: Na2co3 Loading Studymentioning

confidence: 99%

“…A super-dry reforming process involving chemical looping in which CO 2 is utilized for enhancing CO production at 750 • C has been reported. Nickel catalyzes the dry reforming of CH 4 makes it unique for this process relative to commonly used Ni, which when oxidized will not reduce under the conditions of this process [30][31][32]. This paper reports cyclic aging studies from a simulated flue gas demonstrating stable repeatable cycles of CO 2 adsorption and methanation.…”

Section: Introductionmentioning

confidence: 99%

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The Role of Ruthenium in CO2 Capture and Catalytic Conversion to Fuel by Dual Function Materials (DFM)

et al. 2017

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Development of sustainable energy technologies and reduction of carbon dioxide in the atmosphere are the two effective strategies in dealing with current environmental issues. Herein we report a Dual Function Material (DFM) consisting of supported sodium carbonate in intimate contact with dispersed Ru as a promising catalytic solution for combining both approaches. The Ru-Na 2 CO 3 DFM deposited on Al 2 O 3 captures CO 2 from a flue gas and catalytically converts it to synthetic natural gas (i.e., methane) using H 2 generated from renewable sources. The Ru in the DFM, in combination with H 2 , catalytically hydrogenates both adsorbed CO 2 and the bulk Na 2 CO 3 , forming methane. The depleted sites adsorb CO 2 through a carbonate reformation process and in addition adsorb CO 2 on its surface. This material functions well in O 2 -and H 2 O-containing flue gas where the favorable Ru redox property allows RuO x , formed during flue gas exposure, to be reduced during the hydrogenation cycle. As a combined CO 2 capture and utilization scheme, this technology overcomes many of the limitations of the conventional liquid amine-based CO 2 sorbent technology.Keywords: supported Ru and sodium carbonate; dual function material; CO 2 capture in flue gas; conversion to synthetic natural gas; redox properties of Ru

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Section: Na2co3 Loading Studysupporting

confidence: 72%

Section: Na2co3 Loading Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Role of Ruthenium in CO2 Capture and Catalytic Conversion to Fuel by Dual Function Materials (DFM)

et al. 2017

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“…The concept of producing chemicals and fuels directly from industrial flue gases over a dual‐function material has been previously applied to the production of syngas (CO and H 2 ), a useful reactant for methanol synthesis . In this process, called tri‐reforming of methane, a synergetic combination of CO 2 reforming, steam reforming, and partial oxidation of methane occurs in a single reactor at 850 °C with supported nickel catalysts . In another example, the in situ capture and methanation of CO 2 has been studied over a dual‐function material in the form of a coated monolith to produce synthetic CH 4 by using H 2 at 320 °C .…”

Section: Combined Co2 Capture and Utilizationmentioning

confidence: 99%

Carbon Capture and Utilization Update

et al. 2017

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In recent years, carbon capture and utilization (CCU) has been proposed as a potential technological solution to the problems of greenhouse‐gas emissions and the ever‐growing energy demand. To combat climate change and ocean acidification as a result of anthropogenic CO2 emissions, efforts have already been put forth to capture and sequester CO2 from large point sources, especially power plants; however, the utilization of CO2 as a feedstock to make valuable chemicals, materials, and transportation fuels is potentially more desirable and provides a better and long‐term solution than sequestration. The products of CO2 utilization can supplement or replace chemical feedstocks in the fine chemicals, pharmaceutical, and polymer industries. In this review, we first provide an overview of the current status of CO2‐capture technologies and their associated challenges and opportunities with respect to efficiency and economy followed by an overview of various carbon‐utilization approaches. The current status of combined CO2 capture and utilization, as a novel efficient and cost‐effective approach, is also briefly discussed. We summarize the main challenges associated with the design, development, and large‐scale deployment of CO2 capture and utilization processes to provide a perspective and roadmap for the development of new technologies and opportunities to accelerate their scale‐up in the near future.

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“…Improvement in their catalytic performance has been reported with hydrotalcite-derived Ni catalysts [13][14][15], as well as when combining nickel with ruthenium in the same bimetallic catalyst [16]. The use of hydrotalcite-derived Ni materials has also another important feature, i.e., the combination of a classical CO 2 sorbent (hydrotalcite) [17][18][19] with a methanation Ni catalyst in the same dual functional material [20][21][22]. This opens the door for the integration of CO 2 capture and utilization in the same material, with close active sites, which might be useful for integration in multifunctional reactors, as reported before but with layered catalytic beds [3].In this work, ruthenium, hydrotalcite-derived nickel (NiMgAl), and bimetallic nickel-ruthenium (Ru/NiMgAl) catalysts were synthesized and tested for the CO 2 methanation reaction.…”

mentioning

confidence: 99%

CO2 Methanation over Hydrotalcite-Derived Nickel/Ruthenium and Supported Ruthenium Catalysts

et al. 2019

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In this work, in-house synthesized NiMgAl, Ru/NiMgAl, and Ru/SiO 2 catalysts and a commercial ruthenium-containing material (Ru/Al 2 O 3 com. ) were tested for CO 2 methanation at 250, 300, and 350 • C (weight hourly space velocity, WHSV, of 2400 mL N,CO2 ·g −1 ·h −1 ). Materials were compared in terms of CO 2 conversion and CH 4 selectivity. Still, their performances were assessed in a short stability test (24 h) performed at 350 • C. All catalysts were characterized by temperature programmed reduction (TPR), X-ray diffraction (XRD), N 2 physisorption at −196 • C, inductively coupled plasma optical emission spectrometry (ICP-OES), and H 2 /CO chemisorption. The catalysts with the best performance (i.e., the hydrotalcite-derived NiMgAl and Ru/NiMgAl) seem to be quite promising, even when compared with other methanation catalysts reported in the literature.Extended stability experiments (240 h of time-on-stream) were performed only over NiMgAl, which was selected based on catalytic performance and estimated price criteria. This catalyst showed some deactivation under conditions that favor CO formation (high temperature and high WHSV, i.e., 350 • C and 24,000 mL N,CO2 ·g −1 ·h −1 , respectively), but at 300 • C and low WHSV, excellent activity (ca. 90% of CO 2 conversion) and stability, with nearly complete selectivity towards methane, were obtained. This is particularly relevant whenever the destination of methane is the injection into gas grid infrastructures, where the content of species like CO should be in accordance with natural gas specifications (typically a content up to 0.5 mol % can be tolerated (e.g., [8])). Hence, highly active and methane-selective catalysts for CO 2 methanation are required. In addition, catalyst stability under dynamic operation, i.e., with the capacity to withstand temperature variations, is also quite important and particularly relevant for application in PtM processes, where the reactor is operated intermittently and whenever surplus renewable power for H 2 production is available [6].Many metals have been tested for CO 2 methanation, for instance, Ni, Ru, Rh, Pd, and Co. Among these, ruthenium and nickel catalysts supported over various materials (e.g., Al 2 O 3 , SiO 2 , TiO 2 , CeO 2 , or ZrO 2 ) stand out [9,10]. Ruthenium-based catalysts have been reported in the literature, as well as in the catalogs of some catalyst suppliers (e.g., [11,12]), to be more suited for operation at low temperatures (T<200 • C), where CO formation is inhibited due to both restricted kinetics and the endothermic nature of the parallel RWGS reaction. On the other hand, nickel-based are the most widely investigated and commercialized catalysts for CO 2 methanation due to their high activity, availability, and low cost [4]. Improvement in their catalytic performance has been reported with hydrotalcite-derived Ni catalysts [13][14][15], as well as when combining nickel with ruthenium in the same bimetallic catalyst [16]. The use of hydrotalcite-derived Ni materials has also another important feature,...

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CO 2 utilization with a novel dual function material (DFM) for capture and catalytic conversion to synthetic natural gas: An update

Cited by 195 publications

References 41 publications

The Role of Ruthenium in CO2 Capture and Catalytic Conversion to Fuel by Dual Function Materials (DFM)

The Role of Ruthenium in CO2 Capture and Catalytic Conversion to Fuel by Dual Function Materials (DFM)

Carbon Capture and Utilization Update

CO2 Methanation over Hydrotalcite-Derived Nickel/Ruthenium and Supported Ruthenium Catalysts

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