Carbon-resistant NiO-Y2O3-nanostructured catalysts derived from double-layered hydroxides for dry reforming of methane

Świrk, Katarzyna; Zhang, Hailong; Li, Shanshan; Chen, Yaoqiang; Rønning, Magnus; Motak, Monika; Grzybek, Teresa; Costa, Patrick Da

doi:10.1016/j.cattod.2020.03.032

Cited by 31 publications

(13 citation statements)

References 56 publications

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“…An observable weight increase occurred at temperatures from approximately 200 • C to 400 • C for all the used catalysts due to the oxidation of Ni to NiO [50], while the weight loss starting from 400 • C was assigned to the gasification of the coke deposited after the CDR reaction. As shown in Figure 6, a slight weight loss about ~1.4-1.7% was obtained for the used Ni-C/Q-10 and Ni-G/Q-10 after 20 h CDR testing, and it was significantly lower than that of the used Ni/Q-10 (3.1%), which is significantly lower than the weight loss of the reference reports [51,52]. These results showed that the coke deposition was significantly reduced by adding complexing agent, which was attributed to its smaller Ni particle sizes (Figure 2 and Table 1) leading to a high stability of CDR (Figure 4).…”

Section: Characterization Of Used Catalystsmentioning

confidence: 83%

Carbon Dioxide Reforming of Methane over Ni Supported SiO2: Influence of the Preparation Method on the Resulting Structural Properties and Catalytic Activity

et al. 2020

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Ni-C/SiO2 and Ni-G/SiO2 catalysts were prepared by a complexed-impregnation method using citric acid and glycine as complexing agents, respectively. Ni/SiO2 was also prepared by the conventional incipient impregnation method. All the catalysts were comparatively tested for carbon dioxide reforming of methane (CDR) at P = 1.0 atm, T = 750 °C, CO2/CH4 = 1.0, and GHSV = 60,000 mL·g−1·h−1. The results showed that Ni-C/SiO2 and Ni-G/SiO2 exhibited better CDR performance, especially regarding stability, than Ni/SiO2. The conversions of CH4 and CO2 were kept constant above 82% and 87% after 20 h of reaction over Ni-C/SiO2 and Ni-G/SiO2 while they were decreased from 81% and 88% to 56% and 59%, respectively, over the Ni/SiO2. The characterization results of the catalysts before and after the reaction showed that the particle size and the distribution of Ni, as well as the interactions between Ni and the support were significantly influenced by the preparation method. As a result, an excellent resistance to the coking deposition and the anti-sintering of Ni was obtained over the Ni-C/SiO2 and Ni-G/SiO2, leading to a highly active and stable CDR performance.

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Section: Characterization Of Used Catalystsmentioning

confidence: 83%

Carbon Dioxide Reforming of Methane over Ni Supported SiO2: Influence of the Preparation Method on the Resulting Structural Properties and Catalytic Activity

et al. 2020

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“…The peaks at 1350 cm −1 (D band) and 1600 cm −1 (G band) represent two different kinds of carbon. And D band is mostly sp 3 hybrid carbon, belonging to the disordered aromatic structure, while G band is mostly sp 2 hybrid carbon, belonging to stretching vibrations in the aromatic layers of graphite [40] . The carbon deposition type on the catalyst surface was evaluated by I D / I G values, and I D and I G values corresponded to Raman peak intensity of D‐band and G‐band, respectively [41] .…”

Section: Resultsmentioning

confidence: 99%

“…And D band is mostly sp 3 hybrid carbon, belonging to the disordered aromatic structure, while G band is mostly sp 2 hybrid carbon, belonging to stretching vibrations in the aromatic layers of graphite. [40] The carbon deposition type on the catalyst surface was evaluated by I D / I G values, and I D and I G values corresponded to Raman peak intensity of D-band and Gband, respectively. [41] The value of the I D / I G increase in the order of: Ni/MgO < Ni/MgO@Al0.6 < Ni@Al 2 O 3 .…”

Section: Analysis Of Catalysts Deactivationmentioning

confidence: 99%

Dry Reforming of Methane over Ni/MgO@Al Catalysts with Unique Features of Sandwich Structure

et al. 2021

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Dry reforming of methane (DRM) reaction can eliminate CH4 and CO2, the two main greenhouse gases. However, the industrialization of Ni‐based catalysts has been restricted by the problems of sintering and carbon deposition in common use. In this work, a series of sandwich structure catalyst Ni/MgO@Alx with traditional Ni/MgO and core‐shell Ni@Al2O3 were characterized and analyzed. Extensive catalyst characterization using N2 adsoptron‐desorption isotherms, X‐ray diffraction (XRD), transmission electron microscope (TEM), temperature‐programmed reduction/ desorption (TPR/D), Raman and thermogravimetric analysis (TGA) indicates that the sandwich structure catalyst has high activity, and the suitable shell thickness directly determines the mass transfer and surface acidity and basicity of the catalyst. However, in the process of reaction, the carbon tube grows on the top of the active component, resulting in its stability is not as good as Ni@Al2O3. Under the conditions of high gas velocity of 18000 mL gcat−1 h−1 with a reaction gas ratio of CO2 : CH4=1 : 1, after 30 hours of reaction with Ni/MgO@Al0.6 catalyst at 750 °C, the conversion of CH4 and CO2 remained at 79 % and 83 %, respectively.

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“…In order to improve the catalytic performance, various catalytic additives, such as alkaline earth metal oxides, and rare-earth metal oxides, have been extensively investigated toward CRM reaction (Swirk et al, 2020). Meanwhile, doping promoters can also improve the stability of the catalyst by enhancing the surface basicity, redox property, and pore structure of the catalyst by intensifying the coke eliminating process (Singha et al, 2016).…”

Section: Ni-based Catalyst Modified With Different Additivesmentioning

confidence: 99%

Recent Progresses in the Design and Fabrication of Highly Efficient Ni-Based Catalysts With Advanced Catalytic Activity and Enhanced Anti-coke Performance Toward CO2 Reforming of Methane

Chen

et al. 2020

Front. Chem.

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CO 2 reforming of methane (CRM) can effectively convert two greenhouse gases (CO 2 and CH 4) into syngas (CO + H 2). This process can achieve the efficient resource utilization of CO 2 and CH 4 and reduce greenhouse gases. Therefore, CRM has been considered as a significantly promising route to solve environmental problems caused by greenhouse effect. Ni-based catalysts have been widely investigated in CRM reactions due to their various advantages, such as high catalytic activity, low price, and abundant reserves. However, Ni-based catalysts usually suffer from rapid deactivation because of thermal sintering of metallic Ni active sites and surface coke deposition, which restricted the industrialization of Ni-based catalysts toward the CRM process. In order to address these challenges, scientists all around the world have devoted great efforts to investigating various influencing factors, such as the option of appropriate supports and promoters and the construction of strong metal-support interaction. Therefore, we carefully summarized recent development in the design and preparation of Ni-based catalysts with advanced catalytic activity and enhanced anti-coke performance toward CRM reactions in this review. Specifically, recent progresses of Ni-based catalysts with different supports, additives, preparation methods, and so on, have been summarized in detail. Furthermore, recent development of reaction mechanism studies over Ni-based catalysts was also covered by this review. Finally, it is prospected that the Ni-based catalyst supported by an ordered mesoporous framework and the combined reforming of methane will become the future development trend.

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Carbon-resistant NiO-Y2O3-nanostructured catalysts derived from double-layered hydroxides for dry reforming of methane

Cited by 31 publications

References 56 publications

Carbon Dioxide Reforming of Methane over Ni Supported SiO2: Influence of the Preparation Method on the Resulting Structural Properties and Catalytic Activity

Carbon Dioxide Reforming of Methane over Ni Supported SiO2: Influence of the Preparation Method on the Resulting Structural Properties and Catalytic Activity

Dry Reforming of Methane over Ni/MgO@Al Catalysts with Unique Features of Sandwich Structure

Recent Progresses in the Design and Fabrication of Highly Efficient Ni-Based Catalysts With Advanced Catalytic Activity and Enhanced Anti-coke Performance Toward CO2 Reforming of Methane

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