1
|
Zou X, Meng Y, Liu J, Cao Y, Cui L, Shen Z, Xia Q, Li X, Zhang S, Ge Z, Pan Y, Wang Y. Niobium Modification of CeO 2 Tuning Electron Density of Nickel-Ceria Interfacial Sites for Enhanced CO 2 Methanation. Inorg Chem 2024; 63:881-890. [PMID: 38130105 DOI: 10.1021/acs.inorgchem.3c03881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
CO2 methanation has attracted considerable attention as a promising strategy for recycling CO2 and generating valuable methane. This study presents a niobium-doped CeO2-supported Ni catalyst (Ni/NbCe), which demonstrates remarkable performance in terms of CO2 conversion and CH4 selectivity, even when operating at a low temperature of 250 °C. Structural analysis reveals the incorporation of Nb species into the CeO2 lattice, resulting in the formation of a Nb-Ce-O solid solution. Compared with the Ni/CeO2 catalyst, this solid solution demonstrates an improved spatial distribution. To comprehend the impact of the Nb-Ce-O solid solution on refining the electronic properties of the Ni-Ce interfacial sites, facilitating H2 activation, and accelerating the hydrogenation of CO2* into HCOO*, in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analysis and density functional theory (DFT) calculations were conducted. These investigations shed light on the mechanism through which the activity of CO2 methanation is enhanced, which differs from the commonly observed CO* pathway triggered by oxygen vacancies (OV). Consequently, this study provides a comprehensive understanding of the intricate interplay between the electronic properties of the catalyst's active sites and the reaction pathway in CO2 methanation over Ni-based catalysts.
Collapse
Affiliation(s)
- Xuhui Zou
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
- Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yuxiao Meng
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Jianqiao Liu
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
- Department of Environmental Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yongyong Cao
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Lifeng Cui
- College of Smart Energy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhangfeng Shen
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Qineng Xia
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Xi Li
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Siqian Zhang
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Zhigang Ge
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Yunxiang Pan
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yangang Wang
- College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing 314001, China
| |
Collapse
|
2
|
Salimi S, F Farnia SM, Akhbari K, Tavasoli A. Engineered Catalyst Based on MIL-68(Al) with High Stability for Hydrogenation of Carbon Dioxide and Carbon Monoxide at Low Temperature. Inorg Chem 2023; 62:17588-17601. [PMID: 37856844 DOI: 10.1021/acs.inorgchem.3c01094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Today, the importance of decreasing and converting COx gases from the atmosphere into value-added chemicals by catalytic hydrogenation reactions has become one crucial challenge. In the current work, to facilitate the hydrogenation of COx, several mesoporous alumina catalysts with high efficiency and stability were synthesized using the MIL-68(Al) platform, a nanoporous MOF with a high surface area as a precatalyst, encapsulating nickel or nickel-iron nanoparticles (NPs). After removing the organic linker of MIL-68(Al) by calcination in air, two types of catalysts, promoted and unpromoted, were obtained with various loads of nickel and iron. A set of analyses (PXRD, BET-N2, TEM, FE-SEM, ICP-OES, EDX-map, CO2-TPD, H2-TPR, and H2-TPD) were performed to evaluate the physicochemical properties of catalysts. Based on the analysis results, the promoted catalyst had smaller particles and pores due to the effective and uniform distribution of nickel NPs. Also, H2-TPR and CO2-TPD results in samples containing Fe promoter demonstrated the facilitation of the reduction process and the adsorption and activation of CO2, respectively. The results of CO2 methanation indicated an improved catalytic performance for promoted samples, especially at low temperatures (200-300 °C), compared to unpromoted catalysts. 5Fe·15Ni@Al2O3 MIL-68(Al) catalyst displayed the best performance compared to other catalysts, with a conversion of 92.4% and selectivity of 99.6% at 350 °C and GHSV = 2500 h-1. Moreover, the 5Fe·15Ni@Al2O3 MIL-68(Al) catalyst facilitated the CO2 methanation reaction by reducing the activation energy to 42.5 kJ mol-1 compared with other reported catalysts. Both types of catalysts performed 100% hydrogenation of CO to CH4 with full selectivity at 250 °C and exhibited high stability for at least 100 h at 300 °C. Notably, such high significant catalytic performance is only achieved by the usage of the "MOFs templating strategy" due to the high surface area for the effective distribution of NPs, the strong metal-support interaction, and the formation of nickel aluminate species, preventing the sintering of NPs.
Collapse
Affiliation(s)
- Saeideh Salimi
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455 Tehran, Iran
| | - S Morteza F Farnia
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455 Tehran, Iran
| | - Kamran Akhbari
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455 Tehran, Iran
| | - Ahmad Tavasoli
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455 Tehran, Iran
| |
Collapse
|
3
|
Refaat Z, Saied ME, Naga AOAE, Shaban SA, Hassan HB, Shehata MR, Kady FYE. Efficient CO 2 methanation using nickel nanoparticles supported mesoporous carbon nitride catalysts. Sci Rep 2023; 13:4855. [PMID: 36964285 PMCID: PMC10039036 DOI: 10.1038/s41598-023-31958-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 03/20/2023] [Indexed: 03/26/2023] Open
Abstract
The CO2 methanation technique not only gives a solution for mitigating CO2 emissions but can also be used to store and convey low-grade energy. The basic character and large surface area of mesoporous carbon nitride, (MCN), are considered promising properties for the methanation of CO2. So, a series (5-20 wt.%) of Ni-doped mesoporous carbon nitride catalysts were synthesized by using the impregnation method for CO2 methanation. the prepared catalysts were characterized by several physicochemical techniques including XRD, BET, FT-IR, Raman spectroscopy, TEM, TGA analysis, Atomic Absorption, H2-TPR, and CO2-TPD. The catalytic performance was investigated at ambient pressure and temperature range (200-500 °C) using online Gas chromatography system. The prepared catalysts showed good performance where 15%Ni/MCN exhibited the best catalytic conversion and methane yield with 100% methane selectivity at 450 °C for investigated reaction conditions.
Collapse
Affiliation(s)
- Zakaria Refaat
- Catalysis Department, Refining Division, Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, Egypt
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Mohamed El Saied
- Catalysis Department, Refining Division, Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, Egypt.
| | - Ahmed O Abo El Naga
- Catalysis Department, Refining Division, Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, Egypt
| | - Seham A Shaban
- Catalysis Department, Refining Division, Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, Egypt
| | - H B Hassan
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | | | - F Y El Kady
- Catalysis Department, Refining Division, Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, Egypt
| |
Collapse
|
4
|
Wang F, Wang G, Deng P, Chen Y, Li J, Wu D, Wang Z, Wang C, Hua Y, Tian X. Ultrathin Nitrogen-Doped Carbon Encapsulated Ni Nanoparticles for Highly Efficient Electrochemical CO 2 Reduction and Aqueous Zn-CO 2 Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2301128. [PMID: 36919799 DOI: 10.1002/smll.202301128] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Electrochemical CO2 reduction reaction (CO2 RR), powered by renewable electricity, has attracted great attention for producing high value-added fuels and chemicals, as well as feasibly mitigating CO2 emission problem. Here, this work reports a facile hard template strategy to prepare the Ni@N-C catalyst with core-shell structure, where nickel nanoparticles (Ni NPs) are encapsulated by thin nitrogen-doped carbon shells (N-C shells). The Ni@N-C catalyst has demonstrated a promising industrial current density of 236.7 mA cm-2 with the superb FECO of 97% at -1.1 V versus RHE. Moreover, Ni@N-C can drive the reversible Zn-CO2 battery with the largest power density of 1.64 mW cm-2 , and endure a tough cycling durability. These excellent performances are ascribed to the synergistic effect of Ni@N-C that Ni NPs can regulate the electronic microenvironment of N-doped carbon shells, which favor to enhance the CO2 adsorption capacity and the electron transfer capacity. Density functional theory calculations prove that the binding configuration of N-C located on the top of Ni slabs (Top-Ni@N-C) is the most thermodynamically stable and possess a lowest thermodynamic barrier for the formation of COOH* and the desorption of CO. This work may pioneer a new method on seeking high-efficiency and worthwhile electrocatalysts for CO2 RR and Zn-CO2 battery.
Collapse
Affiliation(s)
- Fangyuan Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Guan Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Peilin Deng
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Yao Chen
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Jing Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Daoxiong Wu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Zhitong Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| | - Chongtai Wang
- Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Provinc, School of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, P. R. China
| | - Yingjie Hua
- Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Provinc, School of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, P. R. China
| | - Xinlong Tian
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, P. R. China
| |
Collapse
|
5
|
Song M, Shi L, Xu X, Du X, Chen Y, Zhuang W, Tao X, Sun L, Xu Y. Ni/M/SiO2 catalyst (M=La, Ce or Mg) for CO2 methanation: Importance of the Ni active sites. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
6
|
Du Y, Qin C, Xu Y, Tian S, Bai J, Ding M. Deep Understanding into the Effect of Fe on CO 2 Methanation: A Support-Dependent Phenomenon. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03502] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yixiong Du
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
| | - Chuan Qin
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
| | - Yanfei Xu
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
| | - Shuhang Tian
- School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jingyang Bai
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
| | - Mingyue Ding
- School of Power and Mechanical Engineering, The Institute of Technological Sciences, Hubei Province Key Laboratory of Accoutrement Technique in Fluid Machinery & Power Engineering, Wuhan University, Wuhan, 430072, China
- Shenzhen Research Institute of Wuhan University, Shenzhen, 518108, China
| |
Collapse
|
7
|
Preparation of Novel Mesoporous LaFeO3-SBA-15-CTA Support for Syngas Formation of Dry Reforming. NANOMATERIALS 2022; 12:nano12091451. [PMID: 35564159 PMCID: PMC9105762 DOI: 10.3390/nano12091451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/14/2022] [Accepted: 04/22/2022] [Indexed: 02/01/2023]
Abstract
A nanocomposite NiPt/5LSBA-160 catalyst comprised of highly dispersed Ni nanoparticles contacting intimately with Pt over novel mesoporous LaFeO3-SBA-15-CTA support with a high specific surface area (SSA) was successfully developed for the dry reforming of methane. Results revealed that the high SSA mesoporous LaFeO3-SBA-15-CTA materials could first be synthesized by an in situ growth hydrothermal process and used as an excellent carrier candidate of Ni-based catalysts to achieve enhanced catalytic activity due to the strong interaction between LaFeO3 and Ni species. Moreover, the introduction of Pt over a Ni/5LSBA-160 catalyst would further promote the interaction between Ni and support, improve the dispersion of active Ni centers and obtain a higher syngas formation rate as well as tolerance to carbon coking than that of a Pt-free Ni/5LSBA-160 catalyst sample. This finding uncovers a promising prospect for high SSA mesoporous perovskite preparation and utilization in catalysis such as oxidation, hydrogenation, photocatalysis, energy conversion and so on.
Collapse
|
8
|
Yu X, Williams CT. Recent Advances in the Applications of Mesoporous Silica in Heterogenous Catalysis. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00001f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesoporous silica is a class of silica material with a large specific surface area, high specific pore volume and meso-sized pores. These properties make mesoporous silica a good choice of...
Collapse
|
9
|
|
10
|
Li L, Liu D, Guo Z, Xi S, Chu W, Liu Y. Insights into Ni and (Ce)SBA-15-CTA interaction and syngas formation rate. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111850] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
11
|
Xia D, Mannering J, Li Q, Massey AF, Kulak AN, Li H, Menzel R, Huang P. Facile Synthesis of Electrically Conductive and Heatable Nanoparticle/Nanocarbon Hybrid Aerogels. ACS APPLIED MATERIALS & INTERFACES 2021; 13:36201-36212. [PMID: 34291894 DOI: 10.1021/acsami.1c10428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Joule heating studies on nanoparticle/nanocarbon hybrid aerogels have been reported, but systematic investigations on hydrotalcite-derived catalysts supported onto reduced graphene oxide (rGO) aerogels are rare. In this study, hydrotalcite-derived Cu-Al2O3 nanoparticles were incorporated into a porous and multifunctional rGO aerogel support for fabricating electrically conducting Cu-Al2O3/rGO hybrid aerogels, and their properties were investigated in detail. The hybridization of Cu-Al2O3 with a 3D nanocarbon support network imparts additional functionalities to the widely used functional inorganic nanoparticles, such as direct electrical framework heating and easy regeneration and separation of spent nanoparticles, with well-spaced nanoparticle segregation. 3D variable-range hopping model fitting confirmed that electrons were able to reach the entire aerogel to enable uniform resistive heating. The conductivity of the nanocarbon support framework facilitates uniform and fast heating (up to 636 K/min) of the embedded nanoparticles at very low energy consumption, while the large porosity and high thermal conductivity enable efficient heat dissipation during natural cooling (up to 336 K/min). The thermal stability of the hybrid aerogel was demonstrated by repeated heating/cooling cycling at different temperatures that were relevant to important industrial applications. The facile synthetic approach can be easily adapted to fabricate other types of multifunctional nanoparticle/nanocarbon hybrid aerogels, such as the MgAl-MMO/rGO aerogel and the Ni-Al2O3/rGO aerogel. These findings open up new routes to the functionalization of inorganic nanoparticles and extend their application ranges that involve electrical/thermal heating, temperature-dependent catalysis, sorption, and sensing.
Collapse
Affiliation(s)
- Dong Xia
- School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K
| | - Jamie Mannering
- School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K
| | - Qun Li
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | | | | | - Heng Li
- Key Laboratory of Estuarine Ecological Security and Environmental Health, Tan Kah Kee College, Xiamen University, 363105 Zhangzhou, China
| | - Robert Menzel
- School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K
| | - Peng Huang
- Department of Materials, University of Manchester, Manchester M13 9PL, U.K
| |
Collapse
|
12
|
Hashimoto N, Mori K, Asahara K, Shibata S, Jida H, Kuwahara Y, Yamashita H. How the Morphology of NiO x-Decorated CeO 2 Nanostructures Affects Catalytic Properties in CO 2 Methanation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:5376-5384. [PMID: 33881888 DOI: 10.1021/acs.langmuir.1c00546] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Effects of morphology and exposed crystal planes of NiOx-decorated CeO2 (NiCeO2) nanostructured catalysts on activity during CO2 methanation were examined, using nanorod (NR), nanocube (NC), and nanooctahedron (NO) structures. The NiCeO2 nanorods (NiCeO2-NR) showed superior activity to NiCeO2-NC and NiCeO2-NO along with excellent selectivity for CH4. This material also demonstrated exceptional durability, with no significant loss of catalytic activity or structural change after use. Comprehensive physicochemical characterization as well as density functional theory calculations determined that the high performance of the NiCeO2-NR was closely related to the large quantity of surface oxygen vacancies and the high degree of reversibility associated with the Ce4+ ↔ Ce3+ redox cycle of the support. These effects originate from the enhanced reactivity of oxygen atoms on the (110) surfaces of the oxide compared with the (100) and (111) surfaces. This information is expected to assist in the rational design of practical catalysts for the activation of CO2 molecules and other important transformations.
Collapse
Affiliation(s)
- Naoki Hashimoto
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
| | - Kohei Asahara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Shun Shibata
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hirotaka Jida
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
- JST, PRESTO, Kawaguchi, Saitama 332-0012, Japan
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
| |
Collapse
|
13
|
CO2 Methanation Using Multimodal Ni/SiO2 Catalysts: Effect of Support Modification by MgO, CeO2, and La2O3. Catalysts 2021. [DOI: 10.3390/catal11040443] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Ni/oxide-SiO2 (oxide: MgO, CeO2, La2O3, 10 wt.% target concentration) catalyst samples were prepared by successive impregnation of silica matrix, first with supplementary oxide, and then with Ni (10 wt.% target concentration). The silica matrix with multimodal pore structure was prepared by solvothermal method. The catalyst samples were structurally characterized by N2 adsorption-desorption, XRD, SEM/TEM, and functionally evaluated by temperature programmed reduction (TPR), and temperature programmed desorption of hydrogen (H2-TPD), or carbon dioxide (CO2-TPD). The addition of MgO and La2O3 leads to a better dispersion of Ni on the catalytic surface. Ni/LaSi and Ni/CeSi present a higher proportion of moderate strength basic sites for CO2 activation compared to Ni/Si, while Ni/MgSi lower. CO2 methanation was performed in the temperature range of 150–350 °C and at atmospheric pressure, all silica supported Ni catalysts showing good CO2 conversion and CH4 selectivity. The best catalytic activity was obtained for Ni/LaSi: CO2 conversion of 83% and methane selectivity of 98%, at temperatures as low as 250 °C. The used catalysts preserved the multimodal pore structure with approximately the same pore size for the low and medium mesopores. Except for Ni/CeSi, no particle sintering occurs, and no carbon deposition was observed for any of the tested catalysts.
Collapse
|
14
|
Zhang J, Ren B, Fan G, Yang L, Li F. Exceptional low-temperature activity of a perovskite-type AlCeO 3 solid solution-supported Ni-based nanocatalyst towards CO 2 methanation. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00340b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A perovskite-type AlCeO3 solid solution-supported Ni-based nanocatalyst exhibited remarkable low-temperature catalytic activity towards CO2 methanation at 200 °C.
Collapse
Affiliation(s)
- Jingyi Zhang
- State Key Laboratory of Chemical Resources Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Baojin Ren
- State Key Laboratory of Chemical Resources Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Guoli Fan
- State Key Laboratory of Chemical Resources Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Lan Yang
- State Key Laboratory of Chemical Resources Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Feng Li
- State Key Laboratory of Chemical Resources Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| |
Collapse
|