Perovskite-Type Oxides as the Catalyst Precursors for Preparing Supported Metallic Nanocatalysts: A Review

Yang, Qilei; Liu, Guilong; Liu, Yuan

doi:10.1021/acs.iecr.7b03251

Cited by 133 publications

(72 citation statements)

References 121 publications

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“…To address the aforementioned problem, a particularly attractive way is the utilization of perovskite type oxides (PTOs) as precursors, which have high thermal stabilities and relative low costs . In particular, perovskites have been used as heterogeneous catalysts for many high‐temperature reactions, such as CO 2 reforming of methane and steam reforming of ethanol .…”

Section: Introductionmentioning

confidence: 99%

Perovskite LaNiO₃ Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO₂ Methanation

Zhang

Liu

2020

Energy Tech

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To simultaneously obtain high catalytic activity and stability, LaNiO3‐based catalysts supported on mesostructured cellular foam (MCF) silica are prepared by a citric acid–assisted impregnation method and applied for a CO2 methanation reaction. These MCF‐supported perovskite LaNiO3 (LaNiO3/MCF) samples are characterized by nitrogen adsorption, X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, H2‐temperature‐programmed reduction, and X‐ray photoelectron spectroscopy. The results indicate that these catalysts offer highly dispersed La2O3 and metallic Ni nanoparticles with intimate contact inside the pores of MCF support after reduction in H2 flow. Compared with the catalyst prepared by the coimpregnation method (30LNOM‐Im‐650), the citric acid–assisted LaNiO3/MCF (30LNOM‐C‐650) catalyst exhibits a much higher catalytic activity due to its higher Ni dispersion and stronger interrelationship between La2O3 and Ni species. In the 100 h‐lifetime test under the conditions of 450 °C, 0.1 MPa, and a high weight hourly space velocity of 60 000 mL g−1 h−1, 30LNOM‐C‐650 also shows a high long‐term stability without Ni sintering, which is attributed to the formation of enhanced interaction between metallic Ni and La2O3 via La2O2CO3 species on their interface as well as the confinement effect of the MCF support.

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Section: Introductionmentioning

confidence: 99%

Perovskite LaNiO₃ Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO₂ Methanation

Zhang

Liu

2020

Energy Tech

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“…25 Nevertheless, nickel-catalysts are susceptible to deactivation by sintering and carbon deposition. 30 Recently, Yang et al 31 in their extensive review reiterate the importance of using perovskite-type oxides as precursors for preparing supported metal catalyst. 29 Till now, supports such as Al 2 O 3 , CeO 2 , La 2 O 3 , ZrO 2 , SiO 2 , SBA-15, and perovskite LaFeO 3 have been used for the synthesis of Ni catalysts employed for SMR.…”

Section: Introductionmentioning

confidence: 99%

“…28,29 These supports were reported to have a varying degree of influence on the stability and the activities of the nickel catalysts during SMR reaction. 30 Recently, Yang et al 31 in their extensive review reiterate the importance of using perovskite-type oxides as precursors for preparing supported metal catalyst. Lian et al 30 employed perovskite LaFeO 3 as support for Ni catalyst used in SMR to H 2 .…”

Section: Introductionmentioning

confidence: 99%

Experimental and optimization studies of hydrogen production by steam methane reforming over lanthanum strontium cobalt ferrite supported Ni catalyst

et al. 2019

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Summary Over the years, research focused has been on the development of active and stable catalysts for hydrogen (H2) production by steam methane reforming (SMR). However, there is less attention on the individual and interaction effect of key process parameters that influence the catalytic performance of such catalysts and how to optimize them. The main objective of this study is to investigate the individual and interaction effects of key parameters such as methane partial pressure ( PCH4true) (10‐30 kPa), steam partial pressure ( PH2normalO()gtrue) (10‐30 kPa), and reaction temperature (T) (750‐850°C) on H2 yield and methane (CH4) conversion during SMR using Box‐Behnken experimental design (BBD) and response surface methodology. The H2 production was catalyzed using Ni/LSCF prepared by wet impregnation method. The evaluation of the Ni/LSCF using different instrument techniques revealed that the catalyst exhibited excellent physicochemical properties suitable for SMR. Response surface models showing the individual and interaction effect of each of the parameters on the H2 yield and CH4 conversion were obtained using the set of data obtained from the BBD matrix. The three parameters were found to have significant effects on the H2 yield and CH4 conversion. At the highest desirability of 0.8994, maximum H2 yield and CH4 conversion of 89.77% and 89.01%, respectively, were obtained at optimum conditions of 30 kPa, 28.86 kPa, and 850°C for PCH4, PH2normalO()g, and temperature, respectively. The predicted values of the responses from the response surface models were found to be in good agreement with the experimental values. At optimum conditions, the catalyst was found to be stable up to 390 minutes with time on stream. The characterization of the used catalyst using thermogravimetric analysis, scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, and transmission electron microscopy showed some evidence deposition of a small amount of carbon on the catalyst surface.

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“…Noble metal catalysts such as Ru and Rh supported on various porous materials are highly active for methanation reactions, but their industrial applications have some limitations due to low reserves and high costs . Comparing with noble metal catalysts, Ni‐based catalysts have been widely used, and various materials such as Al 2 O 3 , CeO 2 , SBA‐15, zeolite, SiO 2 , and La 2 O 3 have been utilized as the support for the methanation reaction. Among them, Ni/Al 2 O 3 is a well‐known catalyst in both industry and academia; however, there are still some shortcomings such as easy sintering of metallic Ni, carbon deposition, and poor stability …”

Section: Introductionmentioning

confidence: 99%

La₂O₃‐Promoted Ni/Al₂O₃ Catalyst for CO Methanation: Enhanced Catalytic Activity and Stability

Zhang

Liu

2019

Energy Tech

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To simultaneously inhibit Ni sintering and coke formation, while maintaining high catalytic activity, Ni–La2O3/Al2O3 catalysts are prepared by a modified deposition–precipitation (DP) method and applied for the CO methanation reaction. The activity of the catalyst prepared by the DP method is much higher than those prepared by the traditional impregnation and co‐impregnation methods due to the promotion of La2O3 as well as its unique dispersion on the surface of the catalyst. In the 100 h‐lifetime test under the conditions of 450 °C, 0.1 MPa, a weight hourly space velocity (WHSV) of 120 000 mL g−1 h−1, the Ni–La2O3/Al2O3 catalyst prepared by the DP method shows high catalytic stability. The characterization results show that La2O3 species can be deposited on the surface of the catalyst during the preparation process and can act as a physical barrier to prevent sintering of Ni particles and coke formation during high‐temperature reduction and reaction. La2O3 species can improve the reducibility of Ni particles and decrease the Ni particle sizes, resulting in larger H2 uptake and higher catalytic activity. Furthermore, the La3+/La2+ redox can also decrease coke formation by increasing the active oxygen species on the Ni surface.

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Perovskite-Type Oxides as the Catalyst Precursors for Preparing Supported Metallic Nanocatalysts: A Review

Cited by 133 publications

References 121 publications

Perovskite LaNiO₃ Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO₂ Methanation

Perovskite LaNiO₃ Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO₂ Methanation

Experimental and optimization studies of hydrogen production by steam methane reforming over lanthanum strontium cobalt ferrite supported Ni catalyst

La₂O₃‐Promoted Ni/Al₂O₃ Catalyst for CO Methanation: Enhanced Catalytic Activity and Stability

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Perovskite-Type Oxides as the Catalyst Precursors for Preparing Supported Metallic Nanocatalysts: A Review

Cited by 133 publications

References 121 publications

Perovskite LaNiO3 Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO2 Methanation

Perovskite LaNiO3 Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO2 Methanation

Experimental and optimization studies of hydrogen production by steam methane reforming over lanthanum strontium cobalt ferrite supported Ni catalyst

La2O3‐Promoted Ni/Al2O3 Catalyst for CO Methanation: Enhanced Catalytic Activity and Stability

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Product

Resources

About

Perovskite LaNiO₃ Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO₂ Methanation

Perovskite LaNiO₃ Nanocrystals inside Mesostructured Cellular Foam Silica: High Catalytic Activity and Stability for CO₂ Methanation

La₂O₃‐Promoted Ni/Al₂O₃ Catalyst for CO Methanation: Enhanced Catalytic Activity and Stability