A review on dry reforming of methane over perovskite derived catalysts

Bhattar, Srikar; Abedin, Ashraful; Kanitkar, Swarom; Spivey, James J.

doi:10.1016/j.cattod.2020.10.041

Cited by 131 publications

(101 citation statements)

References 195 publications

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“…77% after about 25 hours. This behavior can be attributed to the progressive reduction of the as-prepared LaNiO 3 perovskite ( Figure 1 A) to the catalytically active Ni 0 and La 2 O 2 CO 3 species ( Figure 6 A), in agreement with the results of previous studies [ 31 , 33 , 63 ]. Selectivities to reaction products also varied during the first few hours-on-stream and then remained practically stable.…”

Section: Resultssupporting

confidence: 91%

“…The physicochemical and catalytic properties of perovskite-derived catalysts can be greatly influenced by the partial substitution of the A-and/or B-sites by other metal cations, which results in the formation of solids described by the formula A 1−x A x B 1−y B y O 3 [31,34]. As a general trend, A-site substitution enhances the oxygen mobility in the perovskite structure by generating oxygen vacancies, which suppress the carbon deposition, while B-site substitution tends to increase the activity and stability of the derived catalysts due to bimetallic synergy effects [3,33].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, perovskite-derived catalysts have attracted significant attention for the production of H 2 or syngas via reforming reactions [ 3 ] because of their high activity, carbon tolerance, thermal stability, and low cost [ 23 , 31 ]. Perovskites are a class of crystalline oxides described by the general formula ABO 3 , where the A-site (12-fold coordination) is generally occupied by an alkaline-earth or alkali metal cation with a larger size, and the B-site (6-fold coordination) is occupied by a transition metal ion with a smaller radius [ 3 , 32 , 33 ]. Generally, the A-sites provide the basicity and high thermal stability of the whole structure.…”

Section: Introductionmentioning

confidence: 99%

“…When perovskites are exposed to a reductive environment, the B-site cations migrate (exsolve) spontaneously from the bulk to the surface, forming highly dispersed metal nanoparticles. The exsolved metal particles, which are confined on the catalyst surface, exhibit superior reactivity and stability due to their enhanced resistance to coking and metal sintering [ 32 , 33 ]. Removal of the active metal from the host lattice results in the rearrangement of the nonreducible metals and the formation of oxygen vacancies [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

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Propane Steam Reforming over Catalysts Derived from Noble Metal (Ru, Rh)-Substituted LaNiO3 and La0.8Sr0.2NiO3 Perovskite Precursors

et al. 2021

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The propane steam reforming (PSR) reaction was investigated over catalysts derived from LaNiO3 (LN), La0.8Sr0.2NiO3 (LSN), and noble metal-substituted LNMx and LSNMx (M = Ru, Rh; x = 0.01, 0.1) perovskites. The incorporation of foreign cations in the A and/or B sites of the perovskite structure resulted in an increase in the specific surface area, a shift of XRD lines toward lower diffraction angles, and a decrease of the mean primary crystallite size of the parent material. Exposure of the as-prepared samples to reaction conditions resulted in the in situ development of new phases including metallic Ni and La2O2CO3, which participate actively in the PSR reaction. The LN-derived catalyst exhibited higher activity compared to LSN, and its performance for the title reaction did not change appreciably following partial substitution of Ru for Ni. In contrast, incorporation of Ru and, especially, Rh in the LSN perovskite matrix resulted in the development of catalysts with significantly enhanced catalytic performance, which improved by increasing the noble metal content. The best results were obtained for the LSNRh0.1-derived sample, which exhibited excellent long-term stability for 40 hours on stream as well as high propane conversion (XC3H8 = 92%) and H2 selectivity (SH2 = 97%) at 600 °C.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Propane Steam Reforming over Catalysts Derived from Noble Metal (Ru, Rh)-Substituted LaNiO3 and La0.8Sr0.2NiO3 Perovskite Precursors

et al. 2021

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“…However, perovskite-type catalysts generally have the disadvantage of small specific surface area. Supporting these catalysts with large specific surface area to obtain more dispersed active components is a research hotspot [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Supported Perovskite Catalyst to Purify Membrane Concentrate of Coal Chemical Wastewater in UV-Catalytic Wet Hydrogen Peroxide Oxidation System

Zhang

Liu

Chen

et al. 2021

IJERPH

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The effective treatment of membrane concentrate is a major technical challenge faced by the new coal chemical industry. In this study, a supported perovskite catalyst LaCoO3/X was prepared by a sol–impregnation two-step method. The feasibility of the supported perovskite catalyst LaCoO3/X in the UV-catalytic wet hydrogen peroxide oxidation (UV-CWPO) system for the purification of concentrated liquid of coal chemical wastewater was investigated. The effects of catalyst support, calcination temperature, calcination time, and re-use time on catalytic performance were investigated by batch experiments. The catalysts were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET), and X-ray photoelectron spectroscopy (XPS). Experimental results showed that the supported perovskite catalyst LaCoO3/CeO2 prepared using CeO2 as support, calcination temperature of 800 °C, and calcination time of 8 h had the best catalytic effect. The catalytic performance of the catalyst remained excellent after seven cycles. The best prepared catalyst was used in UV-CWPO of coal chemical wastewater membrane concentrate. The effects of H2O2 dosage, reaction temperature, reaction pressure, and catalyst dosage on UV-CWPO were determined. Under the conditions of H2O2 dosage of 40 mM, reaction temperature of 120 °C, reaction pressure of 0.5 MPa, catalyst dosage of 1 g/L, pH of 3, and reaction time of 60 min, the removal efficiencies of COD, TOC, and UV254 were 89.7%, 84.6%, and 98.1%, respectively. Under the optimal operating conditions, the oxidized effluent changed from high toxicity to non-toxicity, the BOD5/COD increased from 0.02 to 0.412, and the biodegradability of the oxidized effluent was greatly improved. The catalyst has a simple synthesis procedure, excellent catalytic performance, and great potential in the practical application of coal chemical wastewater treatment.

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Highly Efficient Solar‐Driven Dry Reforming of Methane on a Rh/LaNiO₃ Catalyst through a Light‐induced Metal‐To‐Metal Charge Transfer Process

Yao,

Li,

Gao

et al. 2023

Advanced Materials

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As an energy‐saving and green method, solar‐driven dry reforming of methane (DRM) is expected to introduce new activation processes and prevent sintering and coking of the catalysts. However, it still lacks an efficient way to coordinate the regulation of activation of reactants and lattice oxygen migration. In this study, Rh/LaNiO3 is designed as a highly efficient photothermal catalyst for solar‐driven DRM, which performs production rates of 452.3 mmol h−1 gRh−1 for H2 and 527.6 mmol h−1 gRh−1 for CO2 under a light intensity of 1.5 W cm−2, with an excellent stability. Moreover, a remarkable light‐to‐chemical energy efficiency (LTCEE) of 10.72% is achieved under a light intensity of 3.5 W cm−2. The characterizations of surface electronic and chemical properties and theoretical analysis demonstrate that strong adsorption for CH4 and CO2, light‐induced metal‐to‐metal charge transfer (MMCT) process and high oxygen mobility together bring Rh/LaNiO3 excellent performance for solar‐driven DRM.

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A review on dry reforming of methane over perovskite derived catalysts

Cited by 131 publications

References 195 publications

Propane Steam Reforming over Catalysts Derived from Noble Metal (Ru, Rh)-Substituted LaNiO3 and La0.8Sr0.2NiO3 Perovskite Precursors

Propane Steam Reforming over Catalysts Derived from Noble Metal (Ru, Rh)-Substituted LaNiO3 and La0.8Sr0.2NiO3 Perovskite Precursors

Preparation of Supported Perovskite Catalyst to Purify Membrane Concentrate of Coal Chemical Wastewater in UV-Catalytic Wet Hydrogen Peroxide Oxidation System

Highly Efficient Solar‐Driven Dry Reforming of Methane on a Rh/LaNiO₃ Catalyst through a Light‐induced Metal‐To‐Metal Charge Transfer Process

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A review on dry reforming of methane over perovskite derived catalysts

Cited by 131 publications

References 195 publications

Propane Steam Reforming over Catalysts Derived from Noble Metal (Ru, Rh)-Substituted LaNiO3 and La0.8Sr0.2NiO3 Perovskite Precursors

Propane Steam Reforming over Catalysts Derived from Noble Metal (Ru, Rh)-Substituted LaNiO3 and La0.8Sr0.2NiO3 Perovskite Precursors

Preparation of Supported Perovskite Catalyst to Purify Membrane Concentrate of Coal Chemical Wastewater in UV-Catalytic Wet Hydrogen Peroxide Oxidation System

Highly Efficient Solar‐Driven Dry Reforming of Methane on a Rh/LaNiO3 Catalyst through a Light‐induced Metal‐To‐Metal Charge Transfer Process

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Highly Efficient Solar‐Driven Dry Reforming of Methane on a Rh/LaNiO₃ Catalyst through a Light‐induced Metal‐To‐Metal Charge Transfer Process