Mechanism for catalytic cracking of coal tar over fresh and reduced LaNi1-xFexO3 perovskite

Cui, Xin; Wu, Tonghao; Cao, Jing‐Pei; Tang, Wen; Yang, Fenghuan; Zhu, Beibei; Wang, Zheng

doi:10.1016/j.fuel.2020.119683

Cited by 15 publications

(7 citation statements)

References 48 publications

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“…The XPS spectra of LMNO (Figure S1a–c, Supporting Information) reveal the classical perovskite feature by comparing with previous reports. [ 40–44 ]…”

Section: Resultsmentioning

confidence: 99%

“…The XPS spectra of LMNO (Figure S1a-c, Supporting Information) reveal the classical perovskite feature by comparing with previous reports. [40][41][42][43][44] To further reveal Li + insertion/extraction mechanism, in situ XRD and ex situ XRD are employed to observe the change of 3b, except for the peaks of Cu mesh current collector and Be window, the intensity of peaks of LMNO-S electrode reduced slowly during the lithiation process, which also correspond to the SEI growth process. And there is no appearance of new peaks or disappearance of original peaks at a later delithiation process when comparing with LMNO-S (Figure 2a, and Figure S2b, Supporting Information), indicating Note that in double-perovskite crystalline, the spacing of (022) crystal plane is equal to that of (202), ( 022) and (220).…”

Section: Resultsmentioning

confidence: 99%

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Double Perovskite La₂MnNiO₆ as a High‐Performance Anode for Lithium‐Ion Batteries

Zhang

Nie

et al. 2023

Advanced Science

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Traditional lithium‐ion batteries cannot meet the ever‐increasing energy demands due to the unsatisfied graphite anode with sluggish electrochemical kinetics. Recently, the perovskite material family as anode attracts growing attention due to their advantages on specific capacity, rate capability, lifetime, and safety. Herein, a double perovskite La2MnNiO6 synthesized by solid‐state reaction method as a high‐performance anode material for LIBs is reported. La2MnNiO6 with an average operating potential of <0.8 V versus Li+/Li exhibits a good rate capability. Besides, the Li|La2MnNiO6 cells perform long cycle life without decay after 1000 cycles at 1C and a high cycling retention of 93% is observed after 3000 cycles at 6C. It reveals that this material maintains stable perovskite structure with cycling. Theoretical calculations further demonstrate the high electronic conductivity, low diffusion energy barrier, and structural stability of the lithiated La2MnNiO6. This study highlights the double perovskite type material as a promising anode for next‐generation batteries.

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“…The XPS spectra of LMNO (Figure S1a–c, Supporting Information) reveal the classical perovskite feature by comparing with previous reports. [ 40–44 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Double Perovskite La₂MnNiO₆ as a High‐Performance Anode for Lithium‐Ion Batteries

Zhang

Nie

et al. 2023

Advanced Science

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“…In the case of the double La 2 NiFeO 6 perovskite, however, a minimal peak and a broad peak appear at around 265.4 and 740.3 °C, corresponding to the partial reduction of Ni 3+ to Ni 2+ and the complete reduction of Ni and Fe cations to their metallic states, respectively. 68 The lower temperature of the main peak on the double La 2 NiFeO 6 perovskite than that of LaFeO 3 (893 °C) clearly suggests that the removal of lattice oxygen from the bulk phase can be facilitated by adding Ni cations.…”

Section: Methodsmentioning

confidence: 99%

Fundamental Aspects of Enhancing Low-Temperature CO₂ Splitting to CO on a Double La₂NiFeO₆ Perovskite

et al. 2021

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This paper addresses the synergistic effect of binary Ni–Fe sites in double La2NiFeO6 perovskite on low-temperature CO2 conversion to CO in the reverse water–gas shift-chemical looping process. Experimental investigations and DFT calculations proved that, for the reduction of perovskite, the Ni-site facilitates the formation of surface oxygen vacancies and the adsorption of hydrogen with agile lattice oxygen mobility. Thus, incorporating Ni can improve the reducibility at low temperature. The Fe-site prevents strong adsorption of the CO2 molecules on the La-site to facilitate its direct dissociation into CO molecules, and thereby CO2 conversion increases with Fe loading. Consequently, La2NiFeO6 can satisfy both high reducibility and CO2 splitting activity by the synergy of binary Ni–Fe sites. It presents an average CO productivity of 2.14 mmol/gcat and a maximum CO production rate of 1.69 mmol/gcat·min at 700 °C, more than 4.7-fold and 10-fold higher than each single LaNiO3 and LaFeO3 perovskites, respectively.

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“…Employing an excellent catalyst, for instance, perovskite oxides with a certain amount of oxygen vacancies, especially doping metal into ABO 3 or A 2 BO 4 -type perovskite structures could be helpful to anti-oxidation and anti-poisoning abilities of the catalyst in heterogeneous reaction. − Quitete et al prepared LaMnO 3 -type perovskites via a citrate method and systemically investigated the effects of La/Mn ratios on the activity of toluene reforming at 700 °C under 50 ppm of H 2 S. The results showed that LaNi 0.5 Mn 0.5 O 3 was the most active and stable in the absence of H 2 S, and the LaMnO 3 catalyst had the highest anti-poisoning activity but low toluene conversion (60%) in the presence of H 2 S. Cui et al synthesized various LaNi 1– x Fe x O 3 perovskites and demonstrated that catalysts without reduction had higher gas yield in tar reforming at 700 °C, and the reduced catalyst produced higher carbon deposition and less tar conversion. Fresh LaNi 0.8 Fe 0.2 O 3 with an optimized composition and perovskite structure exhibited the highest gas yield (34.8 mmol/g coal ), lowest carbon deposition (10.9%), and lowest tar production (0.05%), respectively.…”

Section: Catalyst Regenerationmentioning

confidence: 99%

Understandings of Catalyst Deactivation and Regeneration during Biomass Tar Reforming: A Crucial Review

Ren

Cao

Yang

et al. 2021

ACS Sustainable Chem. Eng.

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Value-added chemicals originating from biomass gasification in the presence of advanced catalysts have proved to be promising for valuable chemical generation via deep processing. In the issues of biomass gasification, the deactivation of heterogeneous catalysts is a common problem during the reforming of biomass tar and derived model compounds. Herein, deactivation pathways and regeneration methods are crucial to understand the production of value-added chemicals and guide the design of heterogeneous catalysts during biomass gasification. Unfortunately, to the best of our knowledge, there still has been no review to conclude the recent advances in catalyst deactivation and regeneration. To address the issues mentioned above, in this perspective, common catalysts for biomass tar reforming are first discussed. Then, key features and considerations of catalyst deactivation especially catalyst poisoning and carbon deposition are comprehensively reviewed based on the latest literature reports. Finally, the possible methods of tar elimination, metallic site recovery, and catalyst optimization are reviewed. Meanwhile, the future perspectives toward catalyst design, deactivation, and regeneration in tar reforming are shared. Through this perspective, the existing challenges, solutions, and future strategies in tar reforming or other gas−solid reactions are expected to be made clearer for following research on practical applications on an industrial scale.

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Mechanism for catalytic cracking of coal tar over fresh and reduced LaNi1-xFexO3 perovskite

Cited by 15 publications

References 48 publications

Double Perovskite La₂MnNiO₆ as a High‐Performance Anode for Lithium‐Ion Batteries

Double Perovskite La₂MnNiO₆ as a High‐Performance Anode for Lithium‐Ion Batteries

Fundamental Aspects of Enhancing Low-Temperature CO₂ Splitting to CO on a Double La₂NiFeO₆ Perovskite

Understandings of Catalyst Deactivation and Regeneration during Biomass Tar Reforming: A Crucial Review

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Mechanism for catalytic cracking of coal tar over fresh and reduced LaNi1-xFexO3 perovskite

Cited by 15 publications

References 48 publications

Double Perovskite La2MnNiO6 as a High‐Performance Anode for Lithium‐Ion Batteries

Double Perovskite La2MnNiO6 as a High‐Performance Anode for Lithium‐Ion Batteries

Fundamental Aspects of Enhancing Low-Temperature CO2 Splitting to CO on a Double La2NiFeO6 Perovskite

Understandings of Catalyst Deactivation and Regeneration during Biomass Tar Reforming: A Crucial Review

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Product

Resources

About

Double Perovskite La₂MnNiO₆ as a High‐Performance Anode for Lithium‐Ion Batteries

Double Perovskite La₂MnNiO₆ as a High‐Performance Anode for Lithium‐Ion Batteries

Fundamental Aspects of Enhancing Low-Temperature CO₂ Splitting to CO on a Double La₂NiFeO₆ Perovskite