Regulation of metal-support interface of Ni/CeO2 catalyst and the performance of low temperature chemical looping dry reforming of methane

被引：0

作者：

Li R.-J. ^{[1
]}

Zhang J.-P. ^{[1
]}

Shi J. ^{[1
]}

Li K.-Z. ^{[1
,2
]}

Liu H.-L. ^{[1
,2
]}

Zhu X. ^{[1
,2
]}

机构：

[1] School of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming

[2] State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2022年 / 50卷 / 11期

基金：

中国国家自然科学基金;

关键词：

carbon dioxide; CeO[!sub]2[!/sub; chemical looping; crystal facets; methane;

D O I：

10.1016/S1872-5813(22)60032-X

中图分类号：

学科分类号：

摘要：

Interface regulation is an effective strategy to improve the interaction between carrier and active metal center, which can improve the catalytic activity and oxygen storage capacity of the catalysts. In this paper, Ni/CeO2 catalysts supported on CeO2 with different morphologies (nanorods, nanocubes, nanoctahedrons and nanopolyhedrons) were synthesized. The structure dependence of the catalysts for the low temperature chemical looping dry reforming of methane (CL-DRM) was investigated. The characterization results showed that Ni species were highly dispersed on the surface of CeO2 carrier, and some Ni ions entered the CeO2 lattice, resulting in the increase of oxygen vacancies. The Ni/ceria-rods catalyst had the highest reducibility, the most oxygen vacancies and the highest oxygen storage capacity. The irregular CeO2 nano single crystal of about 10.3 nm in the Ni/ceriapolyhedra led to high specific surface area and high reducibility which exhibited the highest redox activity and redox stability in low-temperature chemical looping dry reforming of methane at 550 ℃. This study provided a new strategy for the design of efficient metal/CeO2 catalysts, which was expected to promote the application of cerium-based catalysts in chemical looping technology. © 2022 Science Press. All rights reserved.

引用

页码：1458 / 1470

页数：12

共 50 条

[1] ARAMOUNI NA K, ZEAITER J, KWAPINSKI W, AHMAD MN., Thermodynamic analysis of methane dry reforming: Effect of the catalyst particle size on carbon formation[J], Energy Conv Manag, 150, (2017)
[2] LARIONOV K B, GROMOV A A., Non-isothermal oxidation of coal with Ce(NO3)3 and Cu(NO3)2 additives[J], Int J Coal Sci Technol, 6, 1, (2019)
[3] CHEN S, ZAFFRAN J, YANG B., Dry reforming of methane over the cobalt catalyst: Theoretical insights into the reaction kinetics and mechanism for catalyst deactivation[J], Appl Catal B: Environ, 270, (2020)
[4] ZHANG X, ZHANG L, PENG H, YOU X, PENG C., Nickel nanoparticles embedded in mesopores of AlSBA-15 with a perfect peasecod-like structure: A catalyst with superior sintering resistance and hydrothermal stability for methane dry reforming[J], Appl Catal B: Environ, 224, pp. 488-499, (2018)
[5] QING W, Lin C, CHENG W, XIAO X., Enhancing the activity of iron based oxygen carrier via surface controlled preparation for lignite chemical looping combustion[J], Chem J Chin Univ, 36, 1, (2015)
[6] ZENG L, HUANG F, ZHU X, ZHENG M, LI K., Chemical looping of methane over CeO2-based and Co3O4-CeO2 oxygen carriers: Controlling of product selectivity[J], Chem J Chin Univ, 38, 1, (2017)
[7] ZENG L, LI K, HUANG F, ZHU X, LI H., Effects of Co3Oz nanocatalyst morphology on CO oxidation: Synthesis process map and catalytic activity[J], Chin J Catal, 37, 6
[8] LOFBERG A, KANE T, GUERRERO-CABALLERO J, JALOWIECKI-DUHAME L., Chemical looping dry reforming of methane: Toward shale-gas and biogas valorization[J], Chem Eng Process, 122, pp. 523-529, (2017)
[9] ZHU X, GAO Y, WANG X, HARIBAL V, LIU J, NEAL L M., A tailored multi-functional catalyst for ultra-efficient styrene production under a cyclic redox scheme[J], Nat Commun, 12, 1, (2021)
[10] ZHU X, IMTIAZ Q, DONAT F, MULLER CR, LI F., Chemical looping beyond combustion - a perspective[J], Energy Environ Sci, 13, 3, pp. 772-804, (2020)

← 1 2 3 4 5 →