Ni catalysts for dry methane reforming prepared by A-site exsolution on mesoporous defect spinel magnesium aluminate

被引：41

作者：

Cho, Eunkyung ^{[1
]}

Lee, Young-Hee ^{[2
]}

Kim, Hyunjoung ^{[2
]}

Jang, Eun Jeong ^{[3
]}

Kwak, Ja Hun ^{[3
]}

Lee, Kyubock ^{[2
]}

Ko, Chang Hyun ^{[1
]}

Yoon, Wang Lai ^{[4
]}

机构：

[1] Chonnam Natl Univ, Sch Chem Engn, Gwangju 61186, South Korea

[2] Chungnam Natl Univ, Grad Sch Energy Sci & Technol, Daejeon 34134, South Korea

[3] Ulsan Natl Inst Sci & Technol UNIST, Sch Energy & Chem Engn, Ulsan 44919, South Korea

[4] Korea Inst Energy Res, Hydrogen Energy Res Ctr, Daejeon 34129, South Korea

来源：

APPLIED CATALYSIS A-GENERAL | 2020年 / 602卷

基金：

新加坡国家研究基金会;

关键词：

Mesoporous magnesium aluminate; Defect spinel structure; Dry methane reforming; Ni catalyst; A-site exsolution; NANOCRYSTALLINE MGAL2O4 SPINEL; CO2; NICKEL; PERFORMANCE; PEROVSKITE; REDUCTION; PARTICLES; STABILITY; ZEOLITES; SUPPORT;

D O I：

10.1016/j.apcata.2020.117694

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In dry methane reforming, the selection of a suitable support is critical due to coke formation and metal particle sintering. We prepared two types of mesoporous defect spinel magnesium aluminate support, namely DS09, with a Mg/Al molar ratio (Mg/Al) of 0.1, and DS19 with Mg/Al = 0.24. Each support has a high surface area, large mesopore volume, and a phase between its defect spinel (Mg0.388Al2.408O4) and spinel (MgAl2O4) structures. Magnesium aluminate with a Mg/Al of 0.5 (MG30), which has a low surface area and is devoid of mesopores, was used as the reference support. Ni was supported on DS09 (Ni-DS09) and DS19 (Ni-DS19) by A-site ex-solution. These catalysts display significant advantages over Ni-supported MG30 (Ni-MG30); Ni-DS19 exhibited a higher coke resistance than Ni-DS09, due to its lower acidity, while DS19, which contains a defect spinel structure, optimized acidity, and well-developed mesopores, was the best support for the DMR.

引用

页数：9

共 39 条

[31] TEMPERATURE-PROGRAMMED REDUCTION STUDY OF NIO-MGO INTERACTIONS IN MAGNESIA-SUPPORTED NI CATALYSTS AND NIO-MGO PHYSICAL MIXTURE [J].

PARMALIANA, A ;

ARENA, F ;

FRUSTERI, F ;

GIORDANO, N .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (14) :2663-2669

[32] Effect of composition and thermal pretreatment on properties of Ni-Mg-Al catalysts for CO2 reforming of methane [J].

Perez-Lopez, OW ;

Senger, A ;

Marcilio, NR ;

Lansarin, MA .

APPLIED CATALYSIS A-GENERAL, 2006, 303 (02) :234-244

[33] A-site deficient perovskite: the parent for in situ exsolution of highly active, regenerable nano-particles as SOFC anodes [J].

Sun, Yifei ;

Li, Jianhui ;

Zeng, Yimin ;

Amirkhiz, Babak Shalchi ;

Wang, Mengni ;

Behnamian, Yashar ;

Luo, Jingli .

JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (20) :11048-11056

[34]

Szanyi J, 2014, PHYS CHEM CHEM PHYS, V16, P15117, DOI 10.1039/c4cp00616j

[35] Correlation between activity and acidity on zeolites: a high temperature infrared study of adsorbed acetonitrile [J].

Thibault-Starzyk, F ;

Travert, A ;

Saussey, J ;

Lavalley, JC .

TOPICS IN CATALYSIS, 1998, 6 (1-4) :111-118

[36] Step-change in high temperature steam electrolysis performance of perovskite oxide cathodes with exsolution of B-site dopants [J].

Tsekouras, George ;

Neagu, Dragos ;

Irvine, John T. S. .

ENERGY & ENVIRONMENTAL SCIENCE, 2013, 6 (01) :256-266

[37] Significant roles of mesostructure and basic modifier for ordered mesoporous Ni/CaO-Al2O3 catalyst towards CO2 reforming of CH4 [J].

Xu, Leilei ;

Miao, Zhichao ;

Song, Huanling ;

Chen, Wei ;

Chou, Lingjun .

CATALYSIS SCIENCE & TECHNOLOGY, 2014, 4 (06) :1759-1770

[38] A review of CH4-CO2 reforming to synthesis gas over Ni-based catalysts in recent years (2010-2017) [J].

Zhang, Guojie ;

Liu, Jiwei ;

Xu, Ying ;

Sun, Yinghui .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2018, 43 (32) :15030-15054

[39] Exsolution of Re-alloy catalysts with enhanced stability for methane dry reforming [J].

Zubenko, Daria ;

Singh, Sarika ;

Rosen, Brian A. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 209 :711-719

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