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Highly Dispersed Ni Nanocatalysts Derived from NiMnAl-Hydrotalcites as High-Performing Catalyst for Low-Temperature Syngas Methanation
Lu, Bin1,2; Zhuang, Jiahao1,2; Du, Jinping1; Gu, Fangna1,3; Xu, Guangwen4; Zhong, Ziyi5; Liu, Qing6; Su, Fabing1,3,4
2019-03-01
Source PublicationCATALYSTS
ISSN2073-4344
Volume9Issue:3Pages:15
AbstractIncreasing the low-temperature performance of nickel-based catalysts in syngas methanation is critical but very challenging, because at low temperatures there is high concentration of CO on the catalyst surface, causing formation of nickel carbonyl with metallic Ni and further catalyst deactivation. Herein, we have prepared highly dispersed Ni nanocatalysts by in situ reduction of NiMnAl-layered double hydroxides (NiMnAl-LDHs) and applied them to syngas methanation. The synthesized Ni nanocatalysts maintained the nanosheet structure of the LDHs, in which Ni particles were decorated with MnOy species and embedded in the AlOx nanosheets. It was observed that the Ni nanocatalysts exhibited markedly better low-temperature performance than commercial catalysts in the syngas methanation. At 250 degrees C, 3.0 MPa and a high weight hourly space velocity (WHSV) of 30,000 mL g( -1) h( -1), both the CO conversion and the CH4 selectivity reached 100% over the former, while those over the commercial catalyst were only 14% and 76%, respectively. Furthermore, this NiMnAl catalyst exhibited strong anti-carbon and anti-sintering properties at high temperatures. The enhanced low-temperature performance and high-temperature stability originated from the promotion effect of MnOy and the embedding effect of AlOx in the catalyst.
Keywordlow-temperature methanation nickel carbonyl NiMnAl-LDHs Ni nanocatalysts
DOI10.3390/catal9030282
Language英语
WOS KeywordSOLUTION COMBUSTION METHOD ; SELECTIVE CO METHANATION ; ENHANCED ACTIVITY ; AL CATALYSTS ; COMPOSITE OXIDE ; GAS ; NANOCOMPOSITES
Funding ProjectNational Key R&D Program of China[2018YFB0604501] ; National Natural Science Foundation of China[21776286]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China
WOS IDWOS:000465012800062
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28304
Collection中国科学院过程工程研究所
Corresponding AuthorGu, Fangna; Su, Fabing
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Zhongke Langfang Inst Proc Engn, Langfang Econ & Tech Dev Zone, Fenghua Rd 1, Langfang 065001, Hebei, Peoples R China
4.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Sch Chem Engn, Shenyang 110142, Liaoning, Peoples R China
5.GTIIT, Coll Engn, 243 Daxue Rd, Shantou 515063, Peoples R China
6.Shandong Univ Sci & Technol, Key Lab Low Carbon Energy & Chem Engn, Coll Chem & Environm Engn, Qingdao 266590, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Lu, Bin,Zhuang, Jiahao,Du, Jinping,et al. Highly Dispersed Ni Nanocatalysts Derived from NiMnAl-Hydrotalcites as High-Performing Catalyst for Low-Temperature Syngas Methanation[J]. CATALYSTS,2019,9(3):15.
APA Lu, Bin.,Zhuang, Jiahao.,Du, Jinping.,Gu, Fangna.,Xu, Guangwen.,...&Su, Fabing.(2019).Highly Dispersed Ni Nanocatalysts Derived from NiMnAl-Hydrotalcites as High-Performing Catalyst for Low-Temperature Syngas Methanation.CATALYSTS,9(3),15.
MLA Lu, Bin,et al."Highly Dispersed Ni Nanocatalysts Derived from NiMnAl-Hydrotalcites as High-Performing Catalyst for Low-Temperature Syngas Methanation".CATALYSTS 9.3(2019):15.
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