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题名: Upgrading ethanol to n-butanol over highly dispersed Ni-MgAlO catalysts
作者: Pang, Jifeng1;  Zheng, Mingyuan1;  He, Lei1, 2;  Li, Lin1;  Pan, Xiaoli1;  Wang, Aiqin1;  Wang, Xiaodong1;  Zhang, Tao1
关键词: Ethanol ;  n-Butanol ;  Nickel ;  Hydrotalcite ;  Acid-base sites
刊名: JOURNAL OF CATALYSIS
发表日期: 2016-12-01
DOI: 10.1016/j.jcat.2016.08.024
卷: 344, 页:184-193
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Ethanol is widely used as a fuel blender for gasoline. However, it has a low energy content and blending ratio. The fuel quality can be improved by upgrading ethanol to high-energy-content alcohols such as n-butanol. Here, we synthesized high-carbon alcohols from ethanol over Ni-based catalysts in a fixed-bed reactor. The selectivities for n-butanol and C-4-C-8 alcohols reached 55.2% and 85%, respectively, at 18.7% ethanol conversion over the optimal catalyst, Ni4MgAlO, with an areal reaction rate of 62.61 mu mol(-1) M-2 at 523 K. The effects of Ni promotion and acid-base site distributions of catalysts were investigated using various techniques. The results show that metallic Ni sites promoted ethanol dehydrogenation, and the released hydrogen spilled over the catalyst, leading to in situ hydrogenation of reaction intermediates. Strong basic and moderately acidic sites were needed for aldol condensation reactions. A reaction network was proposed based on product analysis under different conditions. (C) 2016 Elsevier Inc. All rights reserved.
关键词[WOS]: HYDROTALCITE-TYPE PRECURSORS ;  LAYERED DOUBLE HYDROXIDES ;  AL MIXED OXIDES ;  GAS-PHASE ;  BIO-ETHANOL ;  METAL ;  CONVERSION ;  HYDROXYAPATITE ;  1-BUTANOL ;  NANOPARTICLES
语种: 英语
WOS记录号: WOS:000390182800018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151833
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, POB 110, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China

Recommended Citation:
Pang, Jifeng,Zheng, Mingyuan,He, Lei,et al. Upgrading ethanol to n-butanol over highly dispersed Ni-MgAlO catalysts[J]. JOURNAL OF CATALYSIS,2016,344:184-193.
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