Steam reforming of acetic acid over Ni/ZrO2 catalysts: Effects of nickel loading and particle size on product distribution and coke formation

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	Steam reforming of acetic acid over Ni/ZrO2 catalysts: Effects of nickel loading and particle size on product distribution and coke formation
	Li ZK(李志鲲)1,2; Hu X(胡勋)1,2; Zhang LJ(张立军)3; Liu SM(刘绍民)3; Lv GX(吕功煊)1
刊名	Applied Catalysis A: General
	2012
卷号	417 页码:281-289
关键词	Acetic acid Steam reforming Ni/ZrO2 catalyst Nickel loading Coke formation
ISSN号	0926-860X
通讯作者	吕功煊
英文摘要	Steam reforming of acetic acid has been carried out over a series of Ni/ZrO₂ catalysts to measure the effects of nickel loading on distribution of the reforming products and coke formation. Ni (≤13 wt.%)/ZrO₂ catalysts do not contain enough active metal sites for steam reforming of both acetic acid and organic by-products. Ni (≥20 wt.%)/ZrO₂ catalysts can effectively catalyze steam reforming but lack selectivity, since methanation and reverse water gas shift reactions are promoted, leading to low hydrogen yields. Ni (16 wt.%)/ZrO₂ catalyst is the most selective one, due to its low activity to the secondary reactions that contribute to by-product production. Coke formation is suppressed with the increase of nickel loading up to 16 wt.%, and then restarts to increases with the further increase of nickel loading. Polymerization of acetone is the main route for coke deposition over the Ni (≤13 wt.%)/ZrO₂ catalysts. Methane decomposition and CO disproportion are the two main routes for coke formation over the Ni (≥20 wt.%)/ZrO₂ catalysts, and methane contributes more to coke formation than CO. In addition, activity of Ni/ZrO₂ catalyst towards the secondary reactions such as methanation, reverse water gas shift reaction, methane decomposition, and CO disproportion are closely related to nickel loading and nickel particle sizes.
学科主题	物理化学与绿色催化
收录类别	SCI
资助信息	the 973 Project of China (Nos. 2007CB210204;2007CB613305;2009CB220003)
语种	英语
WOS记录号	WOS:000301913900034
公开日期	2013-10-11
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/3849]
专题	兰州化学物理研究所_OSSO国家重点实验室兰州化学物理研究所_ERC国家工程研究中心
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Natl Engn Res Ctr Fine Petrochem Intermediates, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia
推荐引用方式 GB/T 7714	Li ZK,Hu X,Zhang LJ,et al. Steam reforming of acetic acid over Ni/ZrO2 catalysts: Effects of nickel loading and particle size on product distribution and coke formation[J]. Applied Catalysis A: General,2012,417:281-289.
APA	Li ZK,Hu X,Zhang LJ,Liu SM,&Lv GX.(2012).Steam reforming of acetic acid over Ni/ZrO2 catalysts: Effects of nickel loading and particle size on product distribution and coke formation.Applied Catalysis A: General,417,281-289.
MLA	Li ZK,et al."Steam reforming of acetic acid over Ni/ZrO2 catalysts: Effects of nickel loading and particle size on product distribution and coke formation".Applied Catalysis A: General 417(2012):281-289.