Nickel Catalysts Supported on Barium Hexaaluminate for Enhanced CO Methanation

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	Nickel Catalysts Supported on Barium Hexaaluminate for Enhanced CO Methanation
	Gao, Jiajian 1,2; Jia, Chunmiao 1; Li, Jing 1; Gu, Fangna 1; Xu, Guangwen 1; Zhong, Ziyi 3; Su, Fabing 1
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2012-08-08
卷号	51 期号:31 页码:10345-10353
关键词	synthetic natural-gas selective methanation ni/al2o3 catalysts syngas production carbon-monoxide decomposition combustion oxides hydrogenation removal
ISSN号	0888-5885
其他题名	Ind. Eng. Chem. Res.
中文摘要	We report the preparation and characterization of Ni nanoparticles supported on barium hexaaluminate (BHA) as CO methanation catalysts for the production of synthetic natural gas (SNG). BHA with a high thermal stability was synthesized by a coprecipitation method using aluminum nitrate, barium nitrate, and ammonium carbonate as the precursors. The Ni catalysts supported on the BHA support (Ni/BHA) were prepared by an impregnation method. X-ray diffraction, nitrogen adsorption, transmission electron microscopy, thermogravimetric analysis, H-2 temperature-programmed reduction, O-2 temperature-programmed oxidation, NH3 temperature-programmed desorption, and X-ray photoelectron spectroscopy are used to characterize the samples. The CO methanation reaction was carried out at pressures of 0.1 and 3.0 MPa, weight hourly space velocities (WHSVs) of 30000, 120 000, and 240 000 mL.g(-1).h(-1), with a H-2/CO feed ratio of 3, and in the temperature range 300-600 degrees C. The results show that although the BHA support has a relatively low surface area, Ni/BHA catalysts displayed much higher activity than Al2O3-supported Ni catalysts (Ni/Al2O3) with a similar level of NiO loading even after high temperature hydrothermal treatment. Nearly 100% CO conversion and 90% CH4 yield were achieved over Ni/BHA (NiO, 10 wt %) at 400 degrees C, 3.0 MPa, and a WHSV of 30 000 mL.g(-1).h(-1). Long time testing indicates that, compared to Ni/Al2O3 catalyst, Ni/BHA is more stable and is highly resistant to carbon deposition. The superior catalytic performance of the Ni/BHA catalyst is probably related to the relatively larger Ni particle size (20-40 nm), the high thermal stability of BHA support with nonacidic nature, and moderate Ni-BHA interaction. The work demonstrates BHA would be a promising alternative support for the efficient Ni catalysts to SNG production.
英文摘要	We report the preparation and characterization of Ni nanoparticles supported on barium hexaaluminate (BHA) as CO methanation catalysts for the production of synthetic natural gas (SNG). BHA with a high thermal stability was synthesized by a coprecipitation method using aluminum nitrate, barium nitrate, and ammonium carbonate as the precursors. The Ni catalysts supported on the BHA support (Ni/BHA) were prepared by an impregnation method. X-ray diffraction, nitrogen adsorption, transmission electron microscopy, thermogravimetric analysis, H-2 temperature-programmed reduction, O-2 temperature-programmed oxidation, NH3 temperature-programmed desorption, and X-ray photoelectron spectroscopy are used to characterize the samples. The CO methanation reaction was carried out at pressures of 0.1 and 3.0 MPa, weight hourly space velocities (WHSVs) of 30000, 120 000, and 240 000 mL.g(-1).h(-1), with a H-2/CO feed ratio of 3, and in the temperature range 300-600 degrees C. The results show that although the BHA support has a relatively low surface area, Ni/BHA catalysts displayed much higher activity than Al2O3-supported Ni catalysts (Ni/Al2O3) with a similar level of NiO loading even after high temperature hydrothermal treatment. Nearly 100% CO conversion and 90% CH4 yield were achieved over Ni/BHA (NiO, 10 wt %) at 400 degrees C, 3.0 MPa, and a WHSV of 30 000 mL.g(-1).h(-1). Long time testing indicates that, compared to Ni/Al2O3 catalyst, Ni/BHA is more stable and is highly resistant to carbon deposition. The superior catalytic performance of the Ni/BHA catalyst is probably related to the relatively larger Ni particle size (20-40 nm), the high thermal stability of BHA support with nonacidic nature, and moderate Ni-BHA interaction. The work demonstrates BHA would be a promising alternative support for the efficient Ni catalysts to SNG production.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	SYNTHETIC NATURAL-GAS ; SELECTIVE METHANATION ; NI/AL2O3 CATALYSTS ; SYNGAS PRODUCTION ; CARBON-MONOXIDE ; DECOMPOSITION ; COMBUSTION ; OXIDES ; HYDROGENATION ; REMOVAL
收录类别	SCI
原文出处	://WOS:000307199600008
语种	英语
WOS记录号	WOS:000307199600008
公开日期	2013-11-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/6409]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.ASTAR, Inst Chem Engn & Sci, Jurong Isl 627833, Singapore
推荐引用方式 GB/T 7714	Gao, Jiajian,Jia, Chunmiao,Li, Jing,et al. Nickel Catalysts Supported on Barium Hexaaluminate for Enhanced CO Methanation[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2012,51(31):10345-10353.
APA	Gao, Jiajian.,Jia, Chunmiao.,Li, Jing.,Gu, Fangna.,Xu, Guangwen.,...&Su, Fabing.(2012).Nickel Catalysts Supported on Barium Hexaaluminate for Enhanced CO Methanation.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,51(31),10345-10353.
MLA	Gao, Jiajian,et al."Nickel Catalysts Supported on Barium Hexaaluminate for Enhanced CO Methanation".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 51.31(2012):10345-10353.