Relationship between reaction and diffusion during ultrafineNiOreduction toward agglomeration fluidization

doi:10.1002/aic.17081

	Relationship between reaction and diffusion during ultrafineNiOreduction toward agglomeration fluidization
	Li, Jun 2; Zhu, Qingshan 1,2; Li, Hongzhong 2
刊名	AICHE JOURNAL
	2020-10-08
页码	11
关键词	agglomeration diffusion fluidization reaction kinetics ultrafine Ni powder
ISSN号	0001-1541
DOI	10.1002/aic.17081
英文摘要	The relationship between reaction and diffusion during ultrafine NiO reduction by H(2)in a fluidized bed reactor were investigated. The result illuminates that the reduction reaction proceeding in the unreduced NiO powders is according to the nucleation model. A modified force balance model between cohesive and collision forces incorporating grain-boundary diffusion and reaction is proposed to predict the agglomeration behavior of ultrafine Ni during the reduction of NiO in a fluidized bed. The modified force balance model shows more precise predictions than the model without consideration of grain-boundary diffusion. Based on the model, it is found that the core of the two-step reduction is to decouple grain growth from reduction for achieving full conversion while retaining nanosized grain sizes.
资助项目	National Natural Science Foundation of China[21736010] ; National Natural Science Foundation of China[21978300] ; National Natural Science Foundation of China[91334108] ; Innovative Research Group Project of National Natural Science Foundation of China[21921005]
WOS关键词	NICKEL-OXIDE REDUCTION ; CHEMICAL-LOOPING COMBUSTION ; NIO REDUCTION ; SELF-AGGLOMERATION ; IRON NANOPARTICLES ; MECHANISM ; PARTICLES ; KINETICS ; MODEL ; FINE
WOS研究方向	Engineering
语种	英语
出版者	WILEY
WOS记录号	WOS:000575929100001
资助机构	National Natural Science Foundation of China ; Innovative Research Group Project of National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/42376]
专题	中国科学院过程工程研究所
通讯作者	Zhu, Qingshan
作者单位	1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Jun,Zhu, Qingshan,Li, Hongzhong. Relationship between reaction and diffusion during ultrafineNiOreduction toward agglomeration fluidization[J]. AICHE JOURNAL,2020:11.
APA	Li, Jun,Zhu, Qingshan,&Li, Hongzhong.(2020).Relationship between reaction and diffusion during ultrafineNiOreduction toward agglomeration fluidization.AICHE JOURNAL,11.
MLA	Li, Jun,et al."Relationship between reaction and diffusion during ultrafineNiOreduction toward agglomeration fluidization".AICHE JOURNAL (2020):11.