Acoustic cavitation and ultrasound-assisted nitration process in ultrasonic microreactors: The effects of channel dimension, solvent properties and temperature

doi:10.1016/j.cej.2019.05.157

	Acoustic cavitation and ultrasound-assisted nitration process in ultrasonic microreactors: The effects of channel dimension, solvent properties and temperature
	Zhao, Shuainan 1,2; Yao, Chaoqun 1; Zhang, Qiang 1,2; Chen, Guangwen 1; Yuan, Quan 1
刊名	CHEMICAL ENGINEERING JOURNAL
	2019-10-15
卷号	374 页码:68-78
关键词	Acoustic cavitation Meso-scale Confinement effect Nitration reaction Ultrasonic microreactors
ISSN号	1385-8947
DOI	10.1016/j.cej.2019.05.157
通讯作者	Chen, Guangwen(gwchen@dicp.ac.cn)
英文摘要	Experimental studies on acoustic cavitation and ultrasound-assisted nitration reaction were systematically investigated in two laboratory-built ultrasonic microreactors by tuning the microchannel dimension, solvent properties and temperature. Under ultrasound irradiation, acoustic cavitation microbubbles were generated and underwent violent oscillation in microchannel. With the decrease of channel size, acoustic cavitation was largely confined, and channel size 1 x 1 mm(2) was recognized as the critical size to eliminate the confinement effect. Acoustic cavitation was also highly dependent on the properties of sonicated liquids. The onset of surface wave oscillation on gas bubble was obviously promoted with decreasing solvent viscosity and surface tension. Additionally, ultrasound-assisted nitration process of toluene was studied in a temperature-controlled ultrasonic microreactor. The effects of channel size as well as liquid properties on ultrasound intensification agreed well with the finding in cavitation research. Under ultrasound power 50 W, toluene conversion was enhanced by 9.9%-36.3% utilizing 50 vol.% ethylene glycol aqueous solution as ultrasound propagation medium, exhibiting ultrasound applicability on intensifying fast reaction processes in microreactors.
资助项目	National Natural Science Foundation of China[91634204] ; National Natural Science Foundation of China[U1608221] ; Dalian Science & Technology Innovation Fund[2018J11CY019] ; DICP[DICP ZZBS 201706] ; Youth Innovation Promotion Association CAS-China[2017229]
WOS关键词	GAS-LIQUID FLOW ; MASS-TRANSFER ; SCALE-UP ; HYDRODYNAMICS ; REACTORS ; BUBBLES ; GREENER ; ACID
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000477652900008
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian Science & Technology Innovation Fund ; Dalian Science & Technology Innovation Fund ; DICP ; DICP ; Youth Innovation Promotion Association CAS-China ; Youth Innovation Promotion Association CAS-China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian Science & Technology Innovation Fund ; Dalian Science & Technology Innovation Fund ; DICP ; DICP ; Youth Innovation Promotion Association CAS-China ; Youth Innovation Promotion Association CAS-China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian Science & Technology Innovation Fund ; Dalian Science & Technology Innovation Fund ; DICP ; DICP ; Youth Innovation Promotion Association CAS-China ; Youth Innovation Promotion Association CAS-China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Dalian Science & Technology Innovation Fund ; Dalian Science & Technology Innovation Fund ; DICP ; DICP ; Youth Innovation Promotion Association CAS-China ; Youth Innovation Promotion Association CAS-China
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/173971]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Chen, Guangwen
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Shuainan,Yao, Chaoqun,Zhang, Qiang,et al. Acoustic cavitation and ultrasound-assisted nitration process in ultrasonic microreactors: The effects of channel dimension, solvent properties and temperature[J]. CHEMICAL ENGINEERING JOURNAL,2019,374:68-78.
APA	Zhao, Shuainan,Yao, Chaoqun,Zhang, Qiang,Chen, Guangwen,&Yuan, Quan.(2019).Acoustic cavitation and ultrasound-assisted nitration process in ultrasonic microreactors: The effects of channel dimension, solvent properties and temperature.CHEMICAL ENGINEERING JOURNAL,374,68-78.
MLA	Zhao, Shuainan,et al."Acoustic cavitation and ultrasound-assisted nitration process in ultrasonic microreactors: The effects of channel dimension, solvent properties and temperature".CHEMICAL ENGINEERING JOURNAL 374(2019):68-78.