Influence of mixing inside microreactor on microstructural evolution of Cu-ZnO catalyst

LING Chen; JIANG Xin; WANG Zhiyong; QIN Xiangfei; LU Jiangang

doi:10.11949/j.issn.0438-1157.20170976

您当前的位置：

首页 >

文章列表页 >

Influence of mixing inside microreactor on microstructural evolution of Cu-ZnO catalyst

更新时间：2025-12-10

- Influence of mixing inside microreactor on microstructural evolution of Cu-ZnO catalyst
- CIESC Journal Issue 2, Pages: 718-724(2018)
- 作者机构：
  
  1. 浙江大学化学工程与生物工程学院, 浙江省化工高效制造技术重点实验室,浙江,杭州,310027
  2. 浙江大学控制科学与工程学院, 工业控制技术国家重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170976
  CLC： Q426.6
- Online First：05 February 2018，
  
  Published：05 February 2018
- 稿件说明：
移动端阅览
LING Chen, JIANG Xin, WANG Zhiyong, et al. Influence of mixing inside microreactor on microstructural evolution of Cu-ZnO catalyst[J]. CIESC Journal, 2018, (2): 718-724.
DOI：

LING Chen, JIANG Xin, WANG Zhiyong, et al. Influence of mixing inside microreactor on microstructural evolution of Cu-ZnO catalyst[J]. CIESC Journal, 2018, (2): 718-724. DOI： 10.11949/j.issn.0438-1157.20170976.

摘要

通过对微反应器中流速的调控，研究了混合过程对Cu-ZnO催化剂微结构形成过程的影响。采用Villermaux-Dushman反应体系测量了不同流速下反应器中的混合状况，采用X射线衍射（XRD）、高倍电镜线扫（EDS）、X射线光电子能谱（XPS）分析了对应流速下制备得到的前体和氧化物的结构。结果显示，混合强度增加，前体中的Cu2+、Zn2+分布更为均匀，绿铜锌矿的比例减小，锌孔雀石中的Zn含量提高；进而导致其热分解形成的氧化物中Cu-Zn分布也更为均匀，CuO-ZnO界面增加，CuO晶粒粒径减小。研究表明，沉淀反应时混合条件的改变，导致后续系列中间产物中Cu-Zn分布的差异，通过这一路径，混合对反应的影响最终作用于催化剂结构。

Abstract

The influence of mixing inside the microreactor on the microstructural evolution of Cu-ZnO catalyst was investigated by regulating the flow rate. Mixing efficiency in the microreactor was measured by Villermaux-Dushman reaction system under different flow rates

and the structures of precursor and oxide were characterized by X-ray powder diffraction (XRD)

energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The results showed that with increase of the mixing intensity

the distribution of Cu2+ and Zn2+ in precursor becomes more uniform

the fraction of aurichalcite decreases and Zn content in zincian malachite rises. The difference in the precursors acts on the oxides

leading to a more uniform Cu-Zn distribution

a better dispersion between CuO and ZnO

and the decrease of CuO size. Above study reveals

it is by the Cu-Zn distribution that the changes of mixing during the precipitation affects the subsequent product and results in the difference in Cu-ZnO catalyst microstructure.

关键词

Keywords

references

Views

169

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effect of water layer on Cu-Zn co-precipitation in microreactor

Flow characteristics and micromixing performance of micro-CSTR with magnetic stirring

Synthesis process of trinitrophloroglucinol in an ultrasonic microreactor

Microreaction continuous synthesis of gold nanoparticles

Sonochemical microreactor-synergistic intensification of ultrasound and microreactor

Related Author

CHEN Xinchao

CHEN Shuaishuai

ZHONG Zihao

LIU Sai'er

SHANG Minjing

SU Yuanhai

Yuehui HOU

Xuan LIU

Related Institution

Key Laboratory of Thin Film and Microfabrication (Ministry of Education), School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University

Dalian Institute of Chemical Physics, Chinese Academy of Sciences

University of Chinese Academy of Sciences

Department of Chemical Engineering, State Key Laboratory of Chemical Engineering, Tsinghua University

Department of Chemical Engineering, KU Leuven, 3002.Leuven

⁰