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In situ fabrication of layered double hydroxide film immobilizing gold nanoparticles in capillary microreactor for efficient carbonylation of glycerol

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In situ fabrication of layered double hydroxide film immobilizing gold nanoparticles in capillary microreactor for efficient carbonylation of glycerol
 

Qi Ming Sheab     Jia Hui Liua     Cyril Aymonierc      Chun Hui Zhouad


Highlights

 

Layered double hydroxides crystallite were in situ fabricated on inner wall of capillary.

Thickness and morphology of LDH film on inner-wall of capillary was finely controlled.

Au NPs were immobilized on layered double hydroxides film.

Au/LDH film showed good catalytic activity in carbonylation of glycerol with urea.

The productivity of glycerol carbonate reached 3.78 g•h−1•g−1 on Au/LDH catalytic film.

Abstract

Microreactor is capable of intensifying catalytic reaction processes. The fabricating of catalytic film inside microchannels for catalytic reaction remains a challenge. Here we report a facile method for in situ fabrication of layered double hydroxide (LDH) film immobilizing gold nanoparticles in capillary microreactor. Through adjusting the reaction condition of in situ hydrothermal crystallization process and flow deposition process inside microchannel, film thickness, film morphology and Au loading of Au/LDH coating can be finely controlled. Such Au/LDH film inside microchannel exhibited good performance in catalytic carbonylation of glycerol with urea. The yield of glycerol carbonate reached 31.9% at flow rate of 10 µl/min, residence time of 6.62 min and reaction temperature of 413 K under atmospheric pressure. The maximum productivity of 3.78 g∙h−1⋅g−1 was obtained at flow rate of 40 µl/min and residence time of 1.65 min under same reaction temperature and pressure. Continuously running the microreactor for 30 h proved the high stability of this catalytic film inside microchannels. This approach could be extended to fabricate other diatomic and triatomic metal LDH films immobilizing metal nanoparticles inside microchannels for heterogeneous catalysis.
 

Graphical abstract

 

In situ fabrication of layered double hydroxide film immobilizing gold nanoparticles in capillary microreactor for efficient carbonylation of glycerol

 

aResearch Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Institute of Industrial Catalysis, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
bCollege of Chemistry and Chemical Engineering, Huangshan University, Huangshan, China
cCNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
dQing Yang Institute for Industrial Minerals, Youhua, Qingyang, Chizhou, Anhui, 242804, China
Corresponding author at: Zhejiang University of Technology, College of Chemical Engineering, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Institute of Industrial Catalysis, Hangzhou 310014, China.

 

Journal
Molecular Catalysis
Article number
111825

Article reference

MCAT_111825
Journal
Molecular Catalysis
Corresponding author
Chun Hui Zhou
First author
She Qi Ming
Received at Editorial Office
5 May 2021
Article revised
5 Jul 2021
Article accepted for publication
7 Aug 2021

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