Polyelectrolyte Assisted Preparation of Nanocatalysts for CO2 Methanation
Lei Liu, Paul Bernazzani, Wei Chu, Shi-Zhong Luo, Bin Wang and Zhanhu Guo
1 School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
2 Department of Chemistry and Biochemistry, Lamar University, Beaumont, Texas, 77710, USA
3 Engineered Multifunctional Composites (EMC) Nanotech, Knoxville, TN, 37934, USA
4 Integrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, 37996, USA
Abstract
The desire to form supported nanoparticles with fine-tuned size and distribution motivates the application of speciation-control of precursors. We propose to use a ternary metal ion/polyelectrolyte/oxide support hybrid as the means to generate a controlled precursor species. We first modify alumina with poly(acrylic acid), followed by nickel ion sorption to generate catalyst precursors. The precursors are then converted to catalysts used in CO2 methanation. The parameters of polyelectrolyte incorporation are found to play a critical role in determining the resultant catalyst performances. The application of polyelectrolyte in assisting metal nanoparticle formation on oxide support emerges as a versatile, potentially universal, and industrially relevant approach to manufacturing heterogeneous catalysts..
Publication details
Received: 18 Apr 2018
Accepted: 15 May 2018
Published online: 16 May 2018
Article type:
Research Paper
DOI:
10.30919/es8d637
Volume:
2
Page:
74-81
Citation:
Engineered Science, 2018, 2, 74-81
Permissions:
Copyright
Number of downloads:
6731
Citation Information:
7
Description:
Conformational variation of polyelectrolyte molecules inside support oxide influence metal nanoparti....
Conformational variation of polyelectrolyte molecules inside support oxide influence metal nanoparticle formation, in turn affecting the catalytic performance of the nanocatalysts.
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