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N-doped mesoporous molecular sieves and their high-efficient adsorption for acetone

Xiao-Su Lu, Yin-Xian Peng, Hao Chen, Jian Dai, Ni Bai, and Jing Wang

School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China

 

E-mail: bnbaini@sina.com

Received: 22 September 2022  Accepted: 19 April 2023

Abstract:

With the increase of volatile organic compounds (VOCs) emissions, it is urgent to develop efficient and environmentally friendly adsorption technology for removing these VOCs. In this study, N-doped mesoporous molecular sieve adsorbents were prepared by using cetyltrimethylammonium bromide, urea and melamine as templates. The addition of urea and melamine improves the periodicity of mesoporous structure, significantly increases the specific surface area, pore size and pore volume, and modifies the surface properties. The adsorption capacity of N-doped mesoporous molecular sieve adsorbent for acetone is increased by 85% than that of pristine mesoporous silica, and more than 91.5% of the initial adsorption capacity is maintained after five adsorption and desorption cycles. The adsorption process is considered as a multilayer adsorption according to Freundlich models. This N-doped mesoporous molecular sieve is expected to an ideal adsorbent for reducing VOCs emission and protecting the environment.

Keywords: Mesoporous molecular sieve; Nitrogen-doping; Preparation; Adsorption; Acetone

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-02840-1

 

Chemical Papers 77 (9) 5021–5031 (2023)

Tuesday, May 28, 2024

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