Open Access

ARTICLE

Preparation and Characterization of Stellera Chamaejasme-Based Carbon Molecular Sieves

by Baian Shen, Haichao Li^*, Zixiang Guo, Jingxiao Li, Yuting Bao

Key Laboratory of Applied Physical Chemistry of Qinghai Provincial, Qinghai Nationalities University, Xining, 810007, China

* Corresponding Author: Haichao Li. Email:

Journal of Renewable Materials 2023, 11(1), 185-195. https://doi.org/10.32604/jrm.2023.020040

Received 31 October 2021; Accepted 08 February 2022; Issue published 10 August 2022

Abstract

The activation effect of boric acid as an activator is good, and we investigate the best activation conditions for the boric acid impregnation method. To represent the structural characteristics and adsorption performance of the Stellera Chamaejasme based carbon molecular sieves, we use Brunner-Emmet-Teller (BET) measurements, scanning electron microscope (SEM), Raman spectra (Raman), X-ray diffraction (XRD), and adsorption property measurement. When the loading ratio was 0.68:1, the specific surface area was 532.21 m²/g, the total pore volume was 0.24 cm³/g, the average pore size was 1.81 nm, the adsorption value of methylene blue was 145.28 mg/g, and the adsorption value of iodine was 713.33 mg/g, the results showed that boric acid had better activation effect. The carbon molecular sieves made from Stellera Chamaejasme and activated with boric acid produce two peaks on the aperture distribution graph that are densely distributed in the micropore range. This indicates that boric acid’s pore-forming tendency is primarily micropore.

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Keywords

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