Synthesis of silica powder with high pore volume by skeleton reinforcement

Hongwei Shan; Xiaodong Zhou; Hao Jiang; Yanjie Hu; Haibo Jiang; Chunzhong Li

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Synthesis of silica powder with high pore volume by skeleton reinforcement

Regular | Updated：2026-01-06

- Synthesis of silica powder with high pore volume by skeleton reinforcement
- Synthesis of silica powder with high pore volume by skeleton reinforcement
- 中国化学工程学报（英文版） 2022年42卷第2期页码：219-226
- Affiliations：
  
  1. Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science & Technology,Shanghai,China,200237
  2. State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science & Technology,Shanghai,China,200237
  3. School of Materials Science and Engineering, East China University of Science & Technology,Shanghai,China,200237
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2022
- Accepted：
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Hongwei Shan, Xiaodong Zhou, Hao Jiang, 等. Synthesis of silica powder with high pore volume by skeleton reinforcement[J]. 中国化学工程学报（英文版）, 2022,42(2):219-226.

Hongwei Shan, Xiaodong Zhou, Hao Jiang, Yanjie Hu, Haibo Jiang, Chunzhong Li. Synthesis of silica powder with high pore volume by skeleton reinforcement[J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 219-226.
Hongwei Shan, Xiaodong Zhou, Hao Jiang, 等. Synthesis of silica powder with high pore volume by skeleton reinforcement[J]. 中国化学工程学报（英文版）, 2022,42(2):219-226. DOI：

Hongwei Shan, Xiaodong Zhou, Hao Jiang, Yanjie Hu, Haibo Jiang, Chunzhong Li. Synthesis of silica powder with high pore volume by skeleton reinforcement[J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 219-226. DOI：

摘要

Abstract

In this paper

a method composed of gelation of basic skeleton (first step) and skeleton reinforcement process (second step) was introduced to synthesize silica powder with high pore volume through the reaction between water glass and sulfuric acid. No organic solvents were involved in the entire preparation process and the final product was collected by spray drying. The effect of concentration of base solution

gelation point pH value and skeleton reinforcement time on the BET specific surface area and pore volume of the prepared silica powder were investigated intensively. The results show that

a basic skeleton with good dispersibility and high porosity was obtained when the concentration of base solution was 0.1 mol·L

-1

and the gelation pH value reached 6.5. Then the basic skeleton grew into a more uniform porous structure after 30 min skeleton reinforcement. Under these optimum conditions

silica powder prepared by skeleton reinforcement method had a BET specific surface area of 358.0 m

·g

-1

and its pore volume reached 2.18 cm

·g

-1

which was much higher than that of prepared by skeleton-free method (1.62 cm

·g

-1

) and by direct gelation method (0.31 cm

·g

-1

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