The Effect of Various Acids to the Gelation Process to the Silica Gel Characteristic Using Organic Silica

International Conference on Chemistry and Material Science 2017

化学;材料科学

Rahman, N.A.^1 ; Widiyastuti, W.^2 ; Sigit, D.^3 ; Ajiza, M.^4 ; Sujana, W.^4

Dept. of Chemical Engineering, National Institute of Technology Malang, Indonesia^1

Dept. of Chemical Engineering, Sepuluh Nopember Institute of Technology Surabaya, Indonesia^2

Dept. of Chemistry, Malang State University, Malang, Indonesia^3

Dept. of Geodetic Engineering, National Institute of Technology Malang, Indonesia^4

关键词: Acid concentrations;    Diffusion process;    Effect of acids;    Gel characteristics;    Gelation process;    Pores structure;    Sodium silicate solutions;    Tartaric acids;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012049/pdf
DOI  :  10.1088/1757-899X/299/1/012049

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Bagasse ash is solid waste of cane sugar industry which contain of silica more than 51%. Some previous study of silica gel from bagasse ash have been conducted often and been applied. This study concerns about the effect of various acid used in the process of gelation to the characteristic of silica gel produced. Then, this silica gel will be used as adsorbent. As that, the silica gel must fulfill the requirements of adsorbent, as have good pores characteristics, fit in mesoporous size so that adsorbent diffusion process is not disturbed. A fitted pores size of silica gel can be prepared by managing acid concentration used. The effect of acid, organic acid (tartaric acid) and inorganic acid (hydrochloric acid), is investigated in detail. The acid is added into sodium silicate solution in that the gel is formed, the pores structures can be investigated with BET, the crystal form is analyzed with XRD and the pore structure is analyzed visually with SEM. By managing the acid concentration added, it gets the effect of acid to the pore structure of silica gel. The bigger concentration is, the bigger the pore's size of silica gel produced.