Effect of mechanical treatment on properties of zeolites with chabazite structure

2nd International Conference on Rheology and Modeling of Materials

Buzimov, A.Y.^1,2 ; Kulkov, S.N.^1,2 ; Eckl, W.^3 ; Pappert, S.^3 ; Gömze, L.A.^4 ; Kurovics, E.^4 ; Kocserha, I.^4 ; Géber, R.^4

Institute of Strength Physics and Materials Science SB RAS, Tomsk, Russia^1

National Research Tomsk State University, Tomsk, Russia^2

Fraunhofer Institute for Chemical Technology ICT, Pfinztal, Germany^3

Department of Ceramics and Silicate Engineering, University of Miskolc, Miskolc, Hungary^4

关键词: Amorphous phase;    Grinding process;    Isothermal holding time;    Mechanical activation;    Mechanical treatments;    Particles sizes;    Physical chemical property;    Specific surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/790/1/012004/pdf
DOI  :  10.1088/1742-6596/790/1/012004

来源: IOP

【 摘 要 】

Zeolites are a valuable material having a wide variety of applications. We have examined the effect of mechanical activation on physical-chemical properties of commercial brands zeolite SAPO-34 and SCT-323. It has been shown that the amount of amorphous phase and the specific surface area depends on mechanical treatment. Specific surface area of the zeolites decreases strongly during the grinding process in mills. With the increase of milling time the particles size of zeolites decreased. An increase in amorphisation was observed. Specific surface area of zeolites after mechanical activation in a tumbling ball during 96 hours and annealing up to 800°C with an isothermal holding time of 1 hour does not lead to marked changes and decreases strongly after annealing at 1000°C/h. It has been shown that the milling time of ball milling is a powerful method to obtain the necessary specific surface.