06/00611 Microwave-assisted zeolite synthesis from coal fly ash in hydrothermal process

2006 ◽  
Vol 47 (2) ◽  
pp. 94
2016 ◽  
Vol 8 (2) ◽  
pp. 165
Author(s):  
Upita Septiani ◽  
Widya Yuliani Fatiha ◽  
Syukri Arief

Zeolite synthesis using Ombilin coal fly ash at low temperature with alkaline hydrothermal process has been carried out. The used Fly ash was melted by NaOH at a temperature of 550°C. Alkaline hydrothermal processes in zeolite synthesis performed with variations of temperature at 35°C , 45°C and 60°C . The zeolite that obtained was characterized by using Fourier Transform Infra Red (FT - IR), X - Ray Diffraction (XRD) , Scanning Electron Microscopy (SEM) in combination with EDX . The characterization results showed the formation of zeolite were better when an increasing in temperature processes and the use of sea water as a solvent. On the use of seawater, were obtained sodalit zeolite with the chemical formula Na8(Al6Si6O24)Cl2.


2008 ◽  
Vol 19 (1) ◽  
pp. 83-94 ◽  
Author(s):  
Hidekazu Tanaka ◽  
Atsushi Fujii ◽  
Satoshi Fujimoto ◽  
Yoshiki Tanaka

2021 ◽  
Vol 323 ◽  
pp. 129174
Author(s):  
Pengxu Cao ◽  
Guanghui Li ◽  
Hao Jiang ◽  
Xin Zhang ◽  
Jun Luo ◽  
...  

2018 ◽  
Vol 21 (3) ◽  
pp. 469-477 ◽  
Author(s):  
Qili Qiu ◽  
Xuguang Jiang ◽  
Guojun Lv ◽  
Zhiliang Chen ◽  
Shengyong Lu ◽  
...  

RSC Advances ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 2416-2427 ◽  
Author(s):  
Boitumelo Makgabutlane ◽  
Lebea N. Nthunya ◽  
Nicholas Musyoka ◽  
Bongumusa S. Dladla ◽  
Edward N. Nxumalo ◽  
...  

Zeolites synthesized from biomass waste materials offer a great opportunity in the sustainable utilization of the waste.


2018 ◽  
Vol 29 (3) ◽  
pp. 450-456 ◽  
Author(s):  
Tomonori Fukasawa ◽  
Akira Horigome ◽  
Achmad Dwitama Karisma ◽  
Norio Maeda ◽  
An-Ni Huang ◽  
...  

2002 ◽  
Vol 77 (3) ◽  
pp. 280-286 ◽  
Author(s):  
Norihiro Murayama ◽  
Hideki Yamamoto ◽  
Junji Shibata

2003 ◽  
Vol 68 (6) ◽  
pp. 471-478 ◽  
Author(s):  
Dusica Vucinic ◽  
Igor Miljanovic ◽  
Aleksandra Rosic ◽  
Predrag Lazic

Coal fly ash was modified to zeolitic materials by hydrothermal treatment at 90 ?C. The zeolite synthesis was studied as a function of the mole ratio of Na2O/SiO2 in the reaction mixtures. The results showed that NaP1 zeolite is obtained when the Na2O/SiO2 mole ratio was 0.7. Hydroxysodalite is the dominant zeolite phase in modified fly ash treated with a higher Na2O concentration solution (Na2O/SiO2 = 1.3). The IR and XRD methods were used to determine the phases present in the starting sample and in the zeolitic materials.


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