Sintesis ZSM-5 dari coal fly ash (CFA) dengan sumber silika penambah yang berasal dari abu sekam padi: pengaruh rasio SiO2/Al2O3 terhadap kristalinitas produk

Azlia Metta (Jurusan Teknik Kimia Universitas Lampung, Jl. Prof. Dr. Soemantri Brojonegoro No.1 Bandar Lampung 35145)
Simparmin Br Ginting (Jurusan Teknik Kimia Universitas Lampung, Jl. Prof. Dr. Soemantri Brojonegoro No.1 Bandar Lampung 35145)
Hens Saputra (Pusat Teknologi Industri Proses - TIRBR, Badan Pengkajian dan Penerapan Teknologi Gedung Teknologi 2 Lt.3 PUSPIPTEK Tangerang Selatan)

Jurnal Rekayasa Proses
Vol 8 No 2 (2014): Volume 8, Number 2, 2014

Coal Fly Ash and rice husk ash can be utilized by converting it into ZSM-5 synthetic zeolite. One of the influencing factors of ZSM-5 synthetis is ratio of SiO2/Al2O3. Synthesis of ZSM-5 was carried out in an autoclave at a temperature of 180°C with a variation of the ratio of SiO2/Al2O3, namely 20, 30, 40, 50 and 60 mol/mol during 24 hour crystallization using TPABr template. Characterization of ZSM-5 was conducted using X-ray Diffraction, Scanning Electron Microscopy, Adsorption-Desorption Analysis of Nitrogen and Acidity. The results showed that the ZSM-5 was formed in all the variations of SiO2/Al2O3 ratios with the highest percent crystallinity of 52.83%, at the ratio of 50 mol/mol. All products are still in accompany with the formation of side products such as Analsime and Silica Oxide. The ZSM-5 crystal product was in hexagonal shape. Results from Adsorption-Desorption Analysis of Nitrogen indicated that all products were mesoporous materials.