@article{saceda_leon_rintramee_prayoonpokarach_wittayakun_2011,  title={Properties of silica from rice husk and rice husk ash and their utilization for zeolite y synthesis},  volume={34},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422011000800018},  DOI={10.1590/S0100-40422011000800018},  number={8},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Saceda, Jan-Jezreel F. and Leon, Rizalinda L. de and Rintramee, Kamolwan and Prayoonpokarach, Sanchai and Wittayakun, Jatuporn},  year={2011},  pages={1394–1397} }