@article{walton_cavalcante jr._levan_2006,  title={Adsorption of light alkanes on coconut nanoporous activated carbon},  volume={23},  ISSN={0104-6632},  url={https://doi.org/10.1590/S0104-66322006000400013},  DOI={10.1590/S0104-66322006000400013},  number={4},  journal={Brazilian Journal of Chemical Engineering},  publisher={Brazilian Society of Chemical Engineering},  author={Walton, K. S. and Cavalcante Jr., C. L. and LeVan, M. Douglas},  year={2006},  month={Oct},  pages={555–561} }