%0 Journal Article %A Jingdi Zheng %A Shuang Tao %A Ying Yang %A Ying Tang %T Gel–sol synthesis of hierarchical CaO using pollen as biotemplate for biodiesel production %J Comptes Rendus. Chimie %D 2024 %I Académie des sciences, Paris %Z Online first %R 10.5802/crchim.269 %G en %F CRCHIM_2024__27_S3_A5_0