【正】NaY zeolite was modified through dealumination with oxalic acid,and the HY zeolite was obtained by calcination of the modified NaY zeolite.The zeolite mol
<正>The LY-C2-02 catalyst for C2 post hydrotreating developedby Lanzhou Petrochemical Research Institute (LPRI) has beensuccessfully applied in the C2 hydrogena