fig5
![K<sup>+</sup> promoted fabrication of nanoneedle low-silicon ZSM-48 mesocrystal](https://image.oaes.cc/2c2acab4-08da-4b5d-b0f9-35b47d34a254/cs3073.fig.5.jpg)
Figure 5. (A) XRD patterns; (B) FT-IR spectrums; (C) TEM images; and (D) N2 adsorption isotherms of nanoneedle ZSM-48 zeolite at different crystallization times. XRD: X-ray diffraction; FT-IR: Fourier transform infrared; TEM: transmission electron microscope.