fig14
![Fundamentals of the catalytic conversion of methanol to hydrocarbons](https://image.oaes.cc/80c4750a-8400-4d4a-87e7-63e8ae26b64a/5293.fig.14.jpg)
Figure 14. The formation of coke species with molecular masses (A) less than 200 Da and (B) greater than 200 Da under various conditions. (C) Operando UV-Raman spectra of a coked ZEOS specimen during steam treatment. (D) Micropore volume and coke mass of a ZEOS specimen over time during steam treatment. Reproduced with permission from ref. 146[146]. Copyright 2021, Nature Publishing Group.