Fig. 3: MALDI FT-ICR mass spectra of the liberated carbonaceous deposits. | Nature Communications

Fig. 3: MALDI FT-ICR mass spectra of the liberated carbonaceous deposits.

From: Molecular elucidating of an unusual growth mechanism for polycyclic aromatic hydrocarbons in confined space

Fig. 3

The mass spectra of the liberated carbonaceous deposits obtained from the used up-layer SAPO-34 catalysts by HF dissolution-CCl4 extraction after MTO reaction with WHSV of 4 h−1 at 475 °C for 30 min (a), at 475 °C for different durations (5–130 min) (b), at different temperatures (350–475 °C) (c). d The mass spectra of the liberated carbonaceous deposits obtained from the used bottom-layer catalysts after MTO reaction at 475 °C for different durations (5–130 min).

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