fig3
Figure 3. Methanol conversion and product selectivity with the time on stream for MTO over L-ZSM-11 (A); M-ZSM-11 (B); and S-ZSM-11 (C) zeolites; the coke content (D); micropore surface area (E); and micropore volume (F) as a function of time on stream in MTO over these three samples. The reactions were performed at 0.1 MPa, 450 °C, and methanol WHSV of 3.8 h-1.
