Extended Data Fig. 2: Conversion and selectivity of zoned and homogeneous zeolite catalysts.
From: Elemental zoning enhances mass transport in zeolite catalysts for methanol to hydrocarbons
a, Conversion of methanol and dimethyl ether as a function of time-on-stream for the Al-zoned sample A-4 (blue cross), homogeneous samples H1-3 (purple circles) and H2-6 (purple triangles), and Si-zoned samples S1-1 (red squares), S2-1 (red inverted triangles), and S3-2 (red diamonds). All reactions were performed at 350 °C using a space velocity of 0.18–0.30 mol MeOH mol−1 H+ s−1. b, Selectivity profile (left y-axis) at sub-100% conversion (initial data point after 20 min induction period) and the ratio of ethene to the sum of 2-methylbutane and 2-methylbutene (symbols, right y-axis).
