Science Advances

Supplementary Materials

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  • Supplementary Text
  • fig. S1. CH4 conversion and C2-C3 selectivity for the pure supports and the supported Mn2O3-Na2WO4 catalysts.
  • fig. S2. SEM and EDX mapping images.
  • fig. S3. XRD patterns and testing results of the 2.7Mn2O3-5.0Na2WO4/Ti-MWW and 2.7Mn2O3-5.0Na2WO4/TS-1 catalysts under different reaction conditions.
  • fig. S4. XRD patterns and testing results for various samples with different Si:Ti molar ratio (or Ti content).
  • fig. S5. XPS spectra of various samples.
  • fig. S6. Raman spectra of various samples.
  • fig. S7. Testing results of the catalysts with different active components.
  • fig. S8. Ea calculations.
  • fig. S9. Testing results of the catalysts with different active components prepared by the grinding method.
  • fig. S10. H2-TPR profiles and XRD patterns.
  • fig. S11. Effects of Mn2O3 plus TiO2, and Na2WO4 loadings on the OCM performance for the Mn2O3-TiO2-Na2WO4/SiO2 catalyst.
  • fig. S12. Stability testing of the 6.2Mn2O3-6.3TiO2-10Na2WO4/SiO2 catalyst.
  • fig. S13. Testing results and XRD patterns for the 6.2Mn2O3-6.3TiO2-10Na2WO4/SiO2 catalyst under different reaction conditions.
  • table S1. Detailed treatment history of some catalysts for XRD and Raman measurements.
  • table S2. Specific surface areas and real contents of Mn, W, Na, and Ti of all used catalysts.
  • table S3. Surface contents of W, Mn, Na, Ti, Si, O, and C measured by XPS for the used catalysts.
  • table S4. CH4 conversion and C2-C3 selectivity over representative catalysts.
  • References (38–49)

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