michaelmd

• Li, Zheng; Benz, Michael; Rieg, Carolin; Dittmann, Daniel; Beurer, Ann-Katrin & Haussermann, Dorothea [Show all 8 contributors for this article] (2021). The alumination mechanism of porous silica materials and properties of derived ion exchangers and acid catalysts. Materials Chemistry Frontiers. ISSN 2052-1537. 5(11), p. 4254–4271. doi: 10.1039/d1qm00282a.
• Pappas, Dimitrios; Kvande, Karoline; Kalyva, Maria Evangelou; Dyballa, Michael Martin; Lomachenko, Kirill A. & Arstad, Bjørnar [Show all 11 contributors for this article] (2020). Influence of Cu-speciation in mordenite on direct methane to methanol conversion: Multi-Technique characterization and comparison with NH3 selective catalytic reduction of NOx. Catalysis Today. ISSN 0920-5861. p. 1–7. doi: 10.1016/j.cattod.2020.06.050. Full text in Research Archive
• Kvande, Karoline; Pappas, Dimitrios; Dyballa, Michael Martin; Buono, Carlo; Signorile, Matteo & Borfecchia, Elisa [Show all 13 contributors for this article] (2020). Comparing the Nature of Active Sites in Cu-loaded SAPO-34 and SSZ-13 for the Direct Conversion of Methane to Methanol. Catalysts. ISSN 2073-4344. 10(191). doi: 10.3390/catal10020191. Full text in Research Archive
• Lomachenko, Kirill A.; Martini, A; Pappas, Dimitrios; Negri, Chiara; Dyballa, Michael Martin & Berlier, Gloria [Show all 12 contributors for this article] (2019). The impact of reaction conditions and material composition on the stepwise methane to methanol conversion over Cu-MOR: An operando XAS study. Catalysis Today. ISSN 0920-5861. 336, p. 99–108. doi: 10.1016/j.cattod.2019.01.040.
• Dyballa, Michael Martin; Thorshaug, Knut; Pappas, Dimitrios; Borfecchia, Elisa; Kvande, Karoline & Bordiga, Silvia [Show all 12 contributors for this article] (2019). Zeolite surface methoxy groups as key intermediates in the stepwise conversion of methane to methanol. ChemCatChem. ISSN 1867-3880. 11(20), p. 5022–5026. doi: 10.1002/cctc.201901315. Full text in Research Archive Show summary

  This contribution clarifies the overoxidation-preventing key step in the methane-to-methanol (MTM) conversion over copper mordenite zeolites. We followed the methane-to-methanol conversion over copper mordenite zeolites by NMR spectroscopy supported by DRIFTS to show that surface methoxy groups (SMGs) located at zeolite Brønsted sites are the key intermediates. The SMGs with chemical shift of 59 ppm are identical to those formed on a copper-free reference zeolite after reaction with methanol and react with water, methanol, or carbon monoxide to yield methanol, dimethyl ether, and acetate. This reactivity corroborates the location of SMGs at Brønsted sites. We find no evidence for stable SMGs directly at copper sites and explain mechanistically why H-form mordenites outperform their Na-form analogues. This finding is of interest for any future process that tries to trap the intermediate methane oxidation product towards methanol.

• Holzinger, Julian; Nielsen, Malte; Beato, Pablo; Brogaard, Rasmus Yding; Buono, Carlo & Dyballa, Michael Martin [Show all 9 contributors for this article] (2019). Identification of Distinct Framework Aluminum Sites in Zeolite ZSM-23: A Combined Computational and Experimental 27Al NMR Study. Journal of Physical Chemistry C. ISSN 1932-7447. 123(13), p. 7831–7844. doi: 10.1021/acs.jpcc.8b06891.
• Brogaard, Rasmus Yding; Kømurcu, Mustafa; Dyballa, Michael Martin; Botan, Alexandru; Van Speybroeck, Veronique & Olsbye, Unni [Show all 7 contributors for this article] (2019). Ethene Dimerization on Zeolite-Hosted Ni Ions: Reversible Mobilization of the Active Site. ACS Catalysis. ISSN 2155-5435. 9(6), p. 5645–5650. doi: 10.1021/acscatal.9b00721.
• Pappas, Dimitrios; Borfecchia, Elisa; Lomachenko, Kirill A.; Lazzarini, Andrea; Gutterød, Emil Sebastian & Dyballa, Michael Martin [Show all 14 contributors for this article] (2019). Cu-Exchanged Ferrierite Zeolite for the Direct CH4 to CH3OH Conversion: Insights on Cu Speciation from X-Ray Absorption Spectroscopy. Topics in catalysis. ISSN 1022-5528. 62(7-11). doi: 10.1007/s11244-019-01160-7.
• Dyballa, Michael Martin; Pappas, Dimitrios; Kvande, Karoline; Borfecchia, Elisa; Arstad, Bjørnar & Beato, Pablo [Show all 8 contributors for this article] (2019). On how copper mordenite properties govern the framework stability and activity in the methane-to-methanol conversion. ACS Catalysis. ISSN 2155-5435. 9(1), p. 365–375. doi: 10.1021/acscatal.8b04437.
• Borfecchia, Elisa; Pappas, Dimitrios; Dyballa, Michael Martin; Lomachenko, Kirill A.; Negri, Chiara & Signorile, Matteo [Show all 7 contributors for this article] (2018). Evolution of active sites during selective oxidation of methane to methanol over Cu-CHA and Cu-MOR zeolites as monitored by operando XAS. Catalysis Today. ISSN 0920-5861. doi: 10.1016/j.cattod.2018.07.028.
• Pappas, Dimitrios; Borfecchia, Elisa; Dyballa, Michael Martin; Lomachenko, Kirill A.; Martini, Andrea & Berlier, Gloria [Show all 12 contributors for this article] (2018). Understanding and optimizing the performance of Cu‐FER for the direct CH4 to CH3OH conversion. ChemCatChem. ISSN 1867-3880. 11(1), p. 621–627. doi: 10.1002/cctc.201801542. Full text in Research Archive
• Pappas, Dimitrios; Martini, Andrea; Dyballa, Michael Martin; Kvande, Karoline; Teketel, Shewangizaw & Lomachenko, Kirill A. [Show all 16 contributors for this article] (2018). The nuclearity of the active site for methane to methanol conversion in Cu-mordenite: a quantitative assessment. Journal of the American Chemical Society. ISSN 0002-7863. 140(45), p. 15270–15278. doi: 10.1021/jacs.8b08071. Full text in Research Archive
• Dyballa, Michael Martin; Pappas, Dimitrios; Borfecchia, Elisa; Beato, Pablo; Olsbye, Unni & Lillerud, Karl Petter [Show all 8 contributors for this article] (2018). Tuning the material and catalytic properties of SUZ-4 zeolites for the conversion of methanol or methane. Microporous and Mesoporous Materials. ISSN 1387-1811. 265, p. 112–122. doi: 10.1016/j.micromeso.2018.02.004. Full text in Research Archive
• Rojo-Gama, Daniel; Nielsen, Malte; Wragg, David; Dyballa, Michael Martin; Holzinger, Julian & Falsig, Hanne [Show all 12 contributors for this article] (2017). A Straightforward Descriptor for the Deactivation of Zeolite Catalyst H-ZSM-5. ACS Catalysis. ISSN 2155-5435. 7(12), p. 8235–8246. doi: 10.1021/acscatal.7b02193. Full text in Research Archive
• Pappas, Dimitrios; Borfecchia, Elisa; Dyballa, Michael Martin; Pankin, Ilia A.; Lomachenko, Kirill A. & Martini, Andrea [Show all 16 contributors for this article] (2017). Methane to methanol: structure-activity relationships for Cu-CHA. Journal of the American Chemical Society. ISSN 0002-7863. 139(42), p. 14961–14975. doi: 10.1021/jacs.7b06472. Full text in Research Archive

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• Arstad, Bjørnar; Dyballa, Michael Martin; Thorshaug, Knut; Pappas, Dimitrios K; Borfecchia, Elisa & Kvande, Karoline [Show all 12 contributors for this article] (2020). Solid State NMR studies of the stepwise transformation of methane to methanol over Cu-Zeolites.
• Dyballa, Michael Martin; Pappas, Dimitrios; Borfecchia, Elisa; Kvande, Karoline; Bordiga, Silvia & Berlier, Gloria [Show all 11 contributors for this article] (2019). Cu-MOR applied in the stepwise methane-to-methanol conversion.
• Pappas, Dimitrios; Borfecchia, Elisa; Dyballa, Michael Martin; Berlier, Gloria; Bordiga, Silvia & Olsbye, Unni [Show all 8 contributors for this article] (2018). FOLLOWING O2-ACTIVATION OF CU-ZEOLITES WITH TIME-RESOLVED XAS.
• Pappas, Dimitrios; Borfecchia, Elisa; Dyballa, Michael Martin; Martini, Andrea; Lomachenko, Kirill A. & Berlier, Gloria [Show all 11 contributors for this article] (2018). Methane to Methanol over Cu-Zeolites: Establishing Structure-Activity Relationships.
• Pappas, Dimitrios; Borfecchia, Elisa; Dyballa, Michael Martin; Pankin, Ilia A.; Lomachenko, Kirill A. & Martini, Andrea [Show all 16 contributors for this article] (2017). XAS reveals structure-activity relationships for the Methane-to-Methanol conversion over Cu-zeolites. ESRF Highlights of the Year. p. 49–51.
• Pappas, Dimitrios; Borfecchia, Elisa; Dyballa, Michael Martin; Lomachenko, Kirill A.; Signorile, Matteo & Berlier, Gloria [Show all 12 contributors for this article] (2017). Searching for the Active Sites Responsible for the CH4 to CH3OH Conversion over Cu-Chabazite Materials.
• Berlier, Gloria; Borfecchia, Elisa; Negri, C; Bordiga, Silvia; Beato, Pablo & Lomachenko, Kirill A. [Show all 12 contributors for this article] (2017). Comparing small and large pore Cu-zeolites for the partial oxidation of methane to methanol: an operando spectroscopic study.
• Dyballa, Michael Martin; Arstad, Bjørnar; Pappas, Dimitrios; Svelle, Stian; Olsbye, Unni & Beato, Pablo [Show all 8 contributors for this article] (2017). On the preparation of Cu-containing Zeolites - How to avoid comparing Apples to Oranges.
• Pappas, Dimitrios; Borfecchia, Elisa; Dyballa, Michael Martin; Pankin, Ilia; Lomachenko, Kirill A. & Berlier, Gloria [Show all 12 contributors for this article] (2017). Key Reaction Steps in the Partial Oxidation of Methane to Methanol over Cu-SSZ-13.
• Kvande, Karoline; Svelle, Stian; Dyballa, Michael Martin & Pappas, Dimitrios (2019). A Study of Cu-loaded SAPO-34 for the Direct Conversion of Methane to Methanol. Universitetet i Oslo.

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