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2003 / 2002
 

 

A. Buchholz, W. Wang, A. Arnold, M. Xu, M. Hunger,
Successive steps of hydration and dehydration of silicoaluminophosphates H-SAPO-34 and H-SAPO-37 investigated by in situ CF MAS NMR spectroscopy, Microporous Mesoporous Mater. 57 2003 157-168.


W. Wang, A. Buchholz, A. Arnold, M. Xu, M. Hunger,
Effect of surface methoxy groups on the 27Al quadrupole parameters of framework aluminum atoms in calcined zeolite H-Y, Chem. Phys. Lett. 370 (2003) 88-93.


 M. Xu, W. Wang, M. Hunger,
Formation of acetone enol on acidic zeolite ZSM-5 evidenced by H/D exchange, Chem. Commun. 2003 722-723.


W. Wang, M. Xu, A. Buchholz, A. Arnold, M. Hunger,
Time-resolved observation of the decomposition process of N,N,N-trimethylanilinium cations on zeolite H-Y by in situ stopped-flow 13C MAS NMR spectroscopy, Magn. Reson. Imaging 21 2003 329-332.


M. Seiler, W. Wang, A. Buchholz, M. Hunger,
Direct evidence for the catalytically active role of the hydrocarbon pool formed on zeolite H-ZSM-5 during the methanol to olefin conversion, Catal. Lett. 88 2003 187-191.


 A. Arnold, S. Steuernagel, M. Hunger, J. Weitkamp,
Insight into the dry-gel synthesis of gallium-rich zeolite [Ga]Beta, Microporous Mesoporous Mater. 62 2003 97-106.


 W. Wang, A. Buchholz, I.I. Ivanova, J. Weitkamp, M. Hunger,
Synthesis and immobilization of quaternary ammonium cations in acidic zeolites, Chem. Commun. 2003 2600-2601.


W. Wang, A. Buchholz, M. Seiler, M. Hunger,
Evidence for an initiation of the MTO process by reactive surface methoxy groups on acidic zeolite catalysts, J. Am. Chem. Soc. 125 2003 15260-15267.


I.I. Ivanova, O.A. Ponomoreva, A.I. Rebrov, W. Wang, M. Hunger, J. Weitkamp,
Mechanism of aniline methylation on zeolite catalysts investigated by in situ 13C MAS NMR, Kinetics and Catalysis 44(5) 2003 701-709.


W. Wang, M. Seiler, I.I. Ivanova, U. Sternberg, J. Weitkamp, M. Hunger,
Formation and decomposition of N,N,N-trimethylanilinium cations on zeolite H-Y investigated by in situ stopped-flow (SF) MAS NMR spectroscopy, J. Am. Chem. Soc. 124 2002 7548-7554.


M. Xu, W. Wang, M. Seiler, A. Buchholz, M. Hunger,
Improved Broensted acidity of mesoporous [Al]MCM-41 material treated with ammonium fluoride, J. Phys. Chem. B 106 2002 3202-3208.


I.I. Ivanova, O.A. Ponomoreva, E.B. Pomakhina, E.E. Knyazeva, V.V. Yuschenko, M. Hunger, J. Weitkamp,
Aniline methylation on modified zeolites with acidic, basic and redox properties, Stud. Surf. Sci. Catal. 142 2002 659-666.


M. Xu, A. Arnold, A. Buchholz, W. Wang, M. Hunger,
Low-temperature modification of mesoporous MCM-41 material with sublimated aluminum chloride in vacuum, J. Phys. Chem. B 106 2002 12140-12143.


R.A. Rakoczy, M. Breuninger, M. Hunger, Y. Traa, J. Weitkamp,
Template-free synthesis of zeolite Ferrierite and characterization of its acid sites, Chem. Eng. Technol. 25 2002 273-275.


A. Buchholz, W. Wang, M. Xu, A. Arnold, M. Hunger,
Thermal stability and dehydroxylation of Broensted acid sites in silicoaluminophosphates H-SAPO-11, H-SAPO-18, H-SAPO-31, and H-SAPO-34 investigated by multi-nuclear solid-state NMR spectroscopy, Microporous Mesoporous Mater. 56 2002 267-278.

 

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