TY - CHAP
T1 - Formation of methylamines by the reaction of ammonia with surface methoxy species on zeolite H-Y and the silicoaluminophosphate H-SAPO-34
AU - Jiang, Y.
AU - Huang, J.
AU - Wang, W.
AU - Hunger, M.
PY - 2007
Y1 - 2007
N2 - In the present work, the amination of surface methoxy species formed by methanol on acidic zeolite H-Y and the silicoaluminophosphate H-SAPO-34 was studied and it was found that these methoxy groups are reactive compounds in amination reactions already at room temperature. The above-mentioned reaction was investigated for different molar ammonia to methoxy ratios (N/C) and at various reaction temperatures by 13C MAS NMR spectroscopy. By a subsequent thermal treatment, it was evidenced that the selectivities towards monomethylamine, dimethylamine, and trimethylamine strongly depend on the reaction temperature. Moreover, due to the different pore architectures of the catalysts under study, H-SAPO-34 has the higher selectivity towards mono- and dimethylamine in comparison with zeolite H-Y. This finding may be an indication that the silicoaluminophosphate H-SAPO-34 is a selective amination catalyst with the additional ability to change the contents of monomethylamine, dimethylamine, and trimethylamine by varying the reaction temperature.
AB - In the present work, the amination of surface methoxy species formed by methanol on acidic zeolite H-Y and the silicoaluminophosphate H-SAPO-34 was studied and it was found that these methoxy groups are reactive compounds in amination reactions already at room temperature. The above-mentioned reaction was investigated for different molar ammonia to methoxy ratios (N/C) and at various reaction temperatures by 13C MAS NMR spectroscopy. By a subsequent thermal treatment, it was evidenced that the selectivities towards monomethylamine, dimethylamine, and trimethylamine strongly depend on the reaction temperature. Moreover, due to the different pore architectures of the catalysts under study, H-SAPO-34 has the higher selectivity towards mono- and dimethylamine in comparison with zeolite H-Y. This finding may be an indication that the silicoaluminophosphate H-SAPO-34 is a selective amination catalyst with the additional ability to change the contents of monomethylamine, dimethylamine, and trimethylamine by varying the reaction temperature.
UR - http://www.scopus.com/inward/record.url?scp=35348926275&partnerID=8YFLogxK
U2 - 10.1016/S0167-2991(07)80996-7
DO - 10.1016/S0167-2991(07)80996-7
M3 - Chapter
AN - SCOPUS:35348926275
SN - 0444530681
SN - 9780444530684
SN - 9780444531865
SN - 9780444531858
VL - 170
T3 - Studies in Surface Science and Catalysis
SP - 1331
EP - 1337
BT - From zeolites to porous MOF materials
A2 - Xu, Ruren
A2 - , Zi Gao
A2 - Chen, Jiesheng
A2 - Yan, Wenfu
PB - Elsevier
CY - Amsterdam; Oxford
ER -