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GeBu4reacts at 250°C with the external silanols of two different mordenites (Si/Al = 11 or 40) to give the surface organometallic complex SiOGeBu31 which has been characterized by13C CP-MAS NMR; 1 is able to discriminate sterically different alkanes such as n-hexane, 2-methyl-pentane, 2,3-dimethyl butane, 2,2,4-trimethyl pentane. Such discrimination is parallel to that already observed for SiOSnBu3grafted on the same mordenites. Interestingly and in contrast to the behaviour of the grafted tin complex, 1 even after treatment at 400°C is still able to separate n-hexane from isooctane, a property ascribed to a steric molecular control of the Ge(Bu)3fragment which has an exceptional thermal stability. © 1994.




Nédez, C., Choplin, A., Corker, J., Basset, J. M., Joly, J. F., & Benazzi, E. (1994, September 13). Surface organometallic chemistry on zeolites: control of the pore opening of mordenite by grafting of thermally stable GeBu3fragments. Journal of Molecular Catalysis. https://doi.org/10.1016/0304-5102(94)00087-5

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