The influence of Si/Al ratio on the distribution of OH groups in zeolites with MWW topology

The influence of Si/Al ratio on the distribution of ...

punktacja MNiSW [2010 A]: 32

title:	The influence of Si/Al ratio on the distribution of OH groups in zeolites with MWW topology
author:	Gil Barbara , Marszałek Bartosz , Micek-Ilnicka Anna, Olejniczak Zbigniew
Journal title:	Topics in Catalysis
Title of volume:	Challenges in zeolite synthesis and catalysis : a tribute to Sigmund Csicsery and Herman van Bekkum
volume:	53
issue:	19-20
date of publication:	2010
pages:	1340-1348
ISSN:	1022-5528
eISSN:	1572-9028
DOI:	10.1007/s11244-010-9592-7
URL:	https://link.springer.com/content/pdf/10.1007%2Fs11244-010-9592-7.pdf
date accessed:	2019-05-13
notes:	Bibliogr. s. 1347-1348.
language:	English
Journal language:	English
abstract in english:	A series of MWW-type zeolites of increasing Si/Al ratio were investigated with respect to their acidic properties. Concentration of the Brønsted acid centers located at the external crystal surface was invariant for the entire series. Ethanol conversion to ethyl-tert-butyl ether, proceeding only at the external surface, was also constant. The OH groups in MWW zeolites were found to be homogeneous with proton affinity value equal to 1142.7 kJ/mol.
keywords in english:	MWW zeolites, ETBE synthesis, external surface acidity, IR and NMR studies
affiliation:	Wydział Chemii : Zakład Chemii Nieorganicznej
type:	journal article
subtype:	academic paper