@inproceedings{8aa45fc7ddb34a848a15793b51d1defa,
title = "H2-D2 exchange and migration of Ga in H-ZSM5 and H-MOR zeolites",
abstract = "Trimethylgallium (TMGa) was loaded by chem. vapor deposition (CVD) on two different zeolites, H-ZSM5 and H-MOR. The interaction of TMGa on zeolite acid sites and the effect of redn. and oxidn. treatments were characterized by ICP, XPS, FT-IR and 71Ga NMR. The capacity of dissociatively adsorption of H2 and D2 and the resultant HD desorption was analyzed by H2-D2 exchange reaction. The oxidn. and specially the redn. treatment provoke the migration and redistribution thought zeolite crystals. FT-IR results show that TMGa reacts with both silanol and sterically accessible Bronsted acid sites. 71Ga NMR spectra show that Ga is presents in two different geometries: octahedral and Ga compensating the neg. charged Al from the framework zeolite structure. Hydrogen pretreatment of both zeolites has a pos. effect on the distribution of Ga. However, Ga species obtained were less active for H2-D2 exchange than the Ga species obtained after oxidn.",
author = "{Garcia Sanchez}, M. and P.C.M.M. Magusin and E.J.M. Hensen and {Santen, van}, R.A.",
year = "2002",
doi = "10.1016/S0167-2991(02)80124-0",
language = "English",
isbn = "0-444-51174-1",
series = "Studies in Surface Science and Catalysis",
publisher = "Elsevier",
pages = "959--966",
editor = "R. Aiello and F. Testo and G. Giordano",
booktitle = "Impact of zeolites and other porous materials on the new technologies at the beginning of the new millennium : proceedings of the 2nd International FEZA (Federation of the European Zeolite Associations) conference, Taormina, Italy, September 1 - 5, 2002",
address = "Netherlands",
note = "conference; International FEZA conference ; 2 (Taormina) : 2002.09.01-05; 2002-09-01; 2002-09-05 ; Conference date: 01-09-2002 Through 05-09-2002",
}