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уважаемые коллеги, помогите пожалуйста раздобыть статьи:

1. F. Collignon and G. Poncelet
Journal of Catalysis Volume 202, Issue 1, 15 August 2001, Pages 68-77
"Comparative Vapor Phase Synthesis of ETBE from ethanol and isobutene ..... "

http://dx.doi.org/10.1006/jcat.2001.3280

2. Shangwei Hu, Ronald J. Willey, and Bruno Notari
Journal of Catalysis Volume 220, Issue 1, 15 November 2003, Pages 240-248
" An investigation on the catalytic properties of titania–silica materials"

http://dx.doi.org/10.1016/S0021-9517(03)00294-X

3. Xingtao Gao and Israel E. Wachs
Catalysis Today Volume 51, Issue 2, 30 June 1999, Pages 233-254
"Titania–silica as catalysts: molecular structural characteristics ... "

http://dx.doi.org/10.1016/S0920-5861(99)00048-6


4. Robert R., Rajamohanan P. R., Hegde S. G., Chandwadkar A. J. and Ratnasamy P.
Journal of Catalysis Volume 155, Issue 2, 1 September 1995, Pages 345-352
"NMR Spectroscopic Study of the Interaction of 1-Butene with ... "

http://dx.doi.org/10.1006/jcat.1995.1216

5. Mark A. Harmer, and Qun Sun
Applied Catalysis A: General Volume 221, Issues 1-2, 30 November 2001, Pages 45-62
"Solid acid catalysis using ion-exchange resins "

http://dx.doi.org/10.1016/S0926-860X(01)00794-3


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