The changes in the support morphology, at nano- and micro-scale level, have been investigated along the two-step processes involved in the preparation of a Pd supported on SiO2-Al2O3 (SA) catalyst: Pd deposition and K2CO3 doping. During the latter step part of the support dissolves and re-precipitates (partially outside the pores) covering the Pd particles. XRPD shows a significant rearrangement of the support at the long range order scale, while 29Si and 27Al solid-state (SS) NMR indicate that the average local environment around both Si and Al atoms remains unaltered.

Pd supported catalysts: evolution of the support during Pd deposition and K doping

R. Pellegrini;AGOSTINI, Giovanni;GROPPO, Elena Clara;CHIEROTTI, Michele Remo;GOBETTO, Roberto;LAMBERTI, Carlo
2010-01-01

Abstract

The changes in the support morphology, at nano- and micro-scale level, have been investigated along the two-step processes involved in the preparation of a Pd supported on SiO2-Al2O3 (SA) catalyst: Pd deposition and K2CO3 doping. During the latter step part of the support dissolves and re-precipitates (partially outside the pores) covering the Pd particles. XRPD shows a significant rearrangement of the support at the long range order scale, while 29Si and 27Al solid-state (SS) NMR indicate that the average local environment around both Si and Al atoms remains unaltered.
10th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts
Louvain-la-Neuve; Belgium
11-15 July 2010
175
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http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B8GYB-50GK094-2W&_user=525216&_coverDate=12%2F31%2F2010&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1642900705&_rerunOrigin=google&_acct=C000026382&_version=1&_urlVersion=0&_userid=525216&md5=41aa279370bf4cd225ef83fe4f97fdc1&searchtype=a
catalyst preparation; Pd/SiO2-Al2O3; K-doping; solid-state NMR; XRPD
R. Pellegrini; G. Leofanti; G. Agostini; E. Groppo; M. R. Chierotti; R. Gobetto;C. Lamberti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/87295
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