Abstract: A new method of sol–gel polymer template synthesis of mesoporous catalytic thin films has been proposed which allows controlling the chemical nature of the film, the porosity, thickness and loading with an active species. The mesoporous films with a long-order structure can be obtained in a narrow range of surfactant-to-metal precursor molar ratios from 0.006 to 0.009. The catalytic film thickness was varied from 300 to 1000 nm while providing a uniform catalyst distribution with a desired catalyst loading (1 wt. % Au nanoparticles) throughout the film. The films were characterized by TEM, SEM, ethanol adsorption and contact angle measurements. The calcination of the as-synthesized films at 573 K reduced Ti4+ sites to Ti3+. A 300 nm thick Au-containing film showed an initial TOF of 1.4 s−1 and a selectivity towards unsaturated alcohols as high as 90% in the hydrogenation of citral. Thicker films demonstrated a high selectivity towards the saturated aldehyde (above 55%) and a lower intrinsic catalytic activity (initial TOF of 0.7–0.9 s−1) in the absence of internal diffusion limitations.

Cite: Protasova L.N. , Rebrov E.V. , Glazneva T.S. , Berenguer-Murcia A. , Ismagilov Z.R. , Schouten J.C.
Control of the Thickness of Mesoporous Titania Films for Application in Multiphase Catalytic Microreactors
Journal of Catalysis. 2010. V.271. N2. P.161-169. DOI: 10.1016/j.jcat.2009.07.013 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	May 14, 2009
Accepted:	Jul 27, 2009
Published online:	Mar 7, 2010
Published print:	May 4, 2010

Identifiers:

Web of science:	WOS:000278240500002
Scopus:	2-s2.0-77951118956
Elibrary:	15315462
Chemical Abstracts:	2010:519081
Chemical Abstracts (print):	153:90981
OpenAlex:	W2071177362

Citing:

DB	Citing
Web of science	40
Scopus	40
Elibrary	45
OpenAlex	42

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