Zeolite LTA/carbon membranes for air separation

Total oxidation of naphthalene using palladium nanoparticles supported on BETA, ZSM-5, SAPO-5 and alumina powders

“…As can be extracted from the TEM micrographs of the colloid, the synthesised colloid shows very low polidispersity for the size of the particles. From the different images of the different catalysts prepared for this work, the deposition of polymer-protected nanoparticles results in a noticeable change in Pd particle size, which agrees with our previous studies [22][23][24]. Therefore, TEM micrographs show an effect on the size of the particles during catalyst preparation, as the mean particle size slightly increases from the starting colloid to the final catalyst.…”

“…The catalysts used in this work were prepared by the impregnation method, as reported previously by our group [22][23][24]. In a typical procedure, 3 g of support was mixed with the appropriate amount of the purified colloidal suspension to yield 1 wt.…”

“…Focusing on Pd nanoparticles, Teranishi et al [20] dealt with the fundamental aspects of monometallic palladium nanoparticles, their synthesis and structural control, and the system has played an important role as a catalyst in numerous organic reactions. Within this field, unsupported Pd based nanoparticles have been used successfully in our group in the semi-hydrogenation of phenylacetylene [21] or supported on carbon [22] or inorganic materials [23]. Recently, Pd nanoparticles supported on γ-alumina have been successfully used in the PrOx reaction [24], indicating the benefits of using PVP polymer protected Pd nanoparticles instead of Pd catalysts prepared by classical methods such as impregnation with a Pd compound and further reduction in hydrogen atmosphere.…”

Titania–silver and alumina–silver composite nanoparticles: Novel, versatile synthesis, reaction mechanism and potential antimicrobial application

“…Numerous reports describe the synthesis of such composite materials, with particular emphasis on immobilization of noble metal nanoparticles on oxides such as SiO 2 [1][2][3], TiO 2 [4][5][6][7][8][9][10] and Al 2 O 3 [11][12][13][14][15][16]. These oxides are of interest due to their ready availability, ease of handling, low toxicity and low cost.…”

“…Ni [11], Pt [12], Pd [13], Ru [14] and CuO [16] are among the numerous species that have been studied to produce Al 2 O 3 -based catalysts. As an excellent adsorbent, TiO 2 also enjoys a vast range of potential applications in photocatalysis [4][5][6], photovoltaics [7,8] and water splitting [9], either in its pristine form or as a composite with a variety of nanoparticles.…”