70943 20190709135511.0 doi 10.1016/j.catcom.2017.06.022 sideral 99408 ART-2017-99408 eng (orcid)0000-0002-4678-7465 Uson, Laura In-situ preparation of ultra-small Pt nanoparticles within rod-shaped mesoporous silica particles: 3-D tomography and catalytic oxidation of n-hexane 2017 Access copy available to the general public Unrestricted The shape and porous configuration of supports are key parameters to design outstanding catalysts. However, the selection of a proper mesoporous support, such as SBA-15, by itself does not guarantee accessibility to catalytic sites. The distribution of the active phase and its stability are strongly related to the procedure used to deposit it on the catalytic substrate. Herein, we have prepared rod-shaped SBA-15 silica supports functionalized with amine groups to facilitate the electrostatic attraction and a good distribution of the resulting Pt-based catalytic nanoparticles along the pore walls. Additionally, the use of tetrakis-(hydroxymethyl)-phosphonium chloride (THPC) as both reductant and stabilizer is presented as a novel alternative for Pt nanoparticle synthesis. The behaviour of this catalyst in the total oxidation of n-hexane demonstrates high activity and excellent stability after 70 h on reaction stream. STEM-HAADF and 3-D tomography were used to confirm the presence of the metallic nanoparticles within the mesochannels and to corroborate their reduced sintering after reaction. info:eu-repo/grantAgreement/ES/MINECO/MAT2016-79776-P info:eu-repo/grantAgreement/ES/MICINN/MAT2011-24988 info:eu-repo/grantAgreement/EC/FP7/321642/EU/Development of a microfluidic platform to produce nanomaterials and assessment on new nanotechnology applications/PLATFORM2NANO info:eu-repo/grantAgreement/EC/FP7/312483/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM 2 info:eu-repo/grantAgreement/EC/FP7/294094/EU/Synthesis and characterization of NANOstructured materials with LumInescent properties for diaGnostic and tHerapeuTic applications/NANOLIGHT info:eu-repo/grantAgreement/EUR/ERC/HECTOR-267626 info:eu-repo/grantAgreement/ES/DGA/E26 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 3.463 2017 CHEMISTRY, PHYSICAL 56 / 146 = 0.384 2017 Q2 T2 0.929 2017 Chemistry (miscellaneous) 2017 Q1 Process Chemistry and Technology 2017 Q1 Catalysis 2017 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-4546-4111 Hueso, José L. (orcid)0000-0002-6873-5244 Sebastian, Víctor Universidad de Zaragoza (orcid)0000-0002-2071-9093 Arenal, Raul Universidad de Zaragoza Florea, Ileana (orcid)0000-0002-2966-9088 Irusta, Silvia Universidad de Zaragoza (orcid)0000-0003-3165-0156 Arruebo, Manuel Universidad de Zaragoza (orcid)0000-0002-8701-9745 Santamaria, Jesús Universidad de Zaragoza 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 100 (2017), 93-97 [17 p.] Catal. Commun. CATALYSIS COMMUNICATIONS 1566-7367 1013982 http://zaguan.unizar.es/record/70943/files/texto_completo.pdf Postprint 62683 http://zaguan.unizar.es/record/70943/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:70943 articulos driver 2019-07-09-11:51:47 ARTICLE