000086347 001__ 86347 000086347 005__ 20230914083241.0 000086347 0247_ $$2doi$$a10.3390/app9194075 000086347 0248_ $$2sideral$$a114931 000086347 037__ $$aART-2019-114931 000086347 041__ $$aeng 000086347 100__ $$aGioria, Esteban 000086347 245__ $$aGreen synthesis of a Cu/SiO2 catalyst for efficient H2-SCR of NO 000086347 260__ $$c2019 000086347 5060_ $$aAccess copy available to the general public$$fUnrestricted 000086347 5203_ $$aIn this work, the synthesis of Cu/SiO2 catalysts starting frompre-formed copper nanoparticle (CuNP) colloidal suspensions was carried out. Two different protocols for the CuNP synthesis were tested: (i) a green approach using water as solvent and ascorbic acid as reducer and stabilizing agent, and (ii) a second solvothermal method involving the use of diethylene glycol as solvent, sodium hypophosphite (NaH2PO2) as reducer, and polyvinylpyrrolidone (PVP) and cetyltrimethylammonium bromide (CTAB) as stabilizing agents. In addition, and for the sake of comparison, a third catalyst was prepared by solid state conventional grinding of CuO with SiO2. The catalysts were tested in the environmentally relevant catalytic reduction of NOX with H2, in a temperature range from 300 to 500 °C. The catalysts were characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR) cycles, Raman spectroscopy, and N2 adsorption for specific surface BET measurements. From these techniques CuO and Cu(0) species were detected depending on the synthesis protocol. CuNP size and size distribution in the colloid suspensions were determined by transmission electronic microscopy (TEM). The catalyst prepared from the aqueous suspension (CuAsc/SiO2) exhibited higher NO conversion (100%) and selectivity (85%) toward N2 at the lower reaction evaluated temperature (300 °C). The CuCTAB/SiO2 catalyst obtained by the solvothermal approach showed activity at high reaction temperature (400 °C) preferentially. The metal-support mechanical mixture exhibited a negligible response at low temperature and low conversion (68%) and selectivity (88%) at 500 °C. Nanoparticle size and distribution on the support, together with the metal-support interaction, were postulated as the most plausible parameters governing the catalytic performance of the different Cu/SiO2 materials. 000086347 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/PRI-PIBAR-2011-1366$$9info:eu-repo/grantAgreement/EUR/ERC/HECTOR-267626$$9info:eu-repo/grantAgreement/ES/UZ-DGA/T57-17R-P 000086347 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/ 000086347 590__ $$a2.474$$b2019 000086347 591__ $$aPHYSICS, APPLIED$$b62 / 154 = 0.403$$c2019$$dQ2$$eT2 000086347 591__ $$aENGINEERING, MULTIDISCIPLINARY$$b32 / 91 = 0.352$$c2019$$dQ2$$eT2 000086347 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b88 / 176 = 0.5$$c2019$$dQ2$$eT2 000086347 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b161 / 314 = 0.513$$c2019$$dQ3$$eT2 000086347 592__ $$a0.418$$b2019 000086347 593__ $$aEngineering (miscellaneous)$$c2019$$dQ1 000086347 593__ $$aFluid Flow and Transfer Processes$$c2019$$dQ2 000086347 593__ $$aProcess Chemistry and Technology$$c2019$$dQ2 000086347 593__ $$aInstrumentation$$c2019$$dQ2 000086347 593__ $$aMaterials Science (miscellaneous)$$c2019$$dQ2 000086347 593__ $$aComputer Science Applications$$c2019$$dQ3 000086347 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000086347 700__ $$aMarchesini, F. Albana 000086347 700__ $$aSoldati, Analia 000086347 700__ $$aGiorello, Antonella 000086347 700__ $$0(orcid)0000-0002-4546-4111$$aHueso, José L. 000086347 700__ $$aGutiérrez, Laura 000086347 773__ $$g9, 19 (2019), 4075 [17 pp.]$$pAppl. sci.$$tApplied Sciences (Switzerland)$$x2076-3417 000086347 8564_ $$s1579048$$uhttps://zaguan.unizar.es/record/86347/files/texto_completo.pdf$$yVersión publicada 000086347 8564_ $$s101696$$uhttps://zaguan.unizar.es/record/86347/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000086347 909CO $$ooai:zaguan.unizar.es:86347$$particulos$$pdriver 000086347 951__ $$a2023-09-13-10:48:26 000086347 980__ $$aARTICLE