000102176 001__ 102176
000102176 005__ 20230519145442.0
000102176 0247_ $$2doi$$a10.3390/catal11030313
000102176 0248_ $$2sideral$$a124130
000102176 037__ $$aART-2021-124130
000102176 041__ $$aeng
000102176 100__ $$aRamirez-Mendoza, Heidi
000102176 245__ $$aUltrasound-Assisted Preparation of Mo/ZSM-5 Zeolite Catalyst for Non-Oxidative Methane Dehydroaromatization
000102176 260__ $$c2021
000102176 5060_ $$aAccess copy available to the general public$$fUnrestricted
000102176 5203_ $$aThe activity and selectivity of Mo/ZSM-5, benchmarking catalyst for the non-oxidative dehydroaromatization of methane, strongly depend on the cluster size, spatial distribution, and chemical environment of the Mo-based active sites. This study discloses the use of an ultrasound-assisted ion-exchange (US-IE) technique as an alternative Mo/ZSM-5 synthesis procedure in order to promote metal dispersion along the zeolite framework. For this purpose, a plate transducer (91.8 kHz) is employed to transmit the ultrasonic irradiation (US) into the ion-exchange reactor. The physico-chemical properties and catalytic activity of samples prepared under the said irradiation procedure and traditional impregnation (IWI) method are critically evaluated. Characterization results suggest that US neither affects the crystalline structure nor the particle size of the parent zeolite. However, US-IE promotes molybdenum species dispersion, avoids clustering at the external fresh zeolite surface and enhances molybdate species anchoring to the zeolite framework with respect to IWI. Despite the improved metal dispersion, the catalytic activity between catalysts synthesized by US-IE and IWI is comparable. This suggests that the sole initial dispersion enhancement does not suffice to boost the catalyst productivity and further actions such ZSM-5 support and catalyst pre-conditioning are required. Nevertheless, the successful implementation of US-IE and the resulting metal dispersion enhancement pave the way toward the application of this technique to the synthesis of other dispersed catalysts and materials of interest.
000102176 536__ $$9info:eu-repo/grantAgreement/EC/H2020/721290/EU/European Training Network for Continuous Sonication and Microwave Reactors/COSMIC$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 721290-COSMIC
000102176 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000102176 590__ $$a4.501$$b2021
000102176 592__ $$a0.728$$b2021
000102176 594__ $$a5.5$$b2021
000102176 591__ $$aCHEMISTRY, PHYSICAL$$b71 / 165 = 0.43$$c2021$$dQ2$$eT2
000102176 593__ $$aPhysical and Theoretical Chemistry$$c2021$$dQ2
000102176 593__ $$aCatalysis$$c2021$$dQ2
000102176 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000102176 700__ $$aValdez Lacinha Pereira, Mafalda
000102176 700__ $$aVan Gerven, Tom
000102176 700__ $$aLutz, Cécile
000102176 700__ $$0(orcid)0000-0003-3211-0485$$aJulian, Ignacio$$uUniversidad de Zaragoza
000102176 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000102176 773__ $$g11, 3 (2021), 313 [17 pp.]$$pCatalysts$$tCatalysts$$x2073-4344
000102176 8564_ $$s7106908$$uhttps://zaguan.unizar.es/record/102176/files/texto_completo.pdf$$yVersión publicada
000102176 8564_ $$s2772777$$uhttps://zaguan.unizar.es/record/102176/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000102176 909CO $$ooai:zaguan.unizar.es:102176$$particulos$$pdriver
000102176 951__ $$a2023-05-18-14:33:45
000102176 980__ $$aARTICLE