INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
NaA zeolite membranes on modified porous stainless steel supports: A comparative study of different SiO2 sources
Autor/es:
ANA M. TARDITI; LAURA CORNAGLIA; MARTÍNEZ GALEANO, YOHANA
Revista:
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
Editorial:
BRAZILIAN SOC CHEMICAL ENG
Referencias:
Lugar: BRASIL; Año: 2019
ISSN:
0104-6632
Resumen:
The effect of the silica source onNaA zeolite crystallinity and morphology was studied using two synthesisroutes: concentrated gel and clear solution. The optimized synthesis conditionswere applied for the synthesis of NaA zeolite layers on top of porous stainlesssteel disks or on the outer surface of tubular supports. SEM and XRDmeasurements confirmed that the use of rice husk allowed obtaining defect free andpure phase NaA zeolite membrane. Selectivity values similar to that publishedfor NaA zeolite membranes based in ceramic substrates were obtained usingzeolite layers deposited on porous stainless steel tubes. From the curvefitting of the experimental data, the contribution of zeolitic and non-zeoliticflux was estimated. For the membranes synthesized from a concentrated gel, H2 showed apredominated contribution of the zeolitic flux.
