EFECTO DEL TRATAMIENTO TÉRMICO E HIDROTÉRMICO SOBRE LA ACTIVIDAD CATALÍTICA DE ZEOLITAS MFI INTERCAMBIADAS CON NÍQUEL PARA LA TRANSFORMACIÓN DE ETILENO

Autor:	L. García, M.I. Brikgi, C.M. López, Agustín Galán García
Rok vydání:	2019
Předmět:	inorganic chemicals Ethylene General Chemical Engineering chemistry.chemical_element Thermal treatment Catalysis Metal chemistry.chemical_compound Nickel chemistry visual_art visual_art.visual_art_medium Zeolite Selectivity Nuclear chemistry Space velocity
Zdroj:	Revista Mexicana de Ingeniería Química. 18:289-301
ISSN:	2395-8472 1665-2738
DOI:	10.24275/uam/izt/dcbi/revmexingquim/2019v18n1/lopez
Popis:	A synthesized and protonated MFI zeolite was modified by thermal and hydrothermal treatment and exchanged with nickel. The catalysts were characterized by different techniques and evaluated for the ethylene transformation at atmospheric pressure, 400 °C and space velocity equal to 7 h-1. The products were analyzed by gas chromatography, determining the conversion of ethylene (Xethylene) and product selectivity, consisting of paraffins, isomers, olefins, naphthenes and aromatics (PIONA). All zeolites without metal, showed good catalytic stability. The thermal and hydrothermal treatments carried out modify the textural properties of the solids. Nickel incorporation modifies ethylene conversion and catalyst stability. The effect of nickel on the PIONA selectivity depends on the treatment performed on the zeolite used as support. The combination of the treatments and the incorporation of nickel increase the selectivity towards C3 and C4 olefins.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4b5cf4aeb33000640a67b9e6f5f40325 https://doi.org/10.24275/uam/izt/dcbi/revmexingquim/2019v18n1/lopez Zobrazit plný text záznamu