Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/243822
Type: Artigo de periódico
Title: Vapor-phase Catalytic Conversion Of Ethanol Into 1,3-butadiene On Cr-ba/mcm-41 Catalysts
Author: La-Salvia
N.; Lovon-Quintana
J. J.; Valenca
G. P.
Abstract: Al-MCM-41, 16%Ba/Al-MCM-41 and 1.4%Cr-16%Ba/Al-MCM-41 were used as catalysts in the vapor-phase catalytic conversion of ethanol. Physical-chemical properties of the catalysts and the effect of barium and chromium on the Al-MCM-41 activity and 1,3-butadiene yield were studied. The catalysts were characterized by X-ray diffraction (XRD), N-2 physisorption (BET method), CO2 chemisorption and Fourier transform infrared spectroscopy (FT-IR). When ethanol was completely converted on Al-MCM-41 and 16% Ba/Al-MCM-41, the reaction products showed a high selectivity for ethylene (90-98%). However, on the 1.4%Cr-16%Ba/Al-MCM-41 catalyst, a greater number of reaction products were obtained such as ethylene, acetaldehyde, diethyl ether and 1,3-butadiene. The maximum 1,3-butadiene yield obtained from ethanol reaction was 25% at 723 K and W/F-EtOH = 15 g h mol(-1). The latter result was obtained in a single step and without addition of reaction promoters (e.g., acetaldehyde, crotonaldehyde, hydrogen) in the feed stream to the reactor.
Subject: Molecular-sieves
Co2 Adsorption
Fuel Ethanol
Hydroxyapatite
Butadiene
Transformation
Mechanism
Surfaces
Olefins
Trends
Country: SAO PAULO
Editor: BRAZILIAN SOC CHEMICAL ENG
Citation: Vapor-phase Catalytic Conversion Of Ethanol Into 1,3-butadiene On Cr-ba/mcm-41 Catalysts. Brazilian Soc Chemical Eng, v. 32, p. 489-500 APR-JUN-2015.
Rights: fechado
Identifier DOI: 10.1590/0104-6632.20150322s00003039
Address: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322015000200489&lng=en&nrm=iso&tlng=en
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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