Mechanism of TAME and TAEE synthesis from diffuse-reflectance FTIR analysis

Date

2005-02-28

Author

Boz, N
Doğu, Timur
Murtezaoglu, K
Dogu, G

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

210
views

0
downloads

Diffuse-reflectance FTIR results obtained with tert-amyl-methyl-ether (TAME), ethanol, methanol, i-amylenes and mixtures of i-amylenes with alcohols supported a Langmuir-Hinshelwood type reaction mechanism involving adsorbed i-amylene molecules, which form a bridged structure between the adsorbed alcohols and the -SO3H sites of Amberlyst-15. Number of available sites involved in the adsorption of i-olefins is drastically decreased with an increase in alcohol concentration. The reaction rate model, which was proposed basing on the DRIFTS results, was shown to give good agreement with the published initial rate data for TAEE synthesis. The rate of tert-amyl-ethyl-ether (TAEE) formation was found to give a rather sharp maximum at an ethanol activity smaller than 0.1.

Subject Keywords

General Chemistry, Catalysis

URI

https://hdl.handle.net/11511/62951

Journal

CATALYSIS TODAY

DOI

https://doi.org/10.1016/j.cattod.2004.09.074

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

The C-11-radioisotopic study of methanol conversion on V-MCM-41: The influence of methyl iodide on the transformation Sarkadi-Priboczki, E.; Gucbilmez, Y.; Solmaz, A.; Balci, S.; Szelecsenyi, F.; Kovacs, Z.; Doğu, Timur (Elsevier BV, 2009-04-30) The methanol conversion and a feasible methanol co-reaction with methyl iodide were studied on a vanadium incorporated MCM-41 type (V-MCM-41) mesoporous catalyst. which was prepared by a direct hydrothermal synthesis method. Adsorption/desorption as well as conversion derivates of radioactive methanol were easily followed by radioactivity detectors on V-MCM-41. The transformation and coreaction products were analyzed by a gas chromatograph equipped with Radio/FID detectors. The radiodetector was applied to ...
A novel integrated process for the functionalization of methane and ethane: bromine as mediator Lorkovic, IM; Yılmaz, Ayşen; Yilmaz, GA; Zhou, XP; Laverman, LE; Sun, SL; Schaefer, DJ; Weiss, M; Noy, ML; Cutler, CI; Sherman, JH; McFarland, EW; Stucky, GD; Ford, PC (Elsevier BV, 2004-11-24) We describe a novel, integrated multi-step process for the partial oxidation of alkanes to alcohols, ethers or olefins using O-2 as oxidant. The sequential transformations are (1) alkane bromination to alkyl bromide(s) and HBr, (2) reaction of this mixture with solid metal oxide (MO) to neutralize the HBr and to generate oxygenated products or olefins plus solid metal bromide, and (3) oxidation of the spent solid with 02 to regenerate the metal oxide and Br-2 for reuse.
Selective oxidation of propylene to propylene oxide using combinatorial methodologies Miyazaki, T; Ozturk, S; Onal, I; Senkan, S (Elsevier BV, 2003-06-30) Direct oxidation of propylene by oxygen to propylene oxide (PO) has been studied through the application of the techniques of combinatorial catalysis. Catalytic materials containing single and binary metal components were prepared by impregnating standard gamma-Al2O3 pellets. In the first stage, 34 single component catalytic materials at three different metal loading levels were prepared and screened for PO activity and selectivity using array channel microreactors and mass spectrometry. Experiments were co...
Novel BODIPY-subphthalocyanine dyads with reasonable photodynamic therapy behaviours Kazan, Hasan Huseyin; Ozcan, Emrah; ÇOŞUT, BÜNYEMİN; YENİLMEZ ÇİFTÇİ, GÖNÜL; TANRIVERDİ EÇİK, Esra (Royal Society of Chemistry (RSC), 2020-08-01) In this study, a set of bio-compatible and NIR emissive BODIPY-subphthalocyanine dyads (SP-DBD1-3) that contain amphiphilic triethyleneglycol units supporting partial water solubility and red absorbing BODIPY monomers (DBD1-3) were prepared. The photophysical and photochemical activities of these monomers, including fluorescence behaviors, singlet oxygen production, absorption, and emission profiles were investigated. The effect of the presence of halogen atoms and the BODIPY unit in dyads on the ability of...
Catalytic enantioselective addition of diethylzinc to aldehydes using aziridine based chiral ligands BULUT, Adnan; ASLAN, Ayhan; İZGÜ, Enver Cagri; Doğan, Özdemir (Elsevier BV, 2007-05-16) The readily available ferrocenyl substituted aziridinylmethanol 1 (FAM-1) was used as a chiral catalyst in the diethylzinc addition reaction to aromatic and aliphatic aldehydes to give secondary alcohols in high yields and up to 99% enantiomeric excess at room temperature. The catalyst can be recovered and used without losing its activity.

Citation Formats

N. Boz, T. Doğu, K. Murtezaoglu, and G. Dogu, “Mechanism of TAME and TAEE synthesis from diffuse-reflectance FTIR analysis,” CATALYSIS TODAY, pp. 419–424, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62951.