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Title: In situ FTIR studies of methanol and dimethyl ether in ZSM-5

Abstract

In situ infrared spectra are reported of methanol and dimethyl ether in H-ZSM-5 and Na-ZSM-5. Methanol reacts with internal acidic hydroxyl groups at 523 K to form a methoxy species, the appearance of which correlated with the onset of hydrocarbon formation. Dimethyl ether is protonated is lower temperatures but forms the same methoxy species at 473 K. The methoxy species methylates benzene and alkenes at 523 K. The implications of these observations for the mechanism of hydrocarbon formation are discussed.

Authors:
;
Publication Date:
Research Org.:
Univ. of Auckland, New Zealand
OSTI Identifier:
6043212
Resource Type:
Journal Article
Journal Name:
J. Am. Chem. Soc.; (United States)
Additional Journal Information:
Journal Volume: 109:17
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 10 SYNTHETIC FUELS; DME; CHEMICAL REACTIONS; HYDROCARBONS; CHEMICAL PREPARATION; METHANOL; ZEOLITES; CATALYTIC EFFECTS; CATALYSTS; EXPERIMENTAL DATA; HIGH TEMPERATURE; HYDROXYL RADICALS; INFRARED SPECTRA; METHOXY RADICALS; ALCOHOLS; ALKOXY RADICALS; DATA; ETHERS; HYDROXY COMPOUNDS; INFORMATION; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; MATERIALS; MINERALS; NUMERICAL DATA; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; RADICALS; SPECTRA; SYNTHESIS; 400201* - Chemical & Physicochemical Properties; 090121 - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989); 090210 - Alcohol Fuels- Properties- (1976-1989)

Citation Formats

Forester, T R, and Howe, R F. In situ FTIR studies of methanol and dimethyl ether in ZSM-5. United States: N. p., 1987. Web. doi:10.1021/ja00251a004.
Forester, T R, & Howe, R F. In situ FTIR studies of methanol and dimethyl ether in ZSM-5. United States. https://doi.org/10.1021/ja00251a004
Forester, T R, and Howe, R F. 1987. "In situ FTIR studies of methanol and dimethyl ether in ZSM-5". United States. https://doi.org/10.1021/ja00251a004.
@article{osti_6043212,
title = {In situ FTIR studies of methanol and dimethyl ether in ZSM-5},
author = {Forester, T R and Howe, R F},
abstractNote = {In situ infrared spectra are reported of methanol and dimethyl ether in H-ZSM-5 and Na-ZSM-5. Methanol reacts with internal acidic hydroxyl groups at 523 K to form a methoxy species, the appearance of which correlated with the onset of hydrocarbon formation. Dimethyl ether is protonated is lower temperatures but forms the same methoxy species at 473 K. The methoxy species methylates benzene and alkenes at 523 K. The implications of these observations for the mechanism of hydrocarbon formation are discussed.},
doi = {10.1021/ja00251a004},
url = {https://www.osti.gov/biblio/6043212}, journal = {J. Am. Chem. Soc.; (United States)},
number = ,
volume = 109:17,
place = {United States},
year = {Wed Aug 19 00:00:00 EDT 1987},
month = {Wed Aug 19 00:00:00 EDT 1987}
}