Infrared investigations of the alkylation of toluene with methanol by alkali-modified zeolites

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · Industrial and Engineering Chemistry Research; (United States)

OSTI ID:5677411

Mielczarski, E; Davis, M E ^[1]

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1. Dept. of Chemical Engineering, Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (US)

This paper reports on the infrared spectra of zeolite NaX, ion-exchanged CsNaX, and cesium acetate impregnated CsNaY (CsAce/CsNaY) exposed to methanol and toluene at batch and continuous flow conditions over the temperature range 200-420{degrees} C that have been recorded in situ in order to investigate the types of adsorbed species that may exist on these catalysts during side-chain alkylation of toluene with methanol to form styrene. The results from all three materials indicate that methanol and toluene adsorb at different sites within the zeolite. Zeolites with no acidity (CsAce/CsNaY) do not show the presence of formaldehyde. These data and those from the authors' previous catalytic experiments on side-chain alkylation are used to speculate on new catalyst designs necessary for further rate/selectivity enhancements over existing technology.

• OSTI ID: 5677411
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 29:8; ISSN 0888-5885; ISSN IECRE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020500 -- Petroleum-- Products & By-Products
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
400201 -- Chemical & Physicochemical Properties
ADSORPTION
ALCOHOLS
ALKYLATED AROMATICS
ALKYLATION
AROMATICS
CATALYSTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DESIGN
HYDROCARBONS
HYDROXY COMPOUNDS
INFRARED SPECTRA
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MATERIALS
METHANOL
MINERALS
ORGANIC COMPOUNDS
PRODUCTION
REACTION KINETICS
SILICATE MINERALS
SORPTION
SPECTRA
STYRENE
TOLUENE
ZEOLITES