TY - JOUR
T1 - Alkylation of toluene over basic catalysts - Key requirements for side chain alkylation
AU - Palomares, A. E.
AU - Eder-Mirth, G.
AU - Rep, M.
AU - Lercher, J. A.
PY - 1998
Y1 - 1998
N2 - In situ infrared spectroscopy was used to study sorption and reaction of toluene and methanol over various basic catalysts (MgO, hydrotalcites, and basic zeolites). The size of the metal cations controls the preference of sorbing methanol or toluene; i.e., the larger the metal cation, the higher the preference for toluene. The key requirements for a good catalyst for side-chain alkylation are (i) sufficient base strength to dehydrogenate methanol to formaldehyde, (ii) stabilization of sorbed toluene and polarization of its methyl group, and (iii) balanced sorption stoichiometry of the two reactants. The formation of the carbon-carbon bond mechanistically resembles an aldol condensation.
AB - In situ infrared spectroscopy was used to study sorption and reaction of toluene and methanol over various basic catalysts (MgO, hydrotalcites, and basic zeolites). The size of the metal cations controls the preference of sorbing methanol or toluene; i.e., the larger the metal cation, the higher the preference for toluene. The key requirements for a good catalyst for side-chain alkylation are (i) sufficient base strength to dehydrogenate methanol to formaldehyde, (ii) stabilization of sorbed toluene and polarization of its methyl group, and (iii) balanced sorption stoichiometry of the two reactants. The formation of the carbon-carbon bond mechanistically resembles an aldol condensation.
UR - http://www.scopus.com/inward/record.url?scp=0001774813&partnerID=8YFLogxK
U2 - 10.1006/jcat.1998.2253
DO - 10.1006/jcat.1998.2253
M3 - Article
AN - SCOPUS:0001774813
SN - 0021-9517
VL - 180
SP - 56
EP - 65
JO - Journal of Catalysis
JF - Journal of Catalysis
IS - 1
M1 - CA982253
ER -