Synthesis, acidity and activity of zeolites SSZ-33 and SSZ-35 in transformation of aromatic hydrocarbons

PETR 9

J. Čejka, jiri.cejka@jh-inst.cas.cz1, B. Gil2, SI. Zones3, S-J. Hwang4, N. Žilková1, and M. Bejblová1. (1) J. Heyrovský Institute of Physical Chemistry, Academy of Science of the Czech Republic, CZ-182 23, Prague, Czech Republic, (2) Department of Chemistry, Jagiellonian University, PL-30 060, Krakow, Poland, (3) Chevron Energy and Technology Company, Richmond, CA 94 802, (4) The Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 92115
Toluene alkylation with isopropyl alcohol and its disproportionation and ferrocene acylation with acetic anhydride were investigated over two novel zeolites SSZ-33 and SSZ-35 and compared with other medium and large pore-zeolites (ZSM-11, ZSM-11, ZSM-12, MWW-22, MCM-58, MCM-68). The acidity of these zeolites was determined using ammonia, pyridine, pivalonitrile, and d3-acetonitrile as probe molecules studied by FTIR and was correlated with 27Al and 1H MAS NMR. In alkylation and disproportionation the catalytic data evidence the structural features of zeolites zeolites and their peculiar structure of 3D channel system of SSZ-33 and 1-D system of SSZ-35 with large internal cavities. Conversions of ferrocene and toluene in acylation reactions can be related to the size of the channels of these zeolites.
 

Zeolite Catalysis for Green Chemistry in Synthesis of Chemicals and Fuels
8:20 AM-12:00 PM, Sunday, April 6, 2008 Morial Convention Center -- Rm. 209, Oral

Division of Petroleum Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008