[1A08-15] International sess.(1)

1:00 PM - 1:15 PM JST(4:00 AM - 4:15 AM UTC)English

[1A08] Continuous production of bio-based phenol from cashew agricultural waste through zeolite-catalyzed dealkylation

○Jan Wiesfeld¹, Keisuke Iriba¹, Yu Yamaguchi¹, Ryota Osuga¹, Satoshi Suganuma¹, Emiel J.M. Hensen², Kiyotaka Nakajima¹ (1. Hokkaido University, 2. Eindhoven University of Technology, The Netherlands)

Keywords:

Phenol,Olefins,Zeolite catalysis

Hydrocardanol (3-Pentadecylphenol), a hydrogenated form of cashew nutshell waste derived cardanol, was converted to phenol via zeolite-catalyzed trans-alkylation under batch conditions using toluene as alkyl acceptor. The pentadecyl chain was fragmented into short (C2-C5) fragments by zeolite catalysis, which were removed as alkyltoluenes as intended. However, these fragments were also able to alkylate the accumulating phenol to form undesired alkylphenols, and oligomerized to form significant levels of coke. Under flow conditions, however, a stoichiometric phenol yield was maintained for 6 hours. In this case, the formed alkyl fragments could be recovered as valuable paraffins and olefins.