10.07.2015 Views

Catalysis of Organic..

Catalysis of Organic..

Catalysis of Organic..

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Ardizzi et al. 81procedure described in (7), and having an Al/P atomic ratio equal to 0.74. Catalytictests in the gas phase have been performed in a tubular flow glass reactor. Thefollowing reaction conditions were used: (a) with the H-mordenite and AlF 3catalysts, catechol/methanol 1/10 molar ratio, residence time 0.6 s for the total feedflow, including N 2 as the carrier gas (0.1 l/min). (b) with the AlPO 4 catalyst,catechol/methanol 1/3.4 molar ratio, residence time 7.5 s.100Conversion, selectivity, %selectivity to Guaiacol806040Catechol conversion20Selectivity to Methylcatechol + Veratrol0220 230 240 250 260 270 280Temperature, °CFigure 3. Catechol conversion, selectivity to guaiacol and to methylcatechol +veratrol as functions <strong>of</strong> temperature. Catalyst Al/P/O. Feed: catechol and methanol(1/3.4 molar feed ratio).References1. P. Marion, R. Jacquot, S. Ratton and M. Guisnet, Zeolites for CleanerTechnologies, M. Guisnet and J.-P. Gilson, Eds., ICP, London, p. 281. 20022. P. Métivier, Fine Chemicals through Heterogeneous <strong>Catalysis</strong>, R.A. Sheldonand H. van Bekkum, Eds., Wiley-VCH, p. 161 and 173. 20013. M. Marczewski, J.-P. Bodibo, G. Perot and M. Guisnet, J. Mol. Catal., 50, 211(1989).4. S. Balsamà, P. Beltrame, P.L. Beltrame, P. Carniti, L. Forni and G. Zuretti,Appl. Catal., 13, 161 (1984).5. R.F. Parton, J.M. Jacobs, D.R. Huybrechts and P.A. Jacobs, Stud. Surf. Sci.Catal., 46, 163 (1989).6. F.M. Bautista, J.M. Campelo, A. Garcia, D. Luna, J.M. Marinas and A.A.Romero, Appl. Catal., 96, 175 (1993).7. F. Cavani, T. Monti, P. Panseri, B. Castelli and V. Messori, WO Pat. 74,485, toBorregaard Italia (2001).

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!