Synthesis of phthalic and maleic anhydrides from n-pentane. 1. Kinetic analysis of the reaction network

Centi, Gabriele; Lopez Nieto, J.; Pinelli, D.; Trifiro, F.

doi:10.1021/ie00088a004

The kinetics of n-pentane oxidn. over a (VO)2P2O7 catalyst is described by a Langmuir-Hinshelwood mechanism: four parallel reactions leading to maleic anhydride, phthalic anhydride, CO, and CO2; and two consecutive reactions for the formation of C oxides from the two anhydrides. The rate-detg. step is a surface reaction between one adsorbed n-pentane mol. and one O mol., indicating that the reaction leading to C-C bond formation in phthalic anhydride synthesis occurs after the rate-detg. step. Phthalic anhydride selectivity is higher for the lower reaction temps. and n-pentane or O concns. The relevance of the kinetic information with regard to the anal. of the mechanism for the formation of the C8 anhydride from the C5 alkane is also discussed. [on SciFinder(R)]

Titolo:	Synthesis of phthalic and maleic anhydrides from n-pentane. 1. Kinetic analysis of the reaction network
Autori:	CENTI, Gabriele J. Lopez Nieto D. Pinelli F. Trifiro mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	1989
Rivista:	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Abstract:	The kinetics of n-pentane oxidn. over a (VO)2P2O7 catalyst is described by a Langmuir-Hinshelwood mechanism: four parallel reactions leading to maleic anhydride, phthalic anhydride, CO, and CO2; and two consecutive reactions for the formation of C oxides from the two anhydrides. The rate-detg. step is a surface reaction between one adsorbed n-pentane mol. and one O mol., indicating that the reaction leading to C-C bond formation in phthalic anhydride synthesis occurs after the rate-detg. step. Phthalic anhydride selectivity is higher for the lower reaction temps. and n-pentane or O concns. The relevance of the kinetic information with regard to the anal. of the mechanism for the formation of the C8 anhydride from the C5 alkane is also discussed. [on SciFinder(R)]
Handle:	http://hdl.handle.net/11570/1907342
Appare nelle tipologie:	14.a.1 Articolo su rivista

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