THE ROLE OF CL- IN A LI+-ZNO-CL- CATALYST ON THE OXIDATIVE COUPLING OF METHANE AND THE OXIDATIVE DEHYDROGENATION OF ETHANE Academic Article uri icon

abstract

  • The effect of Cl ion addition to a Li+ZnO catalyst has been studied with respect to the oxidative coupling of CH4 and the oxidative dehydrogenation (OXD) of C2H6. Increasing the Cl/Li ratio from 0.65 to 0.90 had relatively little effect on the CH4 conversion, whereas the C2H4/C2H6 ratio was enhanced significantly as a result of an increase in the OXD reaction rate. Conversely, loss of Cl from the catalyst during the reaction had a much more deleterious effect on ethane OXD activity than on methane coupling activity. Addition of Cl ions at a Cl/Li ratio of 0.9 caused a decrease both in the number of basic sites and in the basic strength of these sites, as determined by temperatureprogrammed desorption of CO2. The similarities between the results obtained over Li+ZnOCl catalysts and those previously reported for Li+MgOCl catalysts confirm that basicity of the host oxide plays only a minor role in determining the properties of these chlorided catalysts. Copyright 1995 VCH Verlagsgesellschaft mbH

published proceedings

  • CHEMICAL ENGINEERING & TECHNOLOGY

author list (cited authors)

  • WANG, D. J., ROSYNEK, M. P., & LUNSFORD, J. H.

citation count

  • 9

complete list of authors

  • WANG, DJ||ROSYNEK, MP||LUNSFORD, JH

publication date

  • January 1995

publisher