Sb. Wang et al., Performance of metal-oxide-promoted LiCl/sulfated-zirconia catalysts in the ethane oxidative dehydrogenation into ethene, CATAL LETT, 62(2-4), 1999, pp. 191-195
The effects of some transition- and lanthanide-metal oxides in LiCl/sulfate
d-zirconia (SZ) catalysts on catalytic behavior in the oxidative dehydrogen
ation of ethane were investigated. It is found that modification of LiCl/SZ
by metal oxides significantly improves the catalytic activity and ethene y
ield. Among those additives, Ni and Nd oxides show the best promoting effec
t in terms of ethane conversion and ethene yield. 93% ethane conversion wit
h 83% selectivity to ethene has been achieved over the Nd2O3-LiCl/SZ cataly
st at 650(degrees)C. In addition, those oxide-promoted LiCl/SZ catalysts ar
e also found to exhibit a longer stability in catalytic performance. Metal-
oxide additives change the chemical structure and surface redox properties,
which accounts for the enhancement of activity.