Open AccessCatalytic Pyrolysis of Naphtha on SHS Catalysts
Author(s) -
Galina Xanthopoulou,
George Vekinis
Publication year - 2009
Publication title -
eurasian chemico-technological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 9
eISSN - 2522-4867
pISSN - 1562-3920
DOI - 10.18321/ectj21
Subject(s) - naphtha , catalysis , coke , pyrolysis , spinel , yield (engineering) , ethylene , chemistry , nuclear chemistry , materials science , metallurgy , organic chemistry
High yield of light olefins by catalytic pyrolysis of naphtha on spinel-based catalysts is reported. The yields of ethylene and propylene reach over 50% and are at least 10% and 5% higher respectively than the yield using thermal Pyrolysis, under the same process conditions. The partial substitution of Mg by Co in MgAl 2 O 4 and the incorporation of Al 2 O 3 , SiO 2 , MgO, H 3 BO 3 in the spinel and SHS synthesis of KVO 3 all increase the catalytic conversion efficiency while at the same time they suppress substantially the formation of coke. It was found that SHS-KVO 3 catalytically accelerates the gasification of coke deposited on the catalyst surface and its optimum values were found to be more than 10 wt.%. The addition of B 2 O 3 into the KVO 3 -based catalyst causes a strong interaction between KVO 3 and SHS support, which decreases the loss by evaporation of the active phase