TY - JOUR
T1 - Combustion kinetics of the coke on deactivated dehydrogenation catalysts
AU - Luo, Sha
AU - He, Songbo
AU - Li, XianRu
AU - Li, Jingqiu
AU - Bi, Wenjun
AU - Sun, Chenglin
PY - 2015
Y1 - 2015
N2 - The coke combustion kinetics on the deactivated catalysts for long chain paraffin dehydrogenation was studied by the thermogravimetry and differential thermogravimetry (TG–DTG) technique. The amount and H/C mole ratio of the coke were determined by the TG and elemental analysis. And the comprehensive coke combustion model and catalytic combustion mechanism were also proposed. The results showed that three types of coke existed, which were located on the metal sites (C1) and the support sites surrounding (C2) and far from Pt (C3), respectively. The reaction order with respect to carbon was 1, 1/3 and 3/4, and to oxygen was 0, 1/2 and 3/4, respectively for the coke C1, C2 and C3. Moreover, the corresponding activation energy was 31, 107 and 127 kJ/mol, respectively
AB - The coke combustion kinetics on the deactivated catalysts for long chain paraffin dehydrogenation was studied by the thermogravimetry and differential thermogravimetry (TG–DTG) technique. The amount and H/C mole ratio of the coke were determined by the TG and elemental analysis. And the comprehensive coke combustion model and catalytic combustion mechanism were also proposed. The results showed that three types of coke existed, which were located on the metal sites (C1) and the support sites surrounding (C2) and far from Pt (C3), respectively. The reaction order with respect to carbon was 1, 1/3 and 3/4, and to oxygen was 0, 1/2 and 3/4, respectively for the coke C1, C2 and C3. Moreover, the corresponding activation energy was 31, 107 and 127 kJ/mol, respectively
KW - n/a OA procedure
U2 - 10.1016/j.fuproc.2014.09.002
DO - 10.1016/j.fuproc.2014.09.002
M3 - Article
SN - 0378-3820
VL - 129
SP - 156
EP - 161
JO - Fuel processing technology
JF - Fuel processing technology
ER -