In order to investigate the effect of acid properties on the coke behavior and stability of butene aromatization, we prepared the AHZSM-5 samples with various acid properties by the methods of hydrothernial treatment and K addition. The reaction of butene aromatization was carried out at 350 degrees C and 0.5 MPa in a continuous flow fixed bed. The characterization of the fresh/coked catalysts with NH3-TPD, N-2 adsorption-desorption measurement, and TG techniques has shown that a large amount of acid sites (high acid density) of the AHZMS-5 catalyst can cause a large quantity of coke deposit and serious channel blockage, and so result in a rapid loss of aromatization activity. On the contrary, after a great reduction in strong acid sites of...
This dissertation presents the conception, synthesis, optimization and evaluation of a novel class o...
The regeneration of Y-zeolite catalysts used during the isobutane alkylation reaction is studied. Co...
Carbonaceous deposits formed during the temperature-programmed surface reaction (TPSR) of methane de...
The catalytic stability of ZSM-5 zeolite in butene aromatization was improved by the treatment of ZS...
Coke formation on n-butene cracking catalyst is the main reason for the reducing of its lifetime. To...
Coking and deactivation of HZSM-5 (Si/Al = 40) and of a 2 wt% impregnated Ga/HZSM-5 catalyst were in...
A new method to modify the acidity of zeolite was attempted to improve the activity and stability of...
The results of TPH (temperature-programmed hydrogenation), TPCO2 (temperature-programmed CO2 reactio...
An effective way (without addition of any oxidative gases to the reactant) to suppress coke formatio...
DoctorThe business circumstances surrounding petroleum industry have been going worse. The rising pr...
Propylene is one of the fastest growing petrochemicals, driven primarily by the high growth rate of ...
Coke deposited on H-gallosilicate (MFI) in the propane aromatization at different temperatures (400-...
The catalytic conversion of hydrocarbon molecules over an acidic silica-aluminum molecular sieve is ...
The transformation of olefin to aromatics over ZSM-5 catalysts with different K-loadings has been in...
The use of liquid hydrocarbons, such as FCC naphtha, having olefin components makes an adverse impac...
This dissertation presents the conception, synthesis, optimization and evaluation of a novel class o...
The regeneration of Y-zeolite catalysts used during the isobutane alkylation reaction is studied. Co...
Carbonaceous deposits formed during the temperature-programmed surface reaction (TPSR) of methane de...
The catalytic stability of ZSM-5 zeolite in butene aromatization was improved by the treatment of ZS...
Coke formation on n-butene cracking catalyst is the main reason for the reducing of its lifetime. To...
Coking and deactivation of HZSM-5 (Si/Al = 40) and of a 2 wt% impregnated Ga/HZSM-5 catalyst were in...
A new method to modify the acidity of zeolite was attempted to improve the activity and stability of...
The results of TPH (temperature-programmed hydrogenation), TPCO2 (temperature-programmed CO2 reactio...
An effective way (without addition of any oxidative gases to the reactant) to suppress coke formatio...
DoctorThe business circumstances surrounding petroleum industry have been going worse. The rising pr...
Propylene is one of the fastest growing petrochemicals, driven primarily by the high growth rate of ...
Coke deposited on H-gallosilicate (MFI) in the propane aromatization at different temperatures (400-...
The catalytic conversion of hydrocarbon molecules over an acidic silica-aluminum molecular sieve is ...
The transformation of olefin to aromatics over ZSM-5 catalysts with different K-loadings has been in...
The use of liquid hydrocarbons, such as FCC naphtha, having olefin components makes an adverse impac...
This dissertation presents the conception, synthesis, optimization and evaluation of a novel class o...
The regeneration of Y-zeolite catalysts used during the isobutane alkylation reaction is studied. Co...
Carbonaceous deposits formed during the temperature-programmed surface reaction (TPSR) of methane de...