NiMo/Al₂O₃ Promoted Hybrid Catalysts of Nanosized Alumina and Beta Zeolite for Hydrocracking with Isomerization

Catalyst of Palladium Supported on H-Beta Zeolite with Nanosized Al₂O₃ for Isomerization of <i>n</i>-Hexane

“…Therefore, the content of ns Al2O3 should affect the reforming activity. Figure 10 shows that conversion and di-branched isoparaffin yield over Pd/ns Al2O3/H-BEA zeolite catalyst is the highest at 35 % ns Al2O3 content, resulting in the most effective reforming because the maximum of catalytic acid sites can be formed with the ns Al2O3 content of 35 % based on our previous research 22), 23) . To clarify the effect of ns Al2O3 on the zeolite component, rate constants for the catalytic activities were normalized to the relative activities by zeolite content as shown in Fig.…”

“…In our recent research on zeolite catalysts, we intentionally focused on composites containing unimodal nanoporous nano-sized (defined as 5-50 nm, and here called as ns) oxides with pore sizes ranging from about 5 nm to several tens of nanometers 19) . This research has established various advances in catalysis, including hydro desulfurization 20), 21) , hydrocracking 22), 23) , and catalytic cracking 24), 25) . We also studied the efficiency of nanoporous ns alumina matrix as a catalytic cracking catalyst, and found that ns Al2O3 as a binder have some favorable effects on the reaction.…”

“…Aci d am ount was measur ed by t he NH3-TPD method 23) . Mesoporosity was measured using nitrogen adsorption-desorption isotherms 25) .…”

Catalytic Roles of Nano-Sized Oxides Composed with Zeolite for Hydrocracking, Catalytic Cracking and Reforming

“…The catalysts were prepared typically to follow the procedures shown in the previous paper [2][3][4][5][6][7][8][9][10][11][12]. For example, ns Al 2 O 3 -BEA (beta type) zeolite catalyst and [Metal/c-Al 2 O 3 ]-ns Al 2 O 3 -BEA zeolite catalyst were synthesized by wet mixing followed by calcination.…”

“…This research has provided new advances in catalysis, including hydrodesulfurization (HDS) [2,3], HC [4][5][6][7] catalytic cracking [8][9][10] and reforming [11,12]. This report is concerned to the new investigation concept for catalytic roles of ns oxides composed with zeolite in this field.…”