Synthesis of cyclopentadiene trimer (tricyclopentadiene) over zeolites and Al-MCM-41: The effects of pore size and acidity

Catalytic isomerization and oligomerization of endo-dicyclopentadiene using alkali-treated hierarchical porous HZSM-5

“…5) and is different from the case of isomerization where Z5-70-0.5-1.0 is the most active. The isomerization and oligomerization mechanism is very complicated, it seems that both Lewis and Brönsted acids can catalyze the reaction (Nelson and Kuo 1975;Zou et al, 2012;Han et al, 2009;Kwak et al, 2014). Therefore the amount of accessible acid sites is very important for the isomerization and oligomerization reactions, and more mesopores can promote the oligomerization process.…”

Effective catalytic ozonation for oxalic acid degradation with bimetallic Fe‐Cu‐MCM‐41: operation parameters and mechanism

“…9 -12 However, pure siliceous materials are non-reactive owing to their lack of acidity and reaction active sites. 13,14 Therefore, certain metal modifications are needed. Noble metals (Pd or Pt) and transition metals (Mn, Co, Ni) are frequently supported on activated carbon, -Al 2 O 3 and zeolites, in order to improve their activity in the catalytic ozonation process.…”

“…Among the catalysts employed, mesoporous siliceous materials, for their large surface area and ordered structure, have attracted extensive attention . However, pure siliceous materials are non‐reactive owing to their lack of acidity and reaction active sites . Therefore, certain metal modifications are needed.…”

Effect of modification on Pd dispersion, acidity, sulfur resistance and catalysis of Pd/Al-MCM-41 zeolite

“…The sample (0.05 g) was weighed in a porcelain dish and then covered with a thin layer of WO 3 . After delivering the sample to the device, a coulomb titration procedure was performed prior to obtaining the mass percentage data.…”