Effect of the paste molding pressure on the activity of iron oxide catalyst in dehydrogenation of methylbutenes

Shaping of Sulfated Zirconia Catalysts by Extrusion: Understanding the Role of Binders

“…68−70 This deviation can be a consequence of disturbances in the particles' order caused by measurements conducted at a high shear rate. An increase in K was more prominent and can be explained by the formation of particle agglomerates (flocs) of different sizes according to the following equation: 73 = K f 2.5 pc (7) where f pc is the quotient between the volume fraction of particles in the suspension f, and the volume fraction of clusters f c (so-called secondary structures). Thus, an increase in the ratio between sulfated zirconium hydroxide and boehmite leads to an increase of aggregated particles.…”

“…The above-mentioned characteristics are controlled by the active component synthesis per se and shaping steps. Not surprising, the main attention of the academic research groups has been focused on the synthesis of active components, as reported for example in some of the previous studies, − while significantly less attention has been paid to catalyst forming or scaling-up to an industrial level. − …”

“…Because of distinct surface chemistry each binder behaves in its own ways when mixed with an active component. Although the scope of academic investigations in catalyst preparations is predominantly based on the active component itself, several essential properties of technical catalysts result from the presence of binders. ,− Scale-up of catalytic materials to industrial levels for monoliths and pelletized materials ,,, has been reported addressing to some extent the influence of binders.…”