Factors affecting catalytic destruction of H2O2 by hydrogenation and decomposition over Pd catalysts supported on activated carbon cloth (ACC)

Rapid Hydrogen Peroxide Decomposition Using a Microreactor

“…At that point, the catalyst was considered as “passivated”. This could be attributed to the valence state change of Pd(0) into Pd(II), which has limited the capacity of catalyzing the decomposition process, as discussed by Gudarzi et al . To ensure constant catalyst activity in each experiment, only the passivated catalyst was used in all the other tests below unless stated otherwise.…”

“…The mechanism of H 2 O 2 decomposition has been studied before by Choudhary et al , Zeineb et al , Ribeiro et al , Gudarzi et al , and Hessel et al . The effect of medium composition , and structure and surface chemistry of the catalysts , , have been investigated systematically. However, most of the kinetic studies have been performed in batch reactors, where the influence of mass transfer is difficult to exclude.…”

Catalyst activity of carbon nanotube supported Pd catalysts for the hydrogenation of nitroarenes

“…The separation of Pd nanoparticles from the reaction products and the loss of catalytic activity upon reuse are also persistent problems. One strategy for overcoming these limitations is to immobilie the catalytic nanoparticles on a solid support e.g., carbon [25], metal oxide [26], and zeolite [27], or to stabilize them with micelle [28], microgel [29], surfactant [30], nanocapsule [31], or dendrimer [32]. In this regard, carbon nanotubes (CNTs) are promising supporting materials because of their high mechanical strength, large surface area, good electrical conductivity, and durability under harsh conditions [33,34].…”

Synthesis of hydrogen peroxide over Pd/SiO2/COR monolith catalysts by anthraquinone method

“…The hydrogenation process requires a catalyst, and currently palladium-based pellet catalysts are mainly used in industrial applications [7,[15][16][17][18][19][20][21][22][23][24][25]. Halder and Lawal [22] conducted the reaction in a microreactor with inner diameter 0.775 mm and the loading 13 mg supported Pd catalyst (1% Pd).…”