resistance inside the catalyst, as mentioned by Chen et al. [ 17 ]. However, obvious catalyst deactivation could only be detected after a certain amount of coke is deposited already. Referring to the kinetic results in the early study [ 7 ], the methanol
Authors:Mi-Young Kim, Se Min Park, Jung-Hyun Park, Chae-Ho Shin, Won-Jin Moon, Nark-Eon Sung, and Gon Seo
exhaust additionally requires the supports to have a high resistance against sulfur contained in diesel fuels [ 2 ]. The reaction between alumina and sulfur dioxide produces aluminum sulfate, resulting in a serious catalyst deactivation. The formation of a
Authors:K. Bachari, R. M. Guerroudj, and M. Lamouchi
diffusional resistances at higher space velocities [ 29 ], but might as well indicate that this product is formed initially and later converted to the secondary products such as 2,4-DTBP and 4-TBP.
Authors:Joanna Wiśniewska, Grzegorz Wrzeszcz, Stanisław Koter, and Tomasz Ligor
increased potency, bioavailability and degradation resistance. However, the growing pharmaceutical industry and the resulting increase in pharmaceutical pollution are becoming a greater risk to the environment. Persistent, bioaccumulative and toxic (PBT
on BC. It is clear that the removal of MB with BC depends on the dye concentration. This phenomenon may be related to driving forces that need to be overcome for the resistances of mass transfer between the aqueous and solid phases. Similar results
Authors:Hanieh Nassiri, Hassan Arabi, and Shokoufeh Hakim
concentration of propylene monomer at the catalyst surface, M, is taken to be the bulk monomer concentration; (vii) the value of Thiele modulus is less than one which indicates the absence of a internal mass transfer resistance.
Authors:Michal Baudys, Martin Zlámal, Josef Krýsa, Jaromír Jirkovský, and Petr Kluson
) showed lower photoactivity but much better mechanical resistance. Therefore, these materials are more appropriate for the preparation of particulate films for large scale water treatment applications.
Authors:Seung-Ho Kwack, Myung-June Park, Jong Wook Bae, Kyoung-Su Ha, and Ki-Won Jun
Small catalyst particle sizes allowed no mass transfer resistance to be assumed. The dimensionless Mears parameter in this study was below 0.15, indicative of negligible external mass diffusion [ 58 ]. The occurrence of any internal pore