ZeoliteBinderFaujasiteExtrudatesCatalysisShapingChemical interactions occurring between zeolites and alumina binders during the critical steps of catalyst forming are the focus of this study. Three widely used and commercially significant variants of FAU zeolite, covering a wide range of Si/Al ratios, ...
Selective catalytic reduction of nitrogen oxides (SCR-deNOx) applies the reactions of NH3 with NOx compounds and converts them into non-harmful nitrogen gas and water vapor in the presence of a selective catalyst. Since the 1980s V2O5/WO3/TiO2 catalysts have been used in SCR-deNOx from the...
27]. Large pore size and broad pore size distribution are resulted [46]. Ordered carbon structure is a good choice, but elevated cost [27] and effort required in the preparation of ordered carbon structures are hindering their use on commercial scale [15]. Moreover, the template is required...
Zeolites are tectosilicates with an impressive number of potential ways to link the corner shared SiO4tetrahedra forming a wide variety of pores and cavities31,32,33. Some of these framework tetrahedra are synthetically exchanged for other elements than Si4+, typically Al3+, but also Ga3+, B3+...
(I) via the sulfur-metal mode are observed52. Therefore, π-complexes are formed between Cu(I) species and thiophene, which leads to selective adsorption of thiophenic sulfur compounds. Of course, in addition to π-complexation interaction, acid sites and pore filling also contribute to ...
The highest 2-MN yield (40.6%) was achieved over the H-Mordenite catalyst at 350 °C with TOS = 15 min. It was found that the pore dimensions, catalysts acidity (BAS), and the thermodynamical stability of the product are the main parameters which influence the 2-MN yield. In our ...
FeAlBEA catalyst with higher strength and amount of these centres than FeSiBEA ones is more active and much more selective toward N2 in SCR of NO with methane. Introduction Recently published works [1], [2], [3], [4] show that iron zeolites are active in several reactions including ...
The selectoforming adds a shape selective effect of the zeolite cages to the hydrocracking by the choice of zeolites (erionite, offretite) which selectively convert only C 5 to C 9 n-paraffins from naphthas and reformates.(3) Oil dewaxing also uses a shape selective catalyst for the ...
transparent to radiation for ease of later analysis, such as transparent to infrared radiation or transparent to x-rays. However, the vessels themselves may provide a convenient way to provide catalyst function to the reaction occurring within the vessel. For example, catalyst may be present on ...
Nitrogen diluent was also passed over the catalyst at about the same rate; this diluent could be diverted through a bubbler containing toluene to deliver toluene vapour to the reaction system. The products produced were analyzed by GLC and the results are displayed in Table 4. ...