ZeoliteBinderFaujasiteExtrudatesCatalysisShapingChemical interactions occurring between zeolites and alumina binders during the critical steps of catalyst forming are the focus of this study. Three widely used
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...
Chemical reactivity and sorption in zeolites are coupled to confinement and—to a lesser extent—to the acid strength of Brønsted acid sites (BAS). In presence of water the zeolite Brønsted acid sites eventually convert into hydronium ions. The gra
(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 ...
Chemical reactivity and sorption in zeolites are coupled to confinement and—to a lesser extent—to the acid strength of Brønsted acid sites (BAS). In presence of water the zeolite Brønsted acid sites eventually convert into hydronium ions. The gra
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 data confirmed that amorphous silica—alumina cracking catalyst as well as exchanged Y zeolite exhibit no shape—selectivity for the conversion of n—hexane isomers while erionite and to a lesser extent ZSM—5 are highly shape— selective. The interesting feature of this work is the decrease ...
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. ...