Naphthalene hydrogenation over Mg-doped Pt/Al 2 O 3

Deep Hydrogenation Saturation of Naphthalene Facilitated by Enhanced Adsorption of the Reactants on Micro‐Mesoporous Pd/HY

“…Because trans-decalin is thermodynamically more stable. [42] During the reaction, H 2 pressure was kept constant to maintain a changeless hydrogen concentration. The concentrations of naphthalene, tetralin and decalin changed with time were monitored.…”

ENHANCED CATALYTIC ACTIVITY ON THE NAPHTALENE HYDROGENATION REACTION OVER Pt-Pd/Al2O3-CeO2 CATALYSTS

“…The evaluation of the catalytic activity in the naphthalene conversion was carried out in a stirred batch reactor (Parr 4842, 450 ml vessel volume) operating at 290°C, 5.5 MPa and 1200 rpm (∼126 rad s −1 ) mixing speed. According to the literature, this speed guarantees a fast-enough supply of reactant molecules to the catalyst particles surface in order to discard reaction control by external reactants diffusion (Escobar et al, 2017). The reaction mixture contained 0.2 g of catalyst (materials exsitu reduced at 350°C under H 2 flow, 60 mL min −1 , 1 h) and 0.3 g of naphthalene dissolved in 100 mL of hexadecane.…”

“…Catalytic runs typically lasted 2 h. Reaction products were analyzed by GC (Agilent Technologies 6890N) equipped with a flame ionization detector and a capillary column (5% phenyl-95% methylpolysiloxane, Econo-Cap-5, from Alltech). From previous experiments reported in the literature the appropriate conditions were determine to avoid reaction control by either interfacial or intraparticle diffusion (particle size ∼165 µm) (Escobar et al, 2017). The results of naphthalene hydrogenation were also compared with the Pt-Pd/Al 2 O 3 reference catalyst.…”

“…For fuels quality parameters, such as cetane number, paraffins are the most desirable components, while the unfavorable components are multi-ring aromatic compounds due to environmental regulations. The catalytic hydrogenation reactions have been therefore the focus of many recent studies due to the interest for deep hydrogenation (HYD) of aromatics (Chen et al, 2015;Ju et al, 2015;Téllez-Romero et al, 2015;Escobar et al, 2017;Sánchez-Minero et al, 2010;and Liu et al, 2016). In particular, the hydrogenation of naphthalenes produces tetralins while the complete saturation leads to the formation of decalins.…”

Chromium-free Cu@Mg/γ-Al2O3 – an active catalyst for selective hydrogenation of furfural to furfuryl alcohol

“…9 Various Mg incorporated catalysts such as Cu-Mg/ZnO, 10,11 Mg-doped Pt/Al 2 O 3 , 12 Ni-Mg/SiO 2 , 13 Mg-doped Co-Ni nanocatalyst, 14 Mg-TiO 2 , 15 Mg doped ZnO, 16 graphene oxide/WS 2 /Mg-doped ZnO nanocomposite 17 have been explored in hydrogenation, hydrogen storage and other type reactions. [10][11][12][13][14][15][16][17] However, limited detailed studies are reported in the literature to demonstrate the performance of magnesium doped catalyst in FF hydrogenation to FA. Therefore, we have synthesized and studied performance of magnesium doped heterogeneous Cu@Mg/g-Al 2 O 3 catalyst for the selective hydrogenation of FF to FA under solvent free conditions.…”