Dehydrogenation of methylcyclohexane over Pt Sn supported on Mg Al mixed metal oxides derived from layered double hydroxides

Recent Trends on the Dehydrogenation Catalysis of Liquid Organic Hydrogen Carrier (LOHC): A Review

“…A variety of second metal-Pt bimetallic catalysts have been studied as dehydrogenation catalysts for various hydrocarbons [2,13,14] (see Table 2). Recently, Yan et al [15] reported that the addition of Sn to Pt/Mg-Al-O catalyst significantly enhanced the MCH dehydrogenation activity, which was attributed to the electron donation from Sn to Pt and the adjustment of the interaction of MCH and the resulting toluene with the Pt surface. On the other hand, when excess Sn is added, the surface Pt sites are diluted by the formation of Pt-Sn alloy, and the activity decreases.…”

“…As for the catalyst support, the most basic support is Al 2 O 3 [13,14,[17][18][19][20], and as other options, Mg-Al-O [15,21], USY zeolite [22], TiO 2 [17,23], TiO 2 -Al 2 O 3 [17,20], and Silicalite-1 [16] are reported. In addition to the role of high dispersion of Pt particles, the support material is also expected to suppress the aggregation of Pt particles by strong metal-support interaction (SMSI) (anchoring effect) and electron transfer between Pt and support.…”

Irreversible catalytic methylcyclohexane dehydrogenation by surface protonics at low temperature

“…[9][10][11][12][13][14][15] Many studies assessing the prevention of fouling and coke have been conducted. 4,6,7,[16][17][18][19] Catalyst stability is important to achieve adequate cost-effectiveness of the organic hydride system. Lowering the dehydrogenation temperature is also very important, because it can reduce energy consumption, and enables use of low-grade heat.…”

Study of catalytic hydrogenation and dehydrogenation of 2,3-dimethylindole for hydrogen storage application

“…However, with high enthalpy of dehydrogenation (>60 kJ mol À1 H2), the operation temperatures of these hydrogenated cycloalkanes were required over 300 C, which typically lead to the molecule cracking or coking. [27][28][29] Hence, a large number of literatures concerning the catalysts development for dehydrogenation of cycloalkanes were reported in decades. [30][31][32][33][34][35][36][37] In 2004, a series of heteroaromatic molecules with relatively low heat of hydrogenation screening as LOHCs were rstly studied through systematic experimental and theoretical by Pez et al 38,39 It is reported that incorporation of N heteroatom into the aromatic ring favored the dehydrogenation thermodynamics and kinetics.…”