Selective hydrogenation into oleyl alcohol of methyl oleate in the presence of RuSnAl2O3 catalysts

Effect of promoters on the structures and properties of the RuB/γ-Al2O3 catalyst

“…According to the literature [18], acids are some of the primary products from the hydrogenation of esters, and the Scheme 1. Possible reaction pathway in the hydrogenation of ethyl lactate.…”

“…Ru-based catalysts with different supports or different preparation methods have been studied extensively by a number of researchers [8][9][10][11][12][13][14][15][16][17][18]. Promoting effect of tin on the ruthenium has also been studied intensively by several research groups [17][18][19][20][21][22][23][24].…”

Influence of the Support Material on the Activity and Selectivity of Ru–Sn–B Catalysts for the Selective Hydrogenation of Methyl Oleate

“…It should also be mentioned that the existence of two different intermetallic phases of Ru-Sn has been demonstrated [11]. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Several researchers have proposed that the active sites on the Ru-Sn-B/γ-Al 2 O 3 catalyst for the selective hydrogenation of esters should be metallic ruthenium in interaction with oxidized tin [4,5,[12][13][14]. Similarly, Galezzot et al [15] have proposed that the activity of tin-promoted metallic catalysts for the hydrogenation of carbonylic compounds to alcohols is due to the presence of Sn n+ species.…”

Influence of preparation method and boron addition on the metal function properties of RuSn catalysts for selective carbonyl hydrogenation

“…These catalysts have good activity for the hydrogenation of ethyl acetate to ethanol6 but selectivity for the hydrogenation of unsaturated fatty acids to unsaturated fatty alcohols is poor 7. Some further modification of the RuSn couple by addition of B was studied in order to improve hydrogenation selectivity to unsaturated fatty alcohols 8–10. Mizukami et al 11 found that the activity and selectivity for oleic acid hydrogenation of RuSn catalysts prepared by the sol‐gel technique strongly depends on the support.…”