The bimetallic flame spray-synthesized AuPd/TiO2 catalysts (Au:Pd weight ratio 1:1) were reduced for 2 h under H-2 at two different temperatures (40 degrees C and 500 degrees C) and tested in the liquid phase selective hydrogenation of 1-heptyne under mild conditions (30 degrees C and 4 bar H-2). Based on TEM-EDX analysis of individual nanoparticles, reduction at 500 degrees C tends to homogenize the composition of the individual AuPd nanoparticles without significant changes of their average particle size and bulk composition. Higher reaction rate (245 mu mol s(-1) g cat.(-1)) was obtained on the AuPd/TiO2 R40 than on the AuPd/TiO2 R500 (223 mu mol s(-1) g cat.(-1)). Upon reduction at 500 degrees C, the bimetallic AuPd/TiO2 exhibited a similar degree of the strong-metal support interaction (SMSI) effect as the monometallic one. As revealed by XPS results, the ratios of Pd/Ti on both catalysts decreased by ca. 23%, due probably to the migration of TiOx species onto the metals. The highest yield of 1-heptene (similar to 93%) was obtained over the bimetallic AuPd/TiO2 reduced at 40 degrees C in 20 min reaction time under the reaction conditions used. The high temperature reduction is unnecessary for the improvement of catalyst performances when using supported bimetallic AuPd catalysts. (C) 2015 Elsevier B.V. All rights reserved.