<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Simakova, Irina L.</style></author><author><style face="normal" font="default" size="100%">Demidova, Yuliya S.</style></author><author><style face="normal" font="default" size="100%">Simonov, Mikhail N.</style></author><author><style face="normal" font="default" size="100%">Niphadkar, Prashant S.</style></author><author><style face="normal" font="default" size="100%">Bokade, Vijay V.</style></author><author><style face="normal" font="default" size="100%">Devi, Nandini</style></author><author><style face="normal" font="default" size="100%">Dhepe, Paresh L.</style></author><author><style face="normal" font="default" size="100%">Murzin, Dmitry Yu</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Carbon supported size-controlled ru catalysts for selective levulinic acid hydrogenation into γ-valerolactone</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Siberian Federal University-Chemistry</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2020</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JAN</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">13</style></volume><pages><style face="normal" font="default" size="100%">5-16</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Liquid phase levulinic acid hydrogenation into γ-valerolactone in 1,4-dioxane as a solvent (165°C, 20 bar) was studied over a range of Ru monometallic catalysts using mesoporous carbon material Sibunit as a support. In addition to the catalyst prepared by impregnation with RuCl&lt;sub&gt;3&lt;/sub&gt;∙nH&lt;sub&gt;2&lt;/sub&gt;O (0.1 M) followed by reduction in H&lt;sub&gt;2&lt;/sub&gt;, size-controlled Ru(NPs)/Sibunit catalysts were synthesized by immobilization of polyvinylpyrrolidone (PVP) stabilized Ru nanoparticles (NPs) (d&lt;sub&gt;Ru&lt;/sub&gt;=2.4 nm). Сarbon supported colloidal Ru NPs were not studied earlier in levulinic acid hydrogenation. Activity of colloidal Ru(NPs)/Sibunit catalysts was found to be lower than that of impregnated Ru/Sibunit which could be attributed to hampering effect of PVP. However, colloidal Ru(NPs)/Sibunit purified by thermal treatment in air (180°C) followed by reduction in H&lt;sub&gt;2&lt;/sub&gt; (400°C) exhibited the same activity as impregnated one yielding 93% γ-valerolactone at 100% levulinic acid conversion. Applicability of supported PVP-assisted colloidal Ru NPs in hydrogenation of levulinic acid illustrates a potential to prepare more efficient catalysts for this reaction with a desired particle size. The catalysts were characterized by TEM, XRF, and N&lt;sub&gt;2&lt;/sub&gt; physisorption to compare their physical chemical properties.&lt;/p&gt;
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