Abstract
The paper presents the results obtained in studying glycerol hydrogenolysis into 1-propanol and 2-propanol over bifunctional Ni/WO3-TiO2 and Ni/WO3-ZrO2 catalysts in the flow system. Due to the optimal combination of acidic and hydrogenation properties of the heterogeneous catalysts, they exhibit higher performance in glycerol conversion into C3 alcohols, although the process is carried out in rather mild conditions. At the reaction temperature of 250 °C and hydrogen pressure of 3 MPa, the total yield of 1-propanol and 2-propanol reaches 95%, and the glycerol conversion is close to 100%.
Highlights
Today an important direction for obtaining motor fuel from vegetable raw materials is the manufacturing of so-called “biodiesel”, which is a mixture of fatty acids esters
The data presented in these papers show quite convincingly that in these binary systems, the highest acidity is exhibited by samples containing tungstena
16%Ni/20%WO3 -80%TiO2 used in glycerol hydrogenolysis provide a propanols yield reaching 93–94%
Summary
Today an important direction for obtaining motor fuel from vegetable raw materials is the manufacturing of so-called “biodiesel”, which is a mixture of fatty acids esters The production of this type of motor fuel includes, as the main stage, the transesterification of vegetable oils or animal fats using low molecular alcohols, with glycerol being formed as the main by-product [1,2,3]. In this regard, there is a problem of utilization of glycerol that is accumulated in large quantities [4,5,6,7,8,9,10].
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