Hydrogenolysis of glycerol to 1,2-propanediol over copper containing catalysts with hydrotalcite structure

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62243136%3A_____%2F16%3AN0000014" target="_blank" >RIV/62243136:_____/16:N0000014 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Hydrogenolysis of glycerol to 1,2-propanediol over copper containing catalysts with hydrotalcite structure

Original language description

Glycerol is produced in large quantities as byproduct from biodiesel (FAME) production can be utilized not only in the manufacture of specialties but also as a substitute for traditional petrochemical intermediates, mainly for propylene. One of the most promising ways of glycerol utilization is its catalytic hydrogenolysis to 1,2-propanediol. In recent years, the mixed oxides catalysts containing Cu, other bivalent metal and Al oxides, prepared by thermal decomposition of hydrotalcite-like structures, attracted attention as very promising catalysts for glycerol hydrogenolysis. The role of second bivalent metal content in hydrotalcite-like precursor (besides Cu2+) was studied in our study. These experiments were aimed at the preparation and comparative testing of the catalysts prepared from hydrotalcite-like structures, which contained Zn, Fe, Ni or Co as the second bivalent metal (M), besides copper. Cu/M/Al hydrotalcite with molar ratio 2:1:1 was precipited at the condition of controlled pH (9,5), temperature (60 °C) and continuous introduction of the source solutions within s period of 30 min. The precipitate was then filtered, dryed, calcined and activated. The activated catalysts were tested in glycerol hydrogenolysis at 230 °C, and the hydrogen pressure of 7 MPa in a batch autoclave. Catalyst loading was 0,05. The Zn containing catalyst appeared to be the most active one from the whole set of the catalysts prepared. The selectivity to 1,2-propanediol of 93 % at 97 % glycerol conversion was achieved with this catalyst while the selectivity values only around 70 % could be achieved with other catalysts. The Ni modified catalyst was characterized as having the lowest activity and selectivity among the whole group of the catalysts prepared.

Czech name

—

Czech description

—

Type

O - Miscellaneous

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů