With increasing biodiesel production, availability of glycerol is expected to increase. New processes are needed for converting this surplus glycerol to value-added chemicals. In this work, we used niobia catalysts for the liquid-phase acetalisation of glycerol without using any solvent. High conversions were achieved (∼80%), though water was present in the reaction system. The calcination temperature changed the strength as well as the nature of acidity of the samples. Samples with higher Bronsted acid strength exhibited higher catalytic performance. The results show that niobia is a water tolerant, reusable catalyst for glycerol acetalisation.
|Number of pages||7|
|Journal||Catalysis Science and Technology|
|Early online date||1 Mar 2012|
|Publication status||Published - 1 May 2012|