In:
Frontiers in Chemistry, Frontiers Media SA, Vol. 10 ( 2022-9-21)
Abstract:
The selective hydrogenolysis of glycerol to 1,3-propanediol (1,3-PDO) with high added value is attraction but challenging. Pt-WO x -based catalysts have been extensively studied in the selective hydrogenolysis of glycerol. The catalyst support and the physicochemical state of WO x play important roles on this reaction. In this paper, Pt-WO x catalysts supported on TiO 2 with different crystal forms were prepared and studied for their catalytic performance in hydrogenolysis of glycerol. It was observed that the catalytic performance of anatase-type (A-type) TiO 2 -supported catalyst (Pt/W/A-Ti) is much better than that of the rutile-type (R-type) TiO 2 catalyst (Pt/W/R-Ti) due to its higher stability. Furthermore, the influence of W loading amount and state were thoroughly investigated for the Pt/W/A-Ti catalysts, and Pt/W/A-TiO 2 with 5 wt% loading of WO x achieved the best catalytic performance (100% conversion of glycerol and 41% yield of 1,3-PDO under the optimal reaction conditions), owing to the suitable WO x domains and high dispersion of W species, as evidenced by XRD patterns and TEM images. Mechanism study by in-situ DRIFTS experiments indicated that glycerol was first converted to 3-hydroxypropanal and then converted to 1,3-PDO through subsequent reactions.
Type of Medium:
Online Resource
ISSN:
2296-2646
DOI:
10.3389/fchem.2022.1004925
DOI:
10.3389/fchem.2022.1004925.s001
Language:
Unknown
Publisher:
Frontiers Media SA
Publication Date:
2022
detail.hit.zdb_id:
2711776-5
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