Abstract
We found that Pt-modified Ir-ReOx/SiO2 acted as an effective catalyst for aqueous phase reforming (APR) and selective C-O hydrogenolysis of glycerol without external hydrogen sources at low temperature of 463 K, and that 0.5 wt% loaded Ir-ReOx/SiO2 (Pt(0.5)-Ir-ReOx/SiO2) provided 1,2-propanediol (1,2-PrD) and acetol in high total yield of 53% at 81% conversion. The initial activity (TOFinitial) over Pt(0.5)-Ir-ReOx/SiO2 at 463 K was estimated to be 13 h−1. Pt-Ir alloy and Ir-ReOx species in Pt-Ir-ReOx/SiO2 are main active species for APR and selective C-O hydrogenolysis, respectively, and the high yield can be achieved by balancing the APR and hydrogenolysis activities through the optimization of Pt and Ir-ReOx molar ratio.
Original language | English |
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Pages (from-to) | 106-116 |
Number of pages | 11 |
Journal | Catalysis Today |
Volume | 303 |
DOIs | |
Publication status | Published - 2018 Apr 1 |
Keywords
- Aqueous phase reforming
- Glycerol
- Hydrogenolysis
- Iridium
- Platinum
- Rhenium
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)