@article {46739,
	title = {Advances in solid catalysts for selective hydrogenolysis of glycerol to 1,3-propanediol},
	journal = {Catalysis Reviews-Science and Engineering},
	year = {2021},
	month = {JAN},
	type = {Review},
	abstract = {<p>Glycerol is one of the top 12 platform chemicals obtained from biomass. Its surplus availability as a by-product of biodiesel, fat-splitting and soap manufacturing industries and affordable price lends significant opportunity for its valorization, using solid catalysts, into propanediols (PDOs), particularly to 1,3-propanediol (1,3-PDO), by selective hydrogenolysis. 1,3-PDO is an important chemical with wide applications including that as a precursor in polymers manufacturing. However, the synthesis of 1,3-PDO by selective cleavage of the secondary C-O bond of glycerol in the presence of hydrogen (instead of the primary C-O bond yielding 1,2-PDO) is highly challenging. Of late, supported Pt and Ir catalysts in combination with a reducible oxide (WO(x)or ReOx) were found selective for 1,3-PDO formation. Support, metals composition and additives (co-added metals) affect the performance of these catalysts. Detailed investigations revealed that metal dispersion, electronic connectivity between metal and metal oxide/support, hydrogen activation/spillover and Bronsted acidity are some parameters that influence the activity and selectivity of these bi-functional, metal-metal oxide catalysts. This review summarizes the latest advances in these solid catalysts for selective hydrogenolysis of glycerol to 1,3-PDO, a monomer for advanced polymers.</p>
},
	keywords = {1, 3-Propanediol, bifunctional metal-metal oxide catalyst, biomass valorization, Glycerol, Hydrogenolysis},
	issn = {0161-4940},
	doi = {10.1080/01614940.2020.1794737},
	author = {Bhowmik, Susmita and Darbha, Srinivas}
}
@article {48187,
	title = {Insights into active tungsten species on Pt/W/SBA-15 catalysts for selective hydrodeoxygenation of glycerol to 1,3-propanediol},
	journal = {Molecular Catalysis},
	volume = {531},
	year = {2022},
	month = {OCT},
	pages = {112704},
	type = {Article},
	abstract = {<p>
	Diols are important class of industrial chemicals. Their synthesis from bio-resources (instead from fossil feed-stocks) is sustainable. In this study, we probed active tungsten species on Pt/W/SBA-15 catalysts for selective synthesis of 1,3-propanediol (1,3-PDO) from aqueous glycerol through a liquid-phase hydrodeoxygenation re-action. A synergistic enhancement in glycerol conversion and 1,3-PDO selectivity was observed when both Pt and W were present on the catalyst. A volcano-shape variation followed with a gradual increase in glycerol conversion and 1,3-PDO yield with W-loading (0.25-15 wt\%) was observed. Pt dispersion and acidity of the catalyst dis-played similar variations with the W-loading confirming their critical role in the reaction. Structure-function relationships inferred that oligomeric WOx with moderate Bro center dot nsted acidity (predominant at 1 wt\% W-loading) in contact with dispersed Pt are the active species for 1,3-PDO formation and crystalline WO3 with strong Bro center dot nsted acidity (prevalent above 4 wt\% W-loading) in association with Pt nanoparticles lead to 1-propanol formation.</p>
},
	keywords = {3-Propanediol, Active sites, Glycerol, Hydrodeoxygenation, Hydrogenolysis, Supported Pt-WO x},
	issn = {2468-8231},
	doi = {10.1016/j.mcat.2022.112704},
	author = {Bhowmik, Susmita and Enjamuri, Nagasuresh and Sethia, Govind and Akula, Venugopal and Marimuthu, Banu and Darbha, Srinivas}
}
