Do not forget the classical catalyst poisons: The case of biomass to glycols via catalytic hydrogenolysis was written by te Molder, Thimo D. J.;Kersten, Sascha R. A.;Lange, Jean-Paul;Ruiz, M. Pilar. And the article was included in Biofuels, Bioproducts & Biorefining in 2022.Related Products of 57-55-6 This article mentions the following:
The conversion of herbaceous biomass to glycols via tungstate catalyzed hydrogenolysis is challenging owing to its high content of extractives, inorganics and S/N, compared with woody biomass. We tested the hydrogenolysis performance of hay in batch autoclave experiments in the presence of soluble sodium polytungstate and Raney Ni at 245°C, both in excess of catalyst as well as under catalyst-starving conditions. By this method, we found that addnl. tungstate and Raney Ni poisons, or at least their much higher concentrations, are present in the hay feedstock compared with woody biomass. It turns out that N- and in particular S-containing components present in hay are the root cause for deactivation of the hydrogenation catalyst. From the exptl. data we have derived feedstock criteria for N and S that should be targeted in terms of catalyst consumption for operation in an industrially relevant window. These challenging criteria urge the development of effective pretreatments for S/N removal or the employment of S/N-tolerant catalysts in the field of catalytic biomass conversion. In the experiment, the researchers used many compounds, for example, 1,2-Propanediol (cas: 57-55-6Related Products of 57-55-6).
1,2-Propanediol (cas: 57-55-6) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Related Products of 57-55-6
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts