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Matches in SemOpenAlex for { <https://semopenalex.org/work/W1994997651> ?p ?o ?g. }

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• W1994997651 abstract "The effect of residual impurities from glucose fermentation to lactic acid (LA) on subsequent ruthenium-catalyzed hydrogenation of LA to propylene glycol (PG) is examined. Whereas refined LA feed exhibits stable conversion to PG over carbon-supported ruthenium catalyst in a trickle bed reactor, partially refined LA from fermentation shows a steep decline in PG production over short (<40 h) reaction times followed by a further slow decay in performance. Addition of model impurities to refined LA has varying effects: organic acids, sugars, or inorganic salts have little effect on conversion; alanine, a model amino acid, results in a strong but reversible decline in conversion via competitive adsorption between alanine and LA on the Ru surface. The sulfur-containing amino acids cysteine and methionine irreversibly poison the catalyst for LA conversion. Addition of 0.1 wt% albumin as a model protein leads to slow decline in rate, consistent with pore plugging or combined pore plugging and poisoning of the Ru surface. This study points to the need for integrated design and operation of biological processes and chemical processes in the biorefinery in order to make efficient conversion schemes viable." @default.
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• W1994997651 date "2008-09-01" @default.
• W1994997651 modified "2023-10-17" @default.
• W1994997651 title "Effect of biogenic fermentation impurities on lactic acid hydrogenation to propylene glycol" @default.
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• W1994997651 doi "https://doi.org/10.1016/j.biortech.2007.10.027" @default.
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