Glycine oligomerization on silica and alumina |
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| Affiliation: | (1) Institute of Inorganic Chemistry, Slovak Academy of Sciences, 842 36 Bratislava, Slovakia;(2) Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria |
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| Abstract: | Oligomerization of glycine (gly) and diglycine (gly2) on silica and alumina was observed in experiments simulating wetting-drying cycles at 80°C. Glycine produces less than 1% total yield of gly2 and diketopiperazine (DKP) after one week. In experiments starting from gly2, more than 10% DKP is formed. Formation of higher oligomers (gly3–gly6) proceeded as well, with 3.8% and 5.1% total yields on silica and alumina surfaces respectively. |
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| Keywords: | catalysis silica alumina prebiotic peptide formation |
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