Electrocatalytic amino acid synthesis from biomass-derivable keto acids over ball milled carbon nanotubes

Abstract

The electrocatalytic reductive amination (ERA) offers an attractive way to make organonitrogen chemicals from renewable feedstock. Here, we report carbon nanotube (CNT) as an effective catalyst for the ERA of...

Photocatalytic Upgrading of Polylactic Acid Waste into Alanine under Mild Conditions

“…In addition, as the pH decreases, the alanine production decreases, while the H 2 evolution increases (Figure S37). This may be because pH affects the generation of imine intermediates coming from equilibrium between PA and NH 3 [25] . These results indicate that the hydrogenation of imine to generate alanine over CoP/CdS is likely to occur through adsorbed H intermediates rather than proton‐coupled electron transfer (PCET).…”

Direct amination of poly(p-phenylene oxide) to substituted anilines over bimetallic Pd–Ru catalysts

“…Characteristic CNT peaks at 1321 cm −1 , 1606 cm −1 , 1580 cm −1 , and 2641 cm −1 were identified. 61 Metal doping leads to a subtle I D / I G intensity ratio decrease from 1.73 to 1.46–1.62, indicating possible defect annealing during 400 °C catalyst reduction. 62 Bimetallic catalysts supported on CNT with varying Pd : Ru weight ratios (0 : 1, 3 : 7, 5 : 5, 7 : 3, 1 : 0) were synthesized and evaluated for PPO conversion to dimethylanilines at 5 bar H 2 , 280 °C for 4 h. Pd/CNT achieved a 3% dimethylanilines yield, while Ru/CNT was inactive for amination.…”

Beyond biodegradation: upcycling of polylactic acid plastic waste into amino acids via cascade catalysis under mild conditions

“…51 Additionally, water molecules serve as proton donors during the pyruvate-to-alanine conversion, which inevitably makes the H 2 evolution reaction a competitive process. 52 In view of this, we aimed to design a nontoxic catalyst to selectively steer the conversion of pyruvate to alanine. Here, we utilized TiO 2 nanorods supported on Ti felt (TiO 2 /TF) as an electrocatalyst towards alanine production, owing to the large energy barrier for H 2 evolution over TiO 2 .…”