Fig. 6: Methane hydrate formation from AM-Ice synthesized with different amino acids.
From: Rapid conversion of amino acid modified-ice to methane hydrate for sustainable energy storage
a Illustration of the molecular structure of tryptophan, methionine, leucine, arginine, and histidine. Red, blue, yellow, gray, and white spheres represent oxygen, nitrogen, sulfur, carbon, and hydrogen atoms, respectively. b The gas uptake obtained during hydrate formation from non-modified ice and AM-Ice synthesized with various amino acids at a concentration of 3000 ppm. Each error bar reflects the standard deviation from three individual measurements. Each system was tested under identical conditions of 272.7 K and 6 MPa.
