Abnormal incorporation of amino acids into the gas hydrate crystal lattice.
Gas hydrates are crystalline ice-like solid materials enclosing gas molecules inside. The possibility of the presence of gas hydrates with amino acids in the universe is of interest when revealing the potential existence of life as they are evidence of a source of water and organic precursors, respectively. However, little is known about how they can naturally coexist, and their crystallization behavior would become far more complex as both crystallize with formation of hydrogen bonds. Here, we report abnormal incorporation of amino acids into the gas hydrate crystal lattice that is contrary to the generally accepted crystallization mode, and this resulted in lattice distortion and expansion. The present findings imply the potential for their natural coexistence by sharing the crystal lattice, and will be helpful for understanding the role of additives in the gas hydrate crystallization.
Department of Chemical Engineering, Pohang University of Science & Technology, Pohang 790-784, Korea. ce20047@postech.ac.kr.
Jeong-Hoon
JH
Sa
Gye-Hoon
GH
Kwak
Bo Ram
BR
Lee
Docheon
D
Ahn
Kun-Hong
KH
Lee
D000596:Amino Acids / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry; D003460:Crystallization; D005740:Gases / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D014867:Water / Q000737:chemistry*
D000596:Amino Acids; D005740:Gases; D014867:Water; D002245:Carbon Dioxide