Rajnish Kumar

Department Of Chemical Engineering

Pradeep Thalappil

Department Of Chemistry

Jyotirmoy Ghosh

Radha Gobinda Bhuin

Gopi Ragupathy

Nilesh Choudhary

Carbon dioxide

chemical compound

CLATHRATE HYDRATE

Methane

Methanol

unclassified drug

Water

chemical interaction

chemical structure

Desorption

hydrogen bond

infrared radiation

letter

molecular dynamics

priority journal

Simulation

TEMPERATURE PROGRAMMED DESORPTION

Fulltext

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Proceedings of the National Academy of Sciences of the United States of America

Clathrate hydrates (CHs) are ubiquitous in earth under high-pressure conditions, but their existence in the interstellar medium (ISM) remains unknown. Here, we report experimental observations of the formation of methane and carbon dioxide hydrates in an environment analogous to ISM. Thermal treatment of solid methane and carbon dioxide–water mixture in ultrahigh vacuum of the order of 10 −10 mbar for extended periods led to the formation of CHs at 30 and 10 K, respectively. High molecular mobility and H bonding play important roles in the entrapment of gases in the in situ formed 5 12 CH cages. This finding implies that CHs can exist in extreme low-pressure environments present in the ISM. These hydrates in ISM, subjected to various chemical processes, may act as sources for relevant prebiotic molecules. © 2019 National Academy of Sciences. All Rights Reserved.

Clathrate hydrates in interstellar environment

Proceedings of the National Academy of Sciences

No compelling evidence for clathrate hydrate formation under interstellar medium conditions over laboratory time scales

The Journal of Chemical Physics

Overview: Nucleation of clathrate hydrates

Chemical Physics

Calculations of NMR properties for sI and sII clathrate hydrates of carbon dioxide

Methanol incorporation in clathrate hydrates and the implications for oil and gas pipeline flow assurance and icy planetary bodies

Reply to Choukroun et al.: IR and TPD data suggest the formation of clathrate hydrates in laboratory experiments simulating ISM

Journal	Proceedings of the National Academy of Sciences of the United States of America
Publisher	National Academy of Sciences
ISSN	00278424
Open Access	No