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On the Nature of Blueshifting Hydrogen Bonds
Chemistry – A European Journal, 2014AbstractThe block‐localized wave function (BLW) method can derive the energetic, geometrical, and spectral changes with the deactivation of electron delocalization, and thus provide a unique way to elucidate the origin of improper, blueshifting hydrogen bonds versus proper, redshifting hydrogen bonds.
Mo, Yirong +5 more
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On the Nature of Hydrogen–Hydrogen Bonding
2017This chapter reviews the recent experimental and computational evidence that support the concept of “hydrogen–hydrogen (or H–H) bonding” which involves the interaction of two neutral hydrogen atoms or two hydrogen atoms bearing charges of the same sign, as a new class of weak interactions. The H–H bonding interaction gains importance due to its utility
Juan C. García-Ramos +2 more
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The Hydrogen System in the Subsurface: Implications for Natural Hydrogen Exploration
ADIPEC, 2023Abstract In the context of global efforts to achieve carbon neutrality, Hydrogen (H2) has emerged as a key solution for reducing greenhouse gases emission. However, current methods of hydrogen production, such as thermochemical and electrochemical processes like electrolysis, methane reforming and pyrolysis, are generally expensive and ...
Hongwen Zhao +4 more
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The Relative Abundance of Hydrogen Isotopes in Natural Hydrogen
Physical Review, 1932The relative abundances of isotopes have been investigated extensively in recent years, but few researches of such ratios when one isotope is very rare have been reported. We have investigated a number of samples of hydrogen from various sources, water from the crater of Mc. Kilauea, an obsidian, Devonian water, and hydrogen from helium bearing natural
Charles A. Bradley, Harold C. Urey
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On the Nature of “Palladium Hydrogen”
Proceedings of the Royal Society of Edinburgh, 1899Ever since the remarkable discovery by Graham in 1866 that palladium possesses the power of occluding hydrogen gas in large quantity, various views have from time to time been put forward to explain the true nature of the phenomenon. Whilst some observers regard hydrogenised palladium as an alloy or solid solution, others again consider it to be, or at
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The Nature of Hydrogen Bonding
Journal of Chemical Education, 2005Students use toy connecting blocks and Velcro to investigate weak intermolecular interactions, specifically hydrogen bonds.
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The Journal of Chemical Physics, 1959
Starting from a molecular orbital viewpoint, a general description is given of hydrogen bonds X—H···Y. The case of weak hydrogen bonds, as in associated liquids, is developed in detail, with the O–H···O bond as an example. The new feature in the treatment is the introduction of excited 2s and 2p orbitals of the hydrogen atom (Sec. II), the consequences
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Starting from a molecular orbital viewpoint, a general description is given of hydrogen bonds X—H···Y. The case of weak hydrogen bonds, as in associated liquids, is developed in detail, with the O–H···O bond as an example. The new feature in the treatment is the introduction of excited 2s and 2p orbitals of the hydrogen atom (Sec. II), the consequences
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Natural Hydrogen Knowledge Platform: Introduction to Natural Hydrogen Research
Natural hydrogen, also known as geologic, native, gold, and white hydrogen, is a primary energy source with the potential to feed a future society with increasing hydrogen demand. Its multiple generation processes hint at a wide geographic distribution of generation potential, which can supply low-emission energy to off-grid communities and supplement ...Setoyama, Eiichi +3 more
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NOx Emissions and Efficiency of Hydrogen, Natural Gas, and Hydrogen/Natural Gas Blended Fuels
SAE Technical Paper Series, 1996<div class="htmlview paragraph">Engine dynamometer testing of homogeneous charge, spark ignition lean burn engines fueled by natural gas, hydrogen/natural gas blends and neat hydrogen was conducted to determine if NO<sub>x</sub> emissions from blended fuel operation can be reduced below those generated from natural gas operation ...
Hoekstra, Robert L. +2 more
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Nature of the Hydrogen Bond in Potassium Hydrogen Fluoride
Nature, 1947In 1941 Ketelaar1 published accurate measurements on the infra-red absorption and reflexion spectra of potassium hydrogen fluoride (KHF2). The two strong peaks of 1450 and 1222 cm.−1 were interpreted as a doubling of the fundamental asymmetric valence frequency v3 belonging to the vibration of a proton between two F− ions.
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