History of Hydrogen

2. Hydrogen is the chemical element with the symbol H and atomic number 1.
Hydrogen is the lightest element. At standard conditions hydrogen is a gas of
diatomic molecules having the formula H2. It is colorless, odorless, tasteless, non-
toxic, and highly combustible. Hydrogen is the most abundant chemical substance
in the universe, constituting roughly 75% of all normal matter. Stars such as the
Sun are mainly composed of hydrogen in the plasma state. Most of the hydrogen
on Earth exists in molecular forms such as water and organic compounds. For the
most common isotope of hydrogen (symbol 1H) each atom has one proton, one
electron, and no neutrons.
hydrogen is the most abundant element in the universe. ... hyrogen is projected to
be the future fuel of the world with new fuel cells being created for vehicles
INTRODUCTION

3. HISTORY OF HYDROGEN
Discovery and use Main article: Timeline of
hydrogen technologies In 1671, Robert Boyle
discovered and described the reaction between
iron filings and dilute acids, which results in the
production of hydrogen gas. In 1766, Henry
Cavendish was the first to recognize hydrogen
gas as a discrete substance, by naming the gas
from a metal-acid reaction "inflammable air". He
speculated that "inflammable air" was in fact
identical to the hypothetical substance called
"phlogiston“ and further finding in 1781 that the
gas produces water when burned. He is usually
given credit for the discovery of hydrogen as an
element.In 1783, Antoine Lavoisier gave the
element the name hydrogen (from the Greek
ὑδρο- hydro meaning "water" and -γενής genes
meaning "former"), when he and Laplace
reproduced Cavendish's finding that water is
produced when hydrogen is burned.

4. FUTURE OF HYDROGEN
It is seen by many as the clean energy of the future. Billions of dollars from the bipartisan
infrastructure bill have been teed up to fund it. But a new peer-reviewed study on the
climate effects of hydrogen, the most abundant substance in the universe, casts doubt on its
role in tackling the greenhouse gas emissions that are the driver of catastrophic global
warming. The main stumbling block: Most hydrogen used today is extracted from natural
gas in a process that requires a lot of energy and emits vast amounts of carbon dioxide.
Producing natural gas also releases methane, a particularly potent greenhouse gas. And
while the natural gas industry has proposed capturing that carbon dioxide — creating what it
promotes as emissions-free, “blue” hydrogen — even that fuel still emits more across its
entire supply chain than simply burning natural gas, according to the paper, published
Thursday in the Energy Science & Engineering journal by researchers from Cornell and
Stanford universities. “To call it a zero-emissions fuel is totally wrong,” said Robert Howarth,
a biogeochemist and ecosystem scientist at Cornell and the study’s lead author. “What we
found is that it’s not even a low-emissions fuel, either.”

6. FUEL CELL
What is hydrogen? What is a fuel cell?
An electrochemical device that
combines hydrogen and oxygen to
produce electricity, with water and heat
as its by-product It is clean, quiet and
highly efficient two to three times more
efficient than fuel burning. The most
abundant element in the universe. A
universal fuel that can be used to power
anything from cars to cell phones, Non-
toxic, lighter than air, colorless,
odorless, tasteless. Hydrogen is the
most abundant element in the universe.
Hyrogen is projected to be the future
fuel of the world with new fuel cells
being created for vehicles.

8. Picture Of Hydrogen Atom
HYDROGEN FUEL CELL :
Fuel cell works on the
principle of reverse
electrolysis • It operates
similarly to a battery, but it
does not run down nor does it
require recharging • As long
as fuel is supplied, a Fuel Cell
will produce energy.

9. FIRST IMAGE EVER TAKEN OF HYDROGEN ATOM

10. APPLICATIONS
Petrochemical industry Large quantities of H2 are used in the "upgrading" of fossil
fuels. Key consumers of H2 include hydrodealkylation, hydrodesulfurization, and
hydrocracking. Many of these reactions can be classified as hydrogenolysis, i.e.,
the cleavage of bonds to carbon. Illustrative is the separation of sulfur from liquid
fossil fuels:
R-S-R + 2 H2 → H2S + 2 RH

11. INTERESTING FACTS
INTERESTING FACTS: HYRDOGEN IS ESTIMATED THE COMPRISE 90 OF ALL
ATOMS, NEARLY 75 OF THE MASS OF THE UNIVERSE.HYDROGEN IS FOUND
IN STARS AND PLAYS A MAJOR ROLE IN POWERING THE
UNIVERSE.HYDROGEN IS A PRIMARY COMPONENT OF JUPITER AND
OTHER GAS PLANETS.
Hydrogen is the most abundant element in the universe. Hyrogen is
projected to be the future fuel of the world with new fuel cells being created
for vehicles.

12. WARNING
HYDROGEN GAS IS EXTREMELY FLAMMABLE AND WILL BURN IN
CONCENTRATIONS AS LOW AS 4 H2 IN AIR

13. SAFETY AND PRECAUTIONS
Main article: Hydrogen safety Hydrogen Hazards GHS labelling: Pictograms
GHS02: Flammable Signal word, Danger Hazard statements: H220 Precautionary
statements P202, P210, P271, P377, P381, P403 NFPA 704 (fire diamond) NFPA
704 four-colored diamond040Hydrogen poses a number of hazards to human
safety, from potential detonations and fires when mixed with air to being an
asphyxiant in its pure, oxygen-free form. In addition, liquid hydrogen is a cryogen
and presents dangers (such as frostbite) associated with very cold liquids.
Hydrogen dissolves in many metals and in addition to leaking out, may have
adverse effects on them, such as hydrogen embrittlement, leading to cracks and
explosions. Hydrogen gas leaking into external air may spontaneously ignite.
Moreover, hydrogen fire, while being extremely hot, is almost invisible, and thus
can lead to accidental burns.

14. REFERENCES
• https://www.icheme.org/media/14231/hydrogen-the-future-fuel.pdf
• https://www.ghd.com/en/perspectives/the-future-of-hydrogen-fuels-a-potential-game-changer.aspx
• https://www.iea.org/reports/the-future-of-hydrogen
• https://www.sciencedirect.com/science/article/pii/S2352146519302315
• https://image1.slideserve.com/3090846/hydrogen-fuel-of-the-future-n.jpg
• https://images-of-elements.com/hydrogen-2.jpg
• https://pedfire.com/for-many-hydrogen-is-the-fuel-of-the-future-new-research-raises-doubts/
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