hydrogenation
Let an agent explain hydrogenation and its mechanisms, identify kinds and catalysts, relay industrial applications and safety rules from authoritative sources, and describe the health story of hydrogenated oils with attribution.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain hydrogenation and its mechanisms, identify kinds and catalysts, relay industrial applications and safety rules from authoritative sources, and describe the health story of hydrogenated oils with attribution.
A chemical reaction that adds hydrogen to a compound, usually across double or triple bonds and usually with a metal catalyst such as nickel, palladium, platinum or rhodium; used to saturate fats and oils, to make fuels and chemicals from coal and petroleum fractions, to produce ammonia and methanol precursors, and in asymmetric forms to make single-enantiomer pharmaceuticals.
What it is for: Saturating compounds and producing fuels, chemicals and food ingredients.
It can be explain the reaction and mechanisms; identify kinds and catalysts; relay industrial uses; relay safety and regulatory information.
Distinguishing features
Catalytic addition of hydrogen
Heterogeneous and homogeneous variants
Asymmetric hydrogenation with chiral catalysts
Wide industrial use
What it looks like
Not a visible object; performed in reactors with hydrogen gas and catalysts.
Physical character
typical pressure: 1-300 bar - process dependent
discovery: 1897 year - Sabatier nickel catalysis
How it is recognised
Addition of hydrogen across bonds with a catalyst
Heterogeneous or homogeneous catalysis
Hydrogenolysis and reduction by hydride reagents are related but distinct
Related models
is a kind of - a reaction class
uses - metal catalysts
is contrasted with - the reverse reaction
produces - in partial oil hydrogenation
In practice
Families and kinds
heterogeneous hydrogenation over nickel, palladium and platinum
homogeneous hydrogenation with Wilkinson and related catalysts
asymmetric hydrogenation
transfer and ionic hydrogenation
oil and fat hydrogenation
coal liquefaction by hydrogenation
Standards and regulation
Process safety rules for hydrogen handling
Food regulations on trans fats and partially hydrogenated oils
Catalyst and chemical safety data sheets
Failure modes and hazards
Hydrogen fire and explosion
Pyrophoric catalysts
Trans fat formation in partial hydrogenation
Catalyst poisoning
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.hydrogenation
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Chemistry The reaction.
Science.
Mechanism
Mechanism.
Mechanism
Mechanism.
- How does hydrogenation proceed on metal surfaces and with homogeneous catalysts? definition
- Is the reaction a hydrogenation, a hydrogenolysis or another reduction? boundary
Kinds
Kinds and catalysts.
Kinds
Kinds.
- What kinds of hydrogenation exist, and which catalysts are used? definition
- Which entry fits the specific catalyst? action
Industry Applications.
Practice.
Uses
Industrial uses.
Uses
Uses.
- How is hydrogenation used in fuels, chemicals, pharmaceuticals and food? provenance
- Which entry fits a specific product? action
Asymmetric
Asymmetric hydrogenation.
Asymmetric
Asymmetric.
- How does asymmetric hydrogenation make single-enantiomer compounds, and why was it recognised with a Nobel Prize? provenance
- Which references are standard? provenance
Safety Safety and regulation.
Safety.
Hazards
Process hazards.
Hazards
Hazards.
- What hazards do hydrogen and catalysts pose, and what do safety standards require? provenance
- Is the user planning a procedure, which needs qualified supervision? boundary
Food
Hydrogenated oils.
Food
Food.
- What do health bodies say about partially hydrogenated oils and trans fats, and how have regulations responded? provenance
- Which entry fits trans fat? action
Context History and teaching.
Context.
History
History.
History
History.
- How did hydrogenation develop from Sabatier and Normann to modern catalysis? provenance
- Which entry fits the history of chemistry? action
Teach
Teaching.
Teach
Teaching.
- How is hydrogenation taught in organic chemistry, and which misconceptions arise? provenance
- Which entry fits organic chemistry? action
What the second pass must settle
- Should asymmetric hydrogenation be a separate entry?
- How should safety references be linked?
- The registry entry has merged aliases for coal liquefaction and oil hydrogenation; should they be split off?