Difference between revisions of "Hydrolysis"

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(→‎Acid: expanding the page and added citations)
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'''Hydrolysis''' (/haɪˈdrɒlɪsɪs/; from Ancient Greek ''hydro-'' 'water', and ''lysis'' 'to unbind') is a chemical reaction in which a molecule of water breaks one or more chemical bonds. The term is used broadly for substitution, elimination, and solvation reactions in which water is the nucleophile.<ref>{{Cite web|year=2002|title=Hydrolysis|e-pub date=2002|date accessed=2021|url=https://en.wikipedia.org/wiki/Hydrolysis}}</ref>


== Feedstock ==
== Feedstock ==
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=== Acid ===
=== Acid ===
In organic chemistry, '''acid hydrolysis''' is a hydrolysis process in which a protic acid is used to catalyze the cleavage of a chemical bond via a nucleophilic substitution reaction, with the addition of the elements of water (H<sub>2</sub>O).
'''Acid hydrolysis''' is a hydrolysis process in which a protic acid is used to catalyze the hydrolysis reaction. Dilute or concentrated acids help to break down the cellulose and hemicellulose into individual sugars.<ref>{{Cite journal|title=Dilute acid hydrolysis of lignocellulosic biomass|year=2010-01-15|author=P. Lenihan, A. Orozco, E. O’Neill, M.N.M. Ahmad, D.W. Rooney, G.M. Walker|journal=Chemical Engineering Journal|volume=156|issue=2|page=395–403|doi=10.1016/j.cej.2009.10.061}}</ref>


=== Alkali ===
=== Alkali ===
'''Alkaline hydrolysis''', in organic chemistry, usually refers to types of nucleophilic substitution reactions in which the attacking nucleophile is a hydroxide ion.
'''Alkaline hydrolysis''' refers to types of nucleophilic substitution reactions in which the attacking nucleophile is a hydroxide ion.


=== Salt ===
=== Salt ===

Revision as of 12:08, 13 August 2021

Hydrolysis (/haɪˈdrɒlɪsɪs/; from Ancient Greek hydro- 'water', and lysis 'to unbind') is a chemical reaction in which a molecule of water breaks one or more chemical bonds. The term is used broadly for substitution, elimination, and solvation reactions in which water is the nucleophile.[1]

Feedstock

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Process and technologies

Acid

Acid hydrolysis is a hydrolysis process in which a protic acid is used to catalyze the hydrolysis reaction. Dilute or concentrated acids help to break down the cellulose and hemicellulose into individual sugars.[2]

Alkali

Alkaline hydrolysis refers to types of nucleophilic substitution reactions in which the attacking nucleophile is a hydroxide ion.

Salt

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Ionic liquids

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Sulphite salt

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Solvent

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Organosolv

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Product

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Technology providers

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Patents

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References

  1. , 2002: Hydrolysis 2002, Last access 2021. https://en.wikipedia.org/wiki/Hydrolysis
  2. P. Lenihan, A. Orozco, E. O’Neill, M.N.M. Ahmad, D.W. Rooney, G.M. Walker, 2010-01-15: Dilute acid hydrolysis of lignocellulosic biomass. Chemical Engineering Journal, Vol. 156, (2), 395–403. doi: https://doi.org/10.1016/j.cej.2009.10.061