acid-base catalysis

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acid-base catalysis

[′as·əd ′bās kə′tal·ə·sis]
(chemistry)
The increase in speed of certain chemical reactions due to the presence of acids and bases.
References in periodicals archive ?
Tenn said that nylon-1,6 can be prepared directly from adiponitrile, water and formaldehyde using acid catalysis, and that the synthesis can be performed at room temperature in open beakers.
Ionic liquids have strong acid properties, enabling them to perform acid catalysis, but without the volatility of conventional acids.
After an introduction to catalysis as a whole, he covers acid catalysis, oxidation catalysis, polymerization catalysis, and reduction/hydrogenation catalysis--the major catalytic reaction types of commercial importance.
Processes of refinement, pyrolysis, pretreatment, acid catalysis, depolymerization, hydrotreatment, enzyme catalysis, steam reforming, metabolic engineering, and photocatalytic hydrogen production are covered.
Acid catalysis has its own draw backs; higher reaction temperatures (60-70oC) and longer reaction time (8-20hr) are needed to achieve reasonable yields.
in Japan, have edited the 19 articles of this resource, which present the latest research and methodology for acid catalysis.
However, Chang and Karalis (10) reported that the proton from the dissociation of the adipic acid played a very important role in the catalyzed reaction along with the external catalyst, and the reaction rate of the catalyzed polyesterification must be affected by the combination of the adipic acid catalysis and the external catalysis.
2) it had been demonstrated that zinc oxide and stearic acid or zinc stearate would be required to generate the Lewis acid catalysis that would initiate the alkylation reaction.
Brnsted acid catalysis is well established in organic synthesis.
Finally applications of iron-containing complexes to specific chemical transformations are discussed, including reductions, asymmetric synthesis, Lewis acid catalysis, C-C bond formation with C-H bond activation, and cross-coupling.