CLVI.—The dual theory of acid catalysis. The catalytic activity of monochloroacetic acid in presence of its salts

1915 ◽  
Vol 107 (0) ◽  
pp. 1426-1437 ◽  
Author(s):  
Harry Medforth Dawson ◽  
Clarence Kenworthy Reiman
Keyword(s):  
Catalytic Activity ◽  
Acid Catalysis ◽  
Monochloroacetic Acid ◽  
Dual Theory

Hydrazone-based covalent organic frameworks for Lewis acid catalysis

2018 ◽  
Vol 47 (39) ◽  
pp. 13824-13829 ◽  
Author(s):  
Tanay Kundu ◽  
Jian Wang ◽  
Youdong Cheng ◽  
Yonghua Du ◽  
Yuhong Qian ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Lewis Acid ◽  
Acid Catalysis ◽  
Covalent Organic Frameworks ◽  
Lewis Acid Catalysis

Two new hydroxy-rich hydrazone COFs are synthesized and postsynthetically incorporated with CoII to exhibit Lewis acid catalytic activity in cyanosilylation reactions of various aldehydes.

Characterization and Acid Catalytic Properties of NiO Supported on ZrO2 and Modified with MoO3

2007 ◽  
Vol 124-126 ◽  
pp. 1797-1800 ◽  
Author(s):  
Jong Rack Sohn ◽  
Dong Cheol Shin
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Acid Catalysis ◽  
Catalytic Properties ◽  
Orthorhombic Phase ◽  
Acid Strength ◽  
Two Dimensional ◽  
Ammonium Heptamolybdate ◽  
Cumene Dealkylation

Nickel oxide supported on zirconia and modified with MoO3 for acid catalysis was prepared by drying powdered Ni(OH)2-Zr(OH)4 with ammonium heptamolybdate aqueous solution, followed by calcining in air at high temperature. The characterization of prepared catalysts was performed using FTIR, Raman, XRD, and DSC. MoO3 equal to or less than 15 wt% was dispersed on the surface of catalyst as two-dimensional polymolybdate or monomolybdate, while for MoO3 above 15 wt%, crystalline orthorhombic phase of MoO3 was formed. The high acid strength and acidity were responsible for the Mo=O bond nature of the complex formed by the interaction between MoO3 and ZrO2. The catalytic activity for cumene dealkylation was correlated with the acidity of the catalyst measured by the ammonia chemisorption method

Light-enhanced acid catalysis over a metal–organic framework

2018 ◽  
Vol 54 (20) ◽  
pp. 2498-2501 ◽  
Author(s):  
Caiyun Xu ◽  
Keju Sun ◽  
Yu-Xiao Zhou ◽  
Xiao Ma ◽  
Hai-Long Jiang
Keyword(s):  
Catalytic Activity ◽  
Acid Catalysis ◽  
Metal Organic Framework ◽  
Light Irradiation ◽  
Sulfonate Group ◽  
Metal Organic ◽  
Organic Framework

A sulfonate group-functionalized metal–organic framework exhibits unprecedented light-enhanced catalytic activity, even higher than H2SO4, and excellent recyclability toward acid-engaged reactions under light irradiation.

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