Gas Phase Hydrolysis of Formaldehyde To Form Methanediol: Impact of Formic Acid Catalysis

2013 ◽  
Vol 117 (46) ◽  
pp. 11704-11710 ◽  
Author(s):  
Montu K. Hazra ◽  
Joseph S. Francisco ◽  
Amitabha Sinha
Keyword(s):  
Formic Acid ◽  
Gas Phase ◽  
Acid Catalysis ◽  
Hydrolysis Of

Acid-catalyzed Solvolysis of Isonitriles. I

1971 ◽  
Vol 49 (14) ◽  
pp. 2455-2459 ◽  
Author(s):  
Y. Y. Lim ◽  
A. R. Stein
Keyword(s):  
Formic Acid ◽  
Acid Catalysis ◽  
Hydrolysis Product ◽  
Rate Dependence ◽  
Linear Rate ◽  
First Order ◽  
Methyl Amine ◽  
Acid Catalyzed ◽  
Pseudo First Order ◽  
Hydrolysis Of

The acid-catalyzed hydrolysis of methyl isonitrile has been examined. The initial hydrolysis product is N-methylformamide which is further hydrolyzed to methyl amine and formic acid at a much slower rate. The hydrolysis to N-methylformamide is pseudo-first order in methyl isonitrile and shows a linear rate dependence on concentration of general (buffer) acid at fixed pH. The significance of general acid-catalysis in terms of the mechanism of the hydrolysis is considered and taken as evidence for carbon protonation rather than nitrogen protonation as the initiating step.

Hydrolysis of Ketene Catalyzed by Formic Acid: Modification of Reaction Mechanism, Energetics, and Kinetics with Organic Acid Catalysis

2015 ◽  
Vol 119 (19) ◽  
pp. 4347-4357 ◽  
Author(s):  
Matthew K. Louie ◽  
Joseph S. Francisco ◽  
Marco Verdicchio ◽  
Stephen J. Klippenstein ◽  
Amitabha Sinha
Keyword(s):  
Reaction Mechanism ◽  
Formic Acid ◽  
Organic Acid ◽  
Acid Catalysis ◽  
Acid Modification ◽  
Hydrolysis Of

scholarly journals UV-A light-assisted gas-phase formic acid decomposition on photo-thermo Ru/TiO2 catalyst

2021 ◽  
Author(s):  
Javier Ivanez ◽  
Patricia Garcia-Munoz ◽  
Agnieszka M. Ruppert ◽  
Nicolas Keller
Keyword(s):  
Formic Acid ◽  
Gas Phase ◽  
Acid Decomposition ◽  
Tio2 Catalyst ◽  
Formic Acid Decomposition

Nonenzymatic Hydrolysis of Cocainevia Intramolecular Acid Catalysis

1999 ◽  
Vol 82 (1) ◽  
pp. 85-89 ◽  
Author(s):  
Pan Li ◽  
Kang Zhao ◽  
Shixian Deng ◽  
Donald W. Landry
Keyword(s):  
Acid Catalysis ◽  
Hydrolysis Of

Effect of Reactor Shape and Gas Mixing on Gas Phase Production of Fine SiO2 Particles by Hydrolysis of Tetramethoxysilane

2008 ◽  
Vol 34 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Toshinori Kojima ◽  
Kengo Tachi ◽  
Jun-ichi Sakai ◽  
Shigeru Kato ◽  
Shigeo Satokawa
Keyword(s):  
Gas Phase ◽  
Gas Mixing ◽  
Sio2 Particles ◽  
Hydrolysis Of ◽  
Phase Production

scholarly journals High Pressure Photoreduction of CO2: Effect of Catalyst Formulation, Hole Scavenger Addition and Operating Conditions

Catalysts ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 430 ◽  
Author(s):  
Elnaz Bahadori ◽  
Antonio Tripodi ◽  
Alberto Villa ◽  
Carlo Pirola ◽  
Laura Prati ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Formic Acid ◽  
Gas Phase ◽  
Operating Conditions ◽  
Flame Spray ◽  
Co2 Solubility ◽  
Total Consumption ◽  
Solubility In Water ◽  
Hole Scavenger ◽  
Fuels And Chemicals

The photoreduction of CO2 is an intriguing process which allows the synthesis of fuels and chemicals. One of the limitations for CO2 photoreduction in the liquid phase is its low solubility in water. This point has been here addressed by designing a fully innovative pressurized photoreactor, allowing operation up to 20 bar and applied to improve the productivity of this very challenging process. The photoreduction of CO2 in the liquid phase was performed using commercial TiO2 (Evonink P25), TiO2 obtained by flame spray pyrolysis (FSP) and gold doped P25 (0.2 wt% Au-P25) in the presence of Na2SO3 as hole scavenger (HS). The different reaction parameters (catalyst concentration, pH and amount of HS) have been addressed. The products in liquid phase were mainly formic acid and formaldehyde. Moreover, for longer reaction time and with total consumption of HS, gas phase products formed (H2 and CO) after accumulation of significant number of organic compounds in the liquid phase, due to their consecutive photoreforming. Enhanced CO2 solubility in water was achieved by adding a base (pH = 12–14). In basic environment, CO2 formed carbonates which further reduced to formaldehyde and formic acid and consequently formed CO/CO2 + H2 in the gas phase through photoreforming. The deposition of small Au nanoparticles (3–5 nm) (NPs) onto TiO2 was found to quantitatively influence the products distribution and increase the selectivity towards gas phase products. Significant energy storage in form of different products has been achieved with respect to literature results.

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