Mechanisms and kinetics of aqueous formic acid and formate ion dehydrogenation on platinum and subsequent reaction of adsorbed hydrogen

The kinetics of the oxidation of gaseous acetaldehyde have been investigated from 60° to 120 °C. by observing the rate of pressure decrease in a system at constant volume. A considerable induction period exists, during which the main products of the reaction are carbon dioxide, water, and formic acid. The main reaction in the subsequent stages involves the formation of peroxides and their oxidation products. The heat of activation of the reaction is 8700 calories per gram molecule. The indications are that the reactions occurring during the induction period are heterogeneous. The subsequent reaction occurs by a chain mechanism. The chains are initiated at the walls of the reaction vessel, and are also largely broken at the walls.

Download Full-text

Kinetics of mild steel corrosion in aqueous formic acid solutions

Canadian Metallurgical Quarterly ◽

10.1179/000844311x12949307643515 ◽

2011 ◽

Vol 50 (2) ◽

pp. 186-194 ◽

Cited By ~ 2

Author(s):

S K Singh ◽

A K Mukherjee ◽

M M Singh

Keyword(s):

Mild Steel ◽

Formic Acid ◽

Steel Corrosion ◽

Acid Solutions ◽

Mild Steel Corrosion ◽

Kinetics Of ◽

Aqueous Formic Acid

Download Full-text

Kinetics of Reductive Dissolution of Manganese Dioxide in Aqueous Formic Acid at 298 K

Journal of Colloid Science and Biotechnology ◽

10.1166/jcsb.2014.1097 ◽

2014 ◽

Vol 3 (3) ◽

pp. 279-282 ◽

Cited By ~ 9

Author(s):

Md. Aminul Islam ◽

M. Muhibur Rahman

Keyword(s):

Formic Acid ◽

Manganese Dioxide ◽

Reductive Dissolution ◽

Kinetics Of ◽

Aqueous Formic Acid

Download Full-text

Kinetics of carbon monoxide methanation on a Ni/SiO2 catalyst

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19901678 ◽

1990 ◽

Vol 55 (7) ◽

pp. 1678-1685

Author(s):

Vladimír Stuchlý ◽

Karel Klusáček

Keyword(s):

Carbon Monoxide ◽

Reaction Rate ◽

Catalyst Activity ◽

Adsorbed Hydrogen ◽

Reaction Products ◽

Co Methanation ◽

Molar Ratios ◽

Rate Determining Step ◽

Higher Temperature ◽

Kinetics Of

Kinetics of CO methanation on a commercial Ni/SiO2 catalyst was evaluated at atmospheric pressure, between 528 and 550 K and for hydrogen to carbon monoxide molar ratios ranging from 3 : 1 to 200 : 1. The effect of reaction products on the reaction rate was also examined. Below 550 K, only methane was selectively formed. Above this temperature, the formation of carbon dioxide was also observed. The experimental data could be described by two modified Langmuir-Hinshelwood kinetic models, based on hydrogenation of surface CO by molecularly or by dissociatively adsorbed hydrogen in the rate-determining step. Water reversibly lowered catalyst activity and its effect was more pronounced at higher temperature.

Download Full-text