Kinetics of De-Esterification for Synthesis of Benzoic Acid
GROUP 2
Kinetics of De-esterification for Synthesis of Benzoic Acid
BATCH REACTOR
Shane Bulk
Chris Crosley
David McGuire
Max Skula
Yunjing Song
Shriram Sundarraj
Nelson Zhou
155:416 Process Laboratory II
Professor Jerry Sheinbeim
January 28 – February 28, 2014
ABSTRACT
The observed reaction that took place in this experiment was the de-esterification of ethyl benzoate to form benzoic acid. This experiment was used to determine the rate constant k of the synthesis of benzoic acid at different temperatures and ethanol concentrations. The reaction was carried out in a batch reactor, where ethyl benzoate was added to a mixture of water, ethanol, and sodium hydroxide. The agitation speed of the batch reactor was kept set at 250 rpm and the temperature was varied between 40°C and 45°C. The ethanol concentrations used for this experiment were 0.25M and 0.35M. The concentration of the samples were found by using a
Titroprocessor. The results from the Titroprocessor were then analyzed to determine the value of the rate constant. The rate constant determined for the 0.25 and 0.35 mole fraction of ethanol at
40 °C were 0.5433 L/(mol*s) and 0.2012 L/(mol*s) respectively. While the rate constant determined for the 0.25 and 0.35 mole fraction of ethanol at 45 °C were 0.6857 L/(mol*s) and
0.4976 L/(mol*s) respectively.
-1-
1. INTRODUCTION
1.1
Background
The batch reactor is one of the four main types of kinetic reactors along with plug-flow reactor, continuous-stirred tank reactor and packed-bed reactor. The difference of the batch reactor is there is no flow into or out of the reactor. When using the batch reactor, two assumptions are generally made: the solution inside the reactor is well-mixed all around and the system operates at unsteady-state, meaning there is accumulation within the system [2].The batch reactor has multiple uses in the field of chemical engineering such as small-scale operations, testing new processes,
Kinetics of De-esterification for Synthesis of Benzoic Acid
BATCH REACTOR
Shane Bulk
Chris Crosley
David McGuire
Max Skula
Yunjing Song
Shriram Sundarraj
Nelson Zhou
155:416 Process Laboratory II
Professor Jerry Sheinbeim
January 28 – February 28, 2014
ABSTRACT
The observed reaction that took place in this experiment was the de-esterification of ethyl benzoate to form benzoic acid. This experiment was used to determine the rate constant k of the synthesis of benzoic acid at different temperatures and ethanol concentrations. The reaction was carried out in a batch reactor, where ethyl benzoate was added to a mixture of water, ethanol, and sodium hydroxide. The agitation speed of the batch reactor was kept set at 250 rpm and the temperature was varied between 40°C and 45°C. The ethanol concentrations used for this experiment were 0.25M and 0.35M. The concentration of the samples were found by using a
Titroprocessor. The results from the Titroprocessor were then analyzed to determine the value of the rate constant. The rate constant determined for the 0.25 and 0.35 mole fraction of ethanol at
40 °C were 0.5433 L/(mol*s) and 0.2012 L/(mol*s) respectively. While the rate constant determined for the 0.25 and 0.35 mole fraction of ethanol at 45 °C were 0.6857 L/(mol*s) and
0.4976 L/(mol*s) respectively.
-1-
1. INTRODUCTION
1.1
Background
The batch reactor is one of the four main types of kinetic reactors along with plug-flow reactor, continuous-stirred tank reactor and packed-bed reactor. The difference of the batch reactor is there is no flow into or out of the reactor. When using the batch reactor, two assumptions are generally made: the solution inside the reactor is well-mixed all around and the system operates at unsteady-state, meaning there is accumulation within the system [2].The batch reactor has multiple uses in the field of chemical engineering such as small-scale operations, testing new processes,
References: Fogler, H. Scott. Elements of Chemical Reaction Engineering. Prentice Hall 4th Edition., 2006