of Determination Kinetic Parameters for Saponification Reaction
Arta Pecaj (Team Leader) Becky Solano (Operations Manager) James Huynh (Safety Coordinator)
(with acknowledgements to: Dr. David Hackleman, Dr. Alex Yokochi, Kevin Harris, and Ken Creamer)
February 2, 2004
Presentation Overview
Project Objectives Project Planning and Execution Background and Experimental Methods Results and Conclusions Recommendation for Future Work
Project Objective
Project engineers requested kinetic parameters for a specific saponification reaction based on experimental data Values found will be compared to the reported literature values Conducted experiments in batch and plug flow regimes
Project Planning and Execution
Action Plan: Setup through finish
Generated conductivity calibration curves Conducted batch reaction experimentation Generated pump calibration curves Mixed solutions Conducted plug flow reaction experimentation
Project Planning and Execution (con't.)
Roles and responsibilities: - Team leader: overall coordination - Operation manager: prepare operation manual and contribute to experimental design - Safety Coordinator: Prepare safety report and contribute to experimental setup
Project Planning and Execution (con't.)
Safety: Located MSDS and other safety equipment Used gloves with caustic, eye protection and lab coats Mixed ethyl acetate solutions under the fume hood Experimental Work: Monitored solution conductivity to track the extent of the reaction Two batch experiments using stirred flask Two plug flow experiments Experiments were carried at 1:1 and 1:10 reactant mole ratios for batch and 1:1 and 1:3 for plug flow
Project Planning and Execution (con't.)
Analysis: Tabulated data Prepared graphs Analyzed kinetic reaction values Assembled reports and presentation
Background and Experimental Methods
I. Chemical reaction: NaOH + EtOAcNaOAc + EtOH II. Process Equipment : (a) Batch reactor schematic:
Overview: Two experiments using 1:1 and 1:10 mole ratio of sodium hydroxide and ethyl acetate respectively
Background and Experimental Methods (con't.)
II. Process Equipment (b) Plug flow reactor schematic:
Background and Experimental Methods (con't.)
II. Process Equipment PLUG FLOW REACTOR Overview: two batch experiments were conducted one at 1:1 and 1:3 mole ratio of sodium hydroxide and ethyl acetate respectively
Background and Experimental Methods (con't.)
Key
equations:
C - C CA -CA = C 0 -C CA0 -CA C 0 -C =X C 0 - C X = CA * k * t 1- X
Results and Conclusions (con't.)
Fig
1.1: Sodium Hydroxide Conductivity Calibration Graphs
Sodium Hydroxide Calibration Curve
Conductivity 15 (mS/m)
20 10 5 0 0 0.02 0.04 0.06 0.08 0.1
Concentration of NaOH (mol/L)
y = 215.25x + 0.4375 2 R = 0.994
Results and Conclusions (con't.)
Fig
1.2 Sodium Acetate Conductivity Calibration curve
Conductivity calibration curve for sodium acetate
Conductivity of sodium acetate (mS/m)
10 8 6 4 2 0 0 0.05
y = 67.578x + 0.4257 R2 = 0.9976
0.1
0.15
concentration of sodium acetate (m ol/L)
Results and Conclusions (con't.)
Pump # 1 Calibration Data
Table 1.3
Time (s)
Volume (ml)
41 50 33 25.5 31 40
Setting (%)
100 100 60 60 80 80
Volumetric flowrate (ml/s)
3.25 3.27 2.26 2.11 2.54 2.57
12.6 15.3 14.6 12.06 12.22 15.57
Results and Conclusions (con't.)
Pump # 1 Calibration Curve Fig 1.3
Pump # 1 Calibration Curve
3.50 3.00 2.50 2.00 1.50 1.00 0.50 0.00 0 20 40 60
Percent Setting (%)
Volumetric Flowrate (ml/s)
y = 0.0268x + 0.5198 2 R = 0.9582
80
100
120
Results and Conclusions (con't.)
Pump
# 2 Calibration Data
Volume (ml)
44 43 20 31 34 32
Time (s)
Setting (%)
100 100 50 50 80 80
Volumetric flowrate (ml/s)
3.37 3.32 1.65 1.71 2.78 2.72
13.06 12.97 12.15 18.15 12.25 11.78
Results and Conclusions (con't.)
Pump # 2 Calibration Curve
Fig 1.4
Pum p # 2 Calibration Curve Volumetric Flowrate (ml/s)
4.00 3.00 2.00 1.00 0.00 0 50
Percentage Setting (%) y = 0.0335x + 0.0211 R2 = 0.996
100
150
Results and Conclusions (con't.)
Fractional Conversion vs. time graph for equimolar reactant concentration (slope = rate constant (k))
Figure 1.5
Fractional Conversion vs tim e
8.00 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 0 50 100
Fracti...